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  1. Article: Experimental study of exclusive 2H(e,e'p)n reaction mechanisms at high Q2.

    Egiyan, K S / Asryan, G / Gevorgyan, N / Griffioen, K A / Laget, J M / Kuhn, S E / Adams, G / Amaryan, M J / Ambrozewicz, P / Anghinolfi, M / Audit, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P / Baltzell, N A / Barrow, S / Batourine, V / Battaglieri, M /
    Bedlinskiy, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Blaszczyk, L / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Cazes, A / Chen, S / Cole, P L / Collins, P / Coltharp, P / Cords, D / Corvisiero, P / Crabb, D / Crede, V / Cummings, J P / Dashyan, N / De Masi, R / De Vita, R / De Sanctis, E / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dharmawardane, K V / Dickson, R / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / El Fassi, L / Elouadrhiri, L / Eugenio, P / Fatemi, R / Fedotov, G / Feldman, G / Feuerbach, R J / Fersch, R / Garçon, M / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gonenc, A / Gordon, C I O / Gothe, R W / Guidal, M / Guillo, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hafidi, K / Hakobyan, H / Hakobyan, R S / Hanretty, C / Hardie, J / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Isupov, E L / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Juengst, H G / Kalantarians, N / Kellie, J D / Khandaker, M / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Kossov, M / Krahn, Z / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuleshov, S V / Lachniet, J / Langheinrich, J / Lawrence, D / Li, Ji / Livingston, K / Lu, H Y / Maccormick, M / Marchand, C / Markov, N / Mattione, P / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mehrabyan, S / Melone, J J / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Moriya, K / Morrow, S A / Moteabbed, M / Mueller, J / Munevar, E / Mutchler, G S / Nadel-Turonski, P / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M R / Niyazov, R A / Nozar, M / O'Rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Paterson, C / Anefalos Pereira, S / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Rossi, P / Sabatié, F / Salamanca, J / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Shvedunov, N V / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Sokhan, D / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Stoler, P / Strauch, S / Taiuti, M / Tedeschi, D J / Thoma, U / Tkabladze, A / Tkachenko, S / Todor, L / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Watts, D P / Weinstein, L B / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Zana, L / Zhang, J / Zhao, B / Zhao, Z W

    Physical review letters

    2007  Volume 98, Issue 26, Page(s) 262502

    Abstract: The reaction 2H(e,e'p)n has been studied with full kinematic coverage for photon virtuality 1.75

    Abstract The reaction 2H(e,e'p)n has been studied with full kinematic coverage for photon virtuality 1.75<Q2<5.5 GeV2. Comparisons of experimental data with theory indicate that for very low values of neutron recoil momentum (p(n)<100 MeV/c) the neutron is primarily a spectator and the reaction can be described by the plane-wave impulse approximation. For 100<p(n)<750 MeV/c, proton-neutron rescattering dominates the cross section, while Delta production followed by the NDelta-->NN transition is the primary contribution at higher momenta.
    Language English
    Publishing date 2007-06-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.98.262502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Search for medium modifications of the rho meson.

    Nasseripour, R / Wood, M H / Djalali, C / Weygand, D P / Tur, C / Mosel, U / Muehlich, P / Adams, G / Amaryan, M J / Ambrozewicz, P / Anghinolfi, M / Asryan, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P / Baltzell, N A / Barrow, S / Battaglieri, M /
    Bedlinskiy, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Blaszczyk, L / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Carnahan, B / Casey, L / Chen, S / Cole, P L / Collins, P / Coltharp, P / Crabb, D / Crannell, H / Crede, V / Cummings, J P / Dashyan, N / De Masi, R / De Vita, R / De Sanctis, E / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dharmawardane, K V / Dickson, R / Dodge, G E / Doughty, D / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / El Fassi, L / Elouadrhiri, L / Eugenio, P / Fedotov, G / Feldman, G / Feuerbach, R J / Funsten, H / Garçon, M / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gordon, C I O / Gothe, R W / Griffioen, K A / Guidal, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hafidi, K / Hakobyan, H / Hakobyan, R S / Hanretty, C / Hardie, J / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Isupov, E L / Ito, M M / Jenkins, D / Jo, H S / Johnstone, J R / Joo, K / Juengst, H G / Kalantarians, N / Kellie, J D / Khandaker, M / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Kossov, M / Krahn, Z / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Kuleshov, S V / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Li, Ji / Livingston, K / Lu, H Y / Maccormick, M / Markov, N / Mattione, P / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mehrabyan, S / Melone, J J / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Moriya, K / Morrow, S A / Moteabbed, M / Mueller, J / Munevar, E / Mutchler, G S / Nadel-Turonski, P / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M R / Niyazov, R A / Nozar, M / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Paterson, C / Anefalos Pereira, S / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Rossi, P / Sabatié, F / Salamanca, J / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Sharov, D / Shvedunov, N V / Smith, E S / Smith, L C / Sober, D I / Sokhan, D / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Stoler, P / Strakovsky, I I / Strauch, S / Taiuti, M / Tedeschi, D J / Tkabladze, A / Tkachenko, S / Todor, L / Ungaro, M / Vineyard, M F / Vlassov, A V / Watts, D P / Weinstein, L B / Williams, M / Wolin, E / Yegneswaran, A / Zana, L / Zhang, B / Zhang, J / Zhao, B / Zhao, Z W

    Physical review letters

    2007  Volume 99, Issue 26, Page(s) 262302

    Abstract: The photoproduction of vector mesons on various nuclei has been studied using the CLAS detector at Jefferson Laboratory. The vector mesons, rho, omega, and varphi, are observed via their decay to e;{+}e;{-}, in order to reduce the effects of final-state ... ...

    Abstract The photoproduction of vector mesons on various nuclei has been studied using the CLAS detector at Jefferson Laboratory. The vector mesons, rho, omega, and varphi, are observed via their decay to e;{+}e;{-}, in order to reduce the effects of final-state interactions in the nucleus. Of particular interest are possible in-medium effects on the properties of the rho meson. The rho mass spectrum is extracted from the data on various nuclei, 2H, C, Fe, and Ti. We observe no significant mass shift and some broadening consistent with expected collisional broadening for the rho meson.
    Language English
    Publishing date 2007-12-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.99.262302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Precise measurement of the neutron magnetic form factor G(M)n in the few-GeV2 region.

    Lachniet, J / Afanasev, A / Arenhövel, H / Brooks, W K / Gilfoyle, G P / Higinbotham, D / Jeschonnek, S / Quinn, B / Vineyard, M F / Adams, G / Adhikari, K P / Amaryan, M J / Anghinolfi, M / Asavapibhop, B / Asryan, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P /
    Baltzell, N A / Barrow, S / Batourine, V / Battaglieri, M / Beard, K / Bedlinskiy, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Bonner, B E / Bookwalter, C / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Bültmann, S / Burkert, V D / Calarco, J R / Careccia, S L / Carman, D S / Casey, L / Cheng, L / Cole, P L / Coleman, A / Collins, P / Cords, D / Corvisiero, P / Crabb, D / Crede, V / Cummings, J P / Dale, D / Daniel, A / Dashyan, N / De Masi, R / De Vita, R / De Sanctis, E / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dhamija, S / Dharmawardane, K V / Dhuga, K S / Dickson, R / Djalali, C / Dodge, G E / Doughty, D / Dragovitsch, P / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / El Fassi, L / Elouadrhiri, L / Empl, A / Eugenio, P / Fatemi, R / Fedotov, G / Fersch, R / Feuerbach, R J / Forest, T A / Fradi, A / Gabrielyan, M Y / Garçon, M / Gavalian, G / Gevorgyan, N / Giovanetti, K L / Girod, F X / Goetz, J T / Gohn, W / Golovatch, E / Gothe, R W / Graham, L / Griffioen, K A / Guidal, M / Guillo, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hafidi, K / Hakobyan, H / Hanretty, C / Hardie, J / Hassall, N / Heddle, D / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hu, J / Huertas, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Isupov, E L / Ito, M M / Jenkins, D / Jo, H S / Johnstone, J R / Joo, K / Juengst, H G / Kageya, T / Kalantarians, N / Keller, D / Kellie, J D / Khandaker, M / Khetarpal, P / Kim, K Y / Kim, K / Kim, W / Klein, A / Klein, F J / Klusman, M / Konczykowski, P / Kossov, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Kuleshov, S V / Kuznetsov, V / Laget, J M / Langheinrich, J / Lawrence, D / Lima, A C S / Livingston, K / Lowry, M / Lu, H Y / Lukashin, K / Maccormick, M / Malace, S / Manak, J J / Markov, N / Mattione, P / McAleer, S / McCracken, M E / McKinnon, B / McNabb, J W C / Mecking, B A / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Mineeva, T / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Moreno, B / Moriya, K / Morrow, S A / Moteabbed, M / Mueller, J / Munevar, E / Mutchler, G S / Nadel-Turonski, P / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M R / Niyazov, R A / Nozar, M / O'Rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Park, S / Pasyuk, E / Paterson, C / Pereira, S Anefalos / Philips, S A / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Popa, I / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Rosner, G / Rossi, P / Rowntree, D / Rubin, P D / Sabatié, F / Saini, M S / Salamanca, J / Salgado, C / Sandorfi, A / Santoro, J P / Sapunenko, V / Schott, D / Schumacher, R A / Serov, V S / Sharabian, Y G / Sharov, D / Shaw, J / Shvedunov, N V / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Sokhan, D / Starostin, A / Stavinsky, A / Stepanyan, S / Stepanyan, S S / Stokes, B E / Stoler, P / Stopani, K A / Strakovsky, I I / Strauch, S / Suleiman, R / Taiuti, M / Taylor, S / Tedeschi, D J / Thompson, R / Tkabladze, A / Tkachenko, S / Ungaro, M / Vlassov, A V / Watts, D P / Wei, X / Weinstein, L B / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Yun, J / Yurov, M / Zana, L / Zhang, J / Zhao, B / Zhao, Z W

    Physical review letters

    2009  Volume 102, Issue 19, Page(s) 192001

    Abstract: The neutron elastic magnetic form factor was extracted from quasielastic electron scattering on deuterium over the range Q;{2}=1.0-4.8 GeV2 with the CLAS detector at Jefferson Lab. High precision was achieved with a ratio technique and a simultaneous in ... ...

    Abstract The neutron elastic magnetic form factor was extracted from quasielastic electron scattering on deuterium over the range Q;{2}=1.0-4.8 GeV2 with the CLAS detector at Jefferson Lab. High precision was achieved with a ratio technique and a simultaneous in situ calibration of the neutron detection efficiency. Neutrons were detected with electromagnetic calorimeters and time-of-flight scintillators at two beam energies. The dipole parametrization gives a good description of the data.
    Language English
    Publishing date 2009-05-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.102.192001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Search for the photoexcitation of exotic mesons in the pi+pi+pi- system.

    Nozar, M / Salgado, C / Weygand, D P / Guo, L / Adams, G / Li, Ji / Eugenio, P / Amaryan, M J / Anghinolfi, M / Asryan, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P / Baltzell, N A / Barrow, S / Battaglieri, M / Bedlinskiy, I / Bektasoglu, M /
    Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Blaszczyk, L / Bonner, B E / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Carnahan, B / Casey, L / Cazes, A / Chen, S / Cheng, L / Cole, P L / Collins, P / Coltharp, P / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Crede, V / Cummings, J P / Dale, D / Dashyan, N / De Masi, R / De Vita, R / De Sanctis, E / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dharmawardane, K V / Dhuga, K S / Dickson, R / Djalali, C / Dodge, G E / Doughty, D / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / El Fassi, L / Elouadrhiri, L / Fatemi, R / Fedotov, G / Feuerbach, R J / Forest, T A / Fradi, A / Funsten, H / Garçon, M / Gavalian, G / Gevorgyan, N / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gothe, R W / Griffioen, K A / Guidal, M / Guillo, M / Guler, N / Gyurjyan, V / Hadjidakis, C / Hafidi, K / Hakobyan, H / Hanretty, C / Hardie, J / Hassall, N / Heddle, D / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Isupov, E L / Ito, M M / Jenkins, D / Jo, H S / Johnstone, J R / Joo, K / Juengst, H G / Kalantarians, N / Kellie, J D / Khandaker, M / Kim, W / Klein, A / Klein, F J / Kossov, M / Krahn, Z / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Kuleshov, S V / Kuznetsov, V / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Livingston, K / Lu, H Y / Maccormick, M / Markov, N / Mattione, P / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mehrabyan, S / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Mirazita, M / Miskimen, R / Mokeev, V / Moreno, B / Moriya, K / Morrow, S A / Moteabbed, M / Mueller, J / Munevar, E / Mutchler, G S / Nadel-Turonski, P / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M R / Niyazov, R A / O'Rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Paterson, C / Anefalos Pereira, S / Philips, S A / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Popa, I / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Rossi, P / Rubin, P D / Sabatié, F / Salamanca, J / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Sharov, D / Shvedunov, N V / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Sokhan, D / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Stoler, P / Strakovsky, I I / Strauch, S / Taiuti, M / Tedeschi, D J / Thoma, U / Tkabladze, A / Tkachenko, S / Todor, L / Ungaro, M / Vineyard, M F / Vlassov, A V / Watts, D P / Weinstein, L B / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Zana, L / Zhang, J / Zhao, B / Zhao, Z W

    Physical review letters

    2009  Volume 102, Issue 10, Page(s) 102002

    Abstract: A search for exotic mesons in the pi;{+}pi;{+}pi;{-} system photoproduced by the charge exchange reaction gammap-->pi;{+}pi;{+}pi;{-}(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV ... ...

    Abstract A search for exotic mesons in the pi;{+}pi;{+}pi;{-} system photoproduced by the charge exchange reaction gammap-->pi;{+}pi;{+}pi;{-}(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen target. A partial wave analysis was performed on a sample of 83 000 events, the highest such statistics to date in this reaction at these energies. The main objective of this study was to look for the photoproduction of an exotic J;{PC}=1;{-+} resonant state in the 1 to 2 GeV mass range. Our partial wave analysis shows production of the a_{2}(1320) and the pi_{2}(1670) mesons, but no evidence for the a_{1}(1260), nor the pi_{1}(1600) exotic state at the expected levels. An upper limit of 13.5 nb is determined for the exotic pi_{1}(1600) cross section, less than 2% of the a_{2}(1320) production.
    Language English
    Publishing date 2009-03-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.102.102002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Measurement of the N-->Delta(+)(1232) transition at high-momentum transfer by pi(0) electroproduction.

    Ungaro, M / Stoler, P / Aznauryan, I / Burkert, V D / Joo, K / Smith, L C / Adams, G / Amarian, M / Ambrozewicz, P / Anghinolfi, M / Asryan, G / Audit, G / Avakian, H / Bagdasaryan, H / Ball, J P / Baltzell, N A / Barrow, S / Batourine, V / Battaglieri, M /
    Bedliski, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Bonner, B E / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Cazes, A / Chen, S / Cole, P L / Coltharp, P / Cords, D / Corvisiero, P / Crabb, D / Cummings, J P / Sanctis, E De / Devita, R / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dharmawardane, K V / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / Elouadrhiri, L / Eugenio, P / Fatemi, R / Fedotov, G / Feldman, G / Feuerbach, R J / Funsten, H / Garçon, M / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J / Gordon, C I O / Gothe, R W / Griffioen, K A / Guidal, M / Guillo, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hakobyan, R S / Hardie, J / Heddle, D / Hersman, F W / Hleiqawi, I / Holtrop, M / Hicks, K / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Ito, M M / Jenkins, D / Jo, H S / Juengst, H G / Kellie, J D / Khandaker, M / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Kossov, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Lee, T / Li, Ji / Livingston, K / Marchand, C / Markov, N / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mehrabyan, S / Melone, J J / Mestayer, M D / Meyer, C A / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Morand, L / Morrow, S A / Mueller, J / Mutchler, G S / Napolitano, J / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M / Niyazov, R A / Nozar, M / O'rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Philips, S A / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Rossi, P / Rubin, P D / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Skabelin, A V / Smith, E S / Sober, D I / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Strakovsky, I I / Strauch, S / Taiuti, M / Tedeschi, D J / Thoma, U / Tkabladze, A / Todor, L / Tkachenko, S / Tur, C / Vineyard, M F / Vlassov, A V / Weinstein, L B / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Zana, L / Zhang, B / Zhang, J / Zhao, B

    Physical review letters

    2006  Volume 97, Issue 11, Page(s) 112003

    Abstract: We report a new measurement of the exclusive electroproduction reaction gamma(*)p-->pi(0)p to explore the evolution from soft nonperturbative physics to hard processes via the Q(2) dependence of the magnetic (M(1+)), electric (E(1+)), and scalar (S(1+)) ... ...

    Abstract We report a new measurement of the exclusive electroproduction reaction gamma(*)p-->pi(0)p to explore the evolution from soft nonperturbative physics to hard processes via the Q(2) dependence of the magnetic (M(1+)), electric (E(1+)), and scalar (S(1+)) multipoles in the N-->Delta transition. 9000 differential cross section data points cover W from threshold to 1.4 GeV/c(2), 4pi center-of-mass solid angle, and Q(2) from 3 to 6 GeV(2)/c(2), the highest yet achieved. It is found that the magnetic form factor G(M)(*) decreases with Q(2) more steeply than the proton magnetic form factor, the ratio E(1+)/M(1+) is small and negative, indicating strong helicity nonconservation, and the ratio S(1+)/M(1+) is negative, while its magnitude increases with Q(2).
    Language English
    Publishing date 2006-09-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.97.112003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Search for the Theta+ Pentaquark in the gammad--> DeltanK+ reaction measured with the CLAS spectrometer.

    Niccolai, S / Mirazita, M / Rossi, P / Baltzell, N A / Carman, D S / Hicks, K / McKinnon, B / Mibe, T / Stepanyan, S / Tedeschi, D J / Adams, G / Ambrozewicz, P / Anefalos Pereira, S / Anghinolfi, M / Asryan, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P /
    Batourine, V / Battaglieri, M / Bedlinskiy, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Biselli, A S / Boiarinov, S / Bouchigny, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carnahan, B / Chen, S / Cole, P L / Collins, P / Coltharp, P / Crabb, D / Crannell, H / Crede, V / Cummings, J P / Dashyan, N / Degtyarenko, P V / De Masi, R / Deppman, A / De Sanctis, E / Deur, A / Devita, R / Dharmawardane, K V / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dugger, M / Dzyubak, O P / Egiyan, H / Egiyan, K S / El Fassi, L / Elouadrhiri, L / Eugenio, P / Fedotov, G / Feldman, G / Funsten, H / Garçon, M / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gonenc, A / Gordon, C I O / Gothe, R W / Griffioen, K A / Guidal, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hafidi, K / Hakobyan, H / Hakobyan, R S / Hardie, J / Hersman, F W / Hleiqawi, I / Holtrop, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Isupov, E L / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Juengst, H G / Kellie, J D / Khandaker, M / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Kossov, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Kuleshov, S V / Lachniet, J / Langheinrich, J / Lawrence, D / Lee, T / Li, Ji / Livingston, K / Lu, H / MacCormick, M / Markov, N / Mecking, B A / Mellor, J / Melone, J J / Mestayer, M D / Meyer, C A / Mikhailov, K / Minehart, R / Miskimen, R / Mokeev, V / Morand, L / Morrow, S A / Moteabbed, M / Mutchler, G S / Nadel-Turonski, P / Napolitano, J / Nasseripour, R / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niroula, M R / Niyazov, R A / Nozar, M / de Oliveira Echeimberg, J / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Paterson, C / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Shvedunov, N V / Smith, E S / Smith, L C / Sober, D I / Stavinsky, A / Stepanyan, S S / Stokes, B E / Stoler, P / Strakovsky, I I / Strauch, S / Taiuti, M / Thoma, U / Tkabladze, A / Tkachenko, S / Todor, L / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Watts, D P / Weinstein, L B / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Zana, L / Zhang, J / Zhao, B / Zhao, Z

    Physical review letters

    2006  Volume 97, Issue 3, Page(s) 32001

    Abstract: For the first time, the reaction gammad-->DeltanK+ has been analyzed in order to search for the exotic pentaquark baryon Theta+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and ... ...

    Abstract For the first time, the reaction gammad-->DeltanK+ has been analyzed in order to search for the exotic pentaquark baryon Theta+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and the CEBAF Large Acceptance Spectrometer (CLAS). No statistically significant structures were observed in the nK+ invariant-mass distribution. The upper limit on the gammad-->DeltaTheta+ integrated cross section has been calculated and found to be between 5 and 25 nb, depending on the production model assumed. The upper limit on the differential cross section is also reported.
    Language English
    Publishing date 2006-07-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.97.032001
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  7. Article: Measurement of two- and three-nucleon short-range correlation probabilities in nuclei.

    Egiyan, K S / Dashyan, N B / Sargsian, M M / Strikman, M I / Weinstein, L B / Adams, G / Ambrozewicz, P / Anghinolfi, M / Asavapibhop, B / Asryan, G / Avakian, H / Baghdasaryan, H / Baillie, N / Ball, J P / Baltzell, N A / Batourine, V / Battaglieri, M / Bedlinskiy, I / Bektasoglu, M /
    Bellis, M / Benmouna, N / Biselli, A S / Bonner, B E / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Brooks, W K / Bültmann, S / Burkert, V D / Bultuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Carnahan, B / Chen, S / Cole, P L / Coltharp, P / Corvisiero, P / Crabb, D / Crannell, H / Cummings, J P / De Sanctis, E / DeVita, R / Degtyarenko, P V / Denizli, H / Dennis, L / Dharmawardane, K V / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dragovitsch, P / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Elouadrhiri, L / Empl, A / Eugenio, P / Fatemi, R / Fedotov, G / Feuerbach, R J / Forest, T A / Funsten, H / Gavalian, G / Gevorgyan, N G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Golovatch, E / Gothe, R W / Griffioen, K A / Guidal, M / Guillo, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hardie, J / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hu, J / Huertas, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Juengst, H G / Kellie, J D / Khandaker, M / Kim, K Y / Kim, K / Kim, W / Klein, A / Klein, F J / Klimenko, A / Klusman, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Kuleshov, S / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Lee, T / Livingston, K / Maximon, L C / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Morrow, S A / Mueller, J / Mutchler, G S / Nadel-Turonski, P / Napolitano, J / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niyazov, R A / O'Relly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Peterson, C / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rosner, G / Rossi, P / Rowntree, D / Rubin, P D / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Shaw, J / Smith, E S / Smith, L C / Sober, D I / Stavinsky, A / Stepanyan, S / Stokes, B E / Stoler, P / Strauch, S / Suleiman, R / Taiuti, M / Taylor, S / Tedeschi, D J / Thompson, R / Tkabladze, A / Tkachenko, S / Todor, L / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Yun, J / Zana, L / Zhang, J

    Physical review letters

    2006  Volume 96, Issue 8, Page(s) 82501

    Abstract: The ratios of inclusive electron scattering cross sections of 4He, 12C, and 56Fe to 3He have been measured at 1 ... 1.4 GeV2, the ratios exhibit two separate plateaus, at 1.5 ... 2.25. This pattern is predicted by models that ...

    Abstract The ratios of inclusive electron scattering cross sections of 4He, 12C, and 56Fe to 3He have been measured at 1 < xB <. At Q2 > 1.4 GeV2, the ratios exhibit two separate plateaus, at 1.5 < xB < 2 and at xB > 2.25. This pattern is predicted by models that include 2- and 3-nucleon short-range correlations (SRC). Relative to A = 3, the per-nucleon probabilities of 3-nucleon SRC are 2.3, 3.1, and 4.4 times larger for A = 4, 12, and 56. This is the first measurement of 3-nucleon SRC probabilities in nuclei.
    Language English
    Publishing date 2006-03-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.96.082501
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  8. Article: Eta' photoproduction on the proton for photon energies from 1.527 to 2.227 GeV.

    Dugger, M / Ball, J P / Collins, P / Pasyuk, E / Ritchie, B G / Adams, G / Ambrozewicz, P / Anciant, E / Anghinolfi, M / Asavapibhop, B / Asryan, G / Audit, G / Avakian, H / Bagdasaryan, H / Baillie, N / Baltzell, N A / Barrow, S / Batourine, V / Battaglieri, M /
    Beard, K / Bedlinskiy, I / Bektasoglu, M / Bellis, M / Benmouna, N / Berman, B L / Bianchi, N / Biselli, A S / Bonner, B E / Bouchigny, S / Boiarinov, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Carnahan, B / Chen, S / Cole, P L / Coleman, A / Coltharp, P / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Credé, V / Cummings, J P / De Sanctis, E / DeVita, R / Degtyarenko, P V / Denizli, H / Dennis, L / Deur, A / Dharmawardane, K V / Dhuga, K S / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dragovitsch, P / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / Elouadrhiri, L / Empl, A / Eugenio, P / Fatemi, R / Fedotov, G / Feldman, G / Feuerbach, R J / Forest, T A / Funsten, H / Garçon, M / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gothe, R W / Griffioen, K A / Guidal, M / Guillo, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hakobyan, R S / Hardie, J / Heddle, D / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hu, J / Huertas, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Juengst, H G / Kellie, J D / Khandaker, M / Kim, K Y / Kim, K / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Klusman, M / Kossov, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Lee, T / Lima, A C S / Livingston, K / Lukashin, K / Manak, J J / Marchand, C / Maximon, L C / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Morrow, S A / Muccifora, V / Mueller, J / Mutchler, G S / Nadel-Turonski, P / Napolitano, J / Nasseripour, R / Niccolai, S / Niculescu, G / Niczyporuk, B B / Niyazov, R A / Nozar, M / O'Rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Paterson, C / Philips, S A / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ronchetti, F / Rosner, G / Rossi, P / Rowntree, D / Rubin, P D / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Shafi, A / Sharabian, Y G / Shaw, J / Simionatto, S / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Spraker, M / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Stoler, P / Strakovsky, I I / Strauch, S / Taiuti, M / Taylor, S / Tedeschi, D J / Thoma, U / Thompson, R / Tkabladze, A / Tkachenko, S / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Wang, K / Weinstein, L B / Weller, H / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Yun, J / Zana, L / Zhang, J

    Physical review letters

    2006  Volume 96, Issue 6, Page(s) 62001

    Abstract: Differential cross sections for the reaction gamma p --> eta' p have been measured with the CLAS spectrometer and a tagged photon beam with energies from 1.527 to 2.227 GeV. The results reported here possess much greater accuracy than previous ... ...

    Abstract Differential cross sections for the reaction gamma p --> eta' p have been measured with the CLAS spectrometer and a tagged photon beam with energies from 1.527 to 2.227 GeV. The results reported here possess much greater accuracy than previous measurements. Analyses of these data suggest for the first time the coupling of the eta'N channel to both the S11(1535) and P11(1710) resonances, known to couple strongly to the etaN channel in photoproduction on the proton, and the importance of J = 3/2 resonances in the process.
    Language English
    Publishing date 2006-02-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.96.062001
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  9. Article: Beam-helicity asymmetries in double-charged-pion photoproduction on the proton.

    Strauch, S / Berman, B L / Adams, G / Ambrozewicz, P / Anghinolfi, M / Asavapibhop, B / Asryan, G / Audit, G / Avakian, H / Bagdasaryan, H / Baillie, N / Ball, J P / Baltzell, N A / Barrow, S / Batourine, V / Battaglieri, M / Beard, K / Bedlinskiy, I / Bektasoglu, M /
    Bellis, M / Benmouna, N / Bennhold, C / Biselli, A S / Boiarinov, S / Bouchigny, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Bültmann, S / Burkert, V D / Butuceanu, C / Calarco, J R / Careccia, S L / Carman, D S / Carnahan, B / Chen, S / Cole, P L / Coleman, A / Coltharp, P / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Cummings, J P / Degtyarenko, P V / Denizli, H / Dennis, L / De Sanctis, E / Deur, A / Devita, R / Dharmawardane, K V / Dhuga, K S / Djalali, C / Dodge, G E / Donnelly, J / Doughty, D / Dragovitsch, P / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / Elouadrhiri, L / Empl, A / Eugenio, P / Fatemi, R / Fedotov, G / Feldman, G / Feuerbach, R J / Fix, A / Forest, T A / Funsten, H / Gavalian, G / Gilfoyle, G P / Giovanetti, K L / Girod, F X / Goetz, J T / Gothe, R W / Griffioen, K A / Guidal, M / Guler, N / Guo, L / Gyurjyan, V / Hadjidakis, C / Hakobyan, R S / Hardie, J / Heddle, D / Hersman, F W / Hicks, K / Hleiqawi, I / Holtrop, M / Hu, J / Huertas, M / Hyde-Wright, C E / Ilieva, Y / Ireland, D G / Ishkhanov, B S / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Juengst, H G / Kellie, J D / Khandaker, M / Kim, K Y / Kim, K / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Klusman, M / Kossov, M / Kramer, L H / Kubarovsky, V / Kuhn, J / Kuhn, S E / Lachniet, J / Laget, J M / Langheinrich, J / Lawrence, D / Lee, T / Lima, A C S / Livingston, K / Lukashin, K / Manak, J J / Marchand, C / McAleer, S / McKinnon, B / McNabb, J W C / Mecking, B A / Mestayer, M D / Meyer, C A / Mibe, T / Mikhailov, K / Minehart, R / Mirazita, M / Miskimen, R / Mokeev, V / Morrow, S A / Muccifora, V / Mueller, J / Mutchler, G S / Nadel-Turonski, P / Napolitano, J / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niyazov, R A / Nozar, M / O'rielly, G V / Osipenko, M / Ostrovidov, A I / Park, K / Pasyuk, E / Paterson, C / Philips, S A / Pierce, J / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Roberts, W / Ronchetti, F / Rosner, G / Rossi, P / Rowntree, D / Rubin, P D / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Shafi, A / Sharabian, Y G / Shaw, J / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Stavinsky, A / Stepanyan, S S / Stepanyan, S / Stokes, B E / Stoler, P / Strakovsky, I I / Suleiman, R / Taiuti, M / Taylor, S / Tedeschi, D J / Thoma, U / Thompson, R / Tkabladze, A / Tkachenko, S / Todor, L / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Wang, K / Weinstein, L B / Weygand, D P / Williams, M / Wolin, E / Wood, M H / Yegneswaran, A / Yun, J / Zana, L / Zhang, J

    Physical review letters

    2005  Volume 95, Issue 16, Page(s) 162003

    Abstract: Beam-helicity asymmetries for the two-pion-photoproduction reaction gammap-->ppi(+)pi(-) have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab ... ...

    Abstract Beam-helicity asymmetries for the two-pion-photoproduction reaction gammap-->ppi(+)pi(-) have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.
    Language English
    Publishing date 2005-10-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.95.162003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Onset of asymptotic scaling in deuteron photodisintegration.

    Rossi, P / Mirazita, M / Ronchetti, F / De Sanctis, E / Adams, G / Ambrozewicz, P / Anciant, E / Anghinolfi, M / Asavapibhop, B / Audit, G / Avakian, H / Bagdasaryan, H / Ball, J P / Barrow, S / Battaglieri, M / Beard, K / Bektasoglu, M / Bellis, M / Benmouna, N /
    Berman, B L / Bertozzi, W / Bianchi, N / Biselli, A S / Boiarinov, S / Bonner, B E / Bouchigny, S / Bradford, R / Branford, D / Briscoe, W J / Brooks, W K / Burkert, V D / Butuceanu, C / Calarco, J R / Carman, D S / Carnahan, B / Chen, S / Cole, P L / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Cummings, J P / De Vita, R / Degtyarenko, P V / Denizli, H / Dennis, L / Deppman, A / Dharmawardane, K V / Dhuga, K S / Djalali, C / Dodge, G E / Doughty, D / Dragovitsch, P / Dugger, M / Dytman, S / Dzyubak, O P / Egiyan, H / Egiyan, K S / Elouadrhiri, L / Empl, A / Eugenio, P / Fatemi, R / Feuerbach, R J / Ficenec, J / Forest, T A / Funsten, H / Gai, M / Gavalian, G / Gilad, S / Gilfoyle, G P / Giovanetti, K L / Gordon, C I O / Griffioen, K / Guidal, M / Guillo, M / Guo, L / Gyurjyan, V / Hadjidakis, C / Hakobyan, R S / Hardie, J / Heddle, D / Hersman, F W / Hicks, K / Hicks, R S / Holtrop, M / Hu, J / Hyde-Wright, C E / Ilieva, Y / Ito, M M / Jenkins, D / Jo, H S / Joo, K / Kellie, J D / Khandaker, M / Kim, K Y / Kim, K / Kim, W / Klein, A / Klein, F J / Klimenko, A V / Klusman, M / Kossov, M / Kramer, L H / Kuhn, J / Kuhn, S E / Lachniet, J / Laget, J M / Lawrence, D / Li, Ji / Lima, A C S / Livingston, K / Lukashin, K / Manak, J J / Marchand, C / McAleer, S / McCarthy, J / McNabb, J W C / Mecking, B A / Mehrabyan, S / Melone, J J / Mestayer, M D / Meyer, C A / Mikhailov, K / Miskimen, R / Mokeev, V / Morand, L / Morrow, S A / Muccifora, V / Mueller, J / Mutchler, G S / Napolitano, J / Nasseripour, R / Niccolai, S / Niculescu, G / Niculescu, I / Niczyporuk, B B / Niyazov, R A / Nozar, M / O'Brien, J T / O'Rielly, G V / Osipenko, M / Ostrovidov, A / Park, K / Pasyuk, E / Peterson, G / Philips, S A / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Pozdniakov, S / Preedom, B M / Price, J W / Prok, Y / Protopopescu, D / Qin, L M / Raue, B A / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Rosner, G / Rowntree, D / Rubin, P D / Sabatié, F / Salgado, C / Santoro, J P / Sapunenko, V / Schumacher, R A / Serov, V S / Sharabian, Y G / Shaw, J / Simionatto, S / Skabelin, A V / Smith, E S / Smith, L C / Sober, D I / Spraker, M / Stavinsky, A / Stepanyan, S / Stokes, B / Stoler, P / Strakovsky, I I / Strauch, S / Taiuti, M / Taylor, S / Tedeschi, D J / Thoma, U / Thompson, R / Tkabladze, A / Todor, L / Tur, C / Ungaro, M / Vineyard, M F / Vlassov, A V / Wang, K / Weinstein, L B / Weller, H / Weygand, D P / Whisnant, C S / Wolin, E / Wood, M H / Yegneswaran, A / Yun, J / Zhang, B / Zhou, Z

    Physical review letters

    2005  Volume 94, Issue 1, Page(s) 12301

    Abstract: We investigate the transition from the nucleon-meson to the quark-gluon description of the strong interaction using the photon energy dependence of the d(gamma,p)n differential cross section for photon energies above 0.5 GeV and center-of-mass proton ... ...

    Abstract We investigate the transition from the nucleon-meson to the quark-gluon description of the strong interaction using the photon energy dependence of the d(gamma,p)n differential cross section for photon energies above 0.5 GeV and center-of-mass proton angles between 30 degrees and 150 degrees. A possible signature for this transition is the onset of cross-section s(-11) scaling with the total energy squared, s, at some proton transverse momentum P(T). The results show that the scaling has been reached for proton transverse momentum above about 1.1 GeV/c. This may indicate that the quark-gluon regime is reached above this momentum.
    Language English
    Publishing date 2005-01-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.94.012301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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