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  1. Article: Q2 Dependence of quadrupole strength in the gamma*p --> Delta(+)(1232) --> p pi(0) transition.

    Joo, K / Smith, L C / Burkert, V D / Minehart, R / Aznauryan, I G / Elouadrhiri, L / Stepanyan, S / Adams, G S / Amaryan, M J / Anciant, E / Anghinolfi, M / Armstrong, D S / Asavapibhop, B / Audit, G / Auger, T / Avakian, H / Barrow, S / Bagdasaryan, H / Battaglieri, M /
    Beard, K / Bektasoglu, M / Bertozzi, W / Bianchi, N / Biselli, A S / Boiarinov, S / Bonner, B E / Brooks, W K / Calarco, J R / Capitani, G P / Carman, D S / Carnahan, B / Cole, P L / Coleman, A / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Cummings, J / De Sanctis, E / De Vita, R / Degtyarenko, P V / Demirchyan, R A / Denizli, H / Dennis, L C / Deppman, A / Dharmawardane, K V / Dhuga, K S / Djalali, C / Dodge, G E / Doughty, D / Dragovitsch, P / Dugger, M / Dytman, S / Eckhause, M / Efremenko, Y V / Egiyan, H / Egiyan, K S / Farhi, L / Feuerbach, R J / Ficenec, J / Fissum, K / Forest, T A / Funsten, H / Gai, M / Gavrilov, V B / Gilad, S / Gilfoyle, G P / Giovanetti, K L / Girard, P / Griffioen, K A / Guidal, M / Guillo, M / Gyurjyan, V / Hancock, D / Hardie, J / Heddle, D / Heisenberg, J / Hersman, F W / Hicks, K / Hicks, R S / Holtrop, M / Hyde-Wright, C E / Ito, M M / Jenkins, D / Kelley, J H / Khandaker, M / Kim, K Y / Kim, W / Klein, A / Klein, F J / Klusman, M / Kossov, M / Kuang, Y / Kuhn, S E / Laget, J M / Lawrence, D / Longhi, A / Loukachine, K / Lucas, M / Major, R W / Manak, J J / Marchand, C / Matthews, S K / McAleer, S / McNabb, J W C / Mecking, B A / Mestayer, M D / Meyer, C A / Mirazita, M / Miskimen, R / Muccifora, V / Mueller, J / Mutchler, G S / Napolitano, J / Niculescu, G / Niczyporuk, B / Niyazov, R A / Ohandjanyan, M S / Opper, A / Patois, Y / Peterson, G A / Philips, S / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Preedom, B M / Price, J W / Qin, L M / Raue, B A / Reolon, A R / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rossi, P / Rowntree, D / Rubin, P D / Salgado, C W / Sanzone, M / Sapunenko, V / Sargsyan, M / Schumacher, R A / Sharabian, Y G / Shaw, J / Shuvalov, S M / Skabelin, A / Smith, E S / Smith, T / Sober, D I / Spraker, M / Stoler, P / Taiuti, M / Taylor, S / Tedeschi, D / Thompson, R / Todor, L / Tung, T Y / Vineyard, M F / Vlassov, A / Weller, H / Weinstein, L B / Welsh, R / Weygand, D P / Whisnant, S / Witkowski, M / Wolin, E / Yegneswaran, A / Yun, J / Zhou, Z / Zhao, J

    Physical review letters

    2002  Volume 88, Issue 12, Page(s) 122001

    Abstract: Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the Q2 dependence of the ... ...

    Abstract Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the Q2 dependence of the magnetic (M1+), electric (E1+), and scalar (S1+) multipoles in the gamma*p-->Delta(+)-->p pi(0) transition. We report new experimental values for the ratios E(1+)/M(1+) and S(1+)/M(1+) over the range Q2 = 0.4-1.8 GeV2, extracted from precision p(e,e(')p)pi(0) data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.
    Language English
    Publishing date 2002-03-25
    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.88.122001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: The ep -->e'p eta reaction at and above the S11(1535) baryon resonance.

    Thompson, R / Dytman, S / Kim, K Y / Mueller, J / Adams, G S / Amaryan, M J / Anciant, E / Anghinolfi, M / Asavapibhop, B / Auger, T / Audit, G / Avakian, H / Barrow, S / Battaglieri, M / Beard, K / Bektasoglu, M / Bertozzi, W / Bianchi, N / Biselli, A /
    Boiarinov, S / Bonner, B E / Briscoe, W J / Brooks, W / Burkert, V D / Calarco, J R / Capitani, G / Carman, D S / Carnahan, B / Cole, P L / Coleman, A / Connelly, J / Cords, D / Corvisiero, P / Crabb, D / Crannell, H / Cummings, J / Day, D / Degtyarenko, P V / Demirchyan, R A / Dennis, L C / Deppman, A / De Sanctis, E / De Vita, R / Dhuga, K S / Djalali, C / Dodge, G E / Doughty, D / Dragovitsch, P / Dugger, M / Eckhause, M / Efremenko, Y V / Egiyan, H / Egiyan, K S / Elouadrhiri, L / Farhi, L / Feuerbach, R J / Ficenec, J / Fissum, K / Freyberger, A / Funsten, H / Gai, M / Gavrilov, V B / Gilfoyle, G P / Giovanetti, K / Gilad, S / Girard, P / Griffioen, K A / Guidal, M / Guillo, M / Gyurjyan, V / Hancock, D / Hardie, J / Heddle, D / Heisenberg, J / Hersman, F W / Hicks, K / Hicks, R S / Holtrop, M / Hyde-Wright, C E / Ito, M M / Jenkins, D / Joo, K / Kane, J / Khandaker, M / Kim, W / Klein, A / Klein, F J / Klusman, M / Kossov, M / Kuhn, S E / Kuang, Y / Laget, J M / Lawrence, D / Leskin, G A / Longhi, A / Loukachine, K / Lucas, M / Magahiz, R / Major, R W / Manak, J J / Marchand, C / Matthews, S K / McAleer, S / McCarthy, J / McNabb, J W / Mecking, B A / Mestayer, M D / Meyer, C A / Minehart, R / Mirazita, M / Miskimen, R / Muccifora, V / Mutchler, G S / Napolitano, J / Niyazov, R A / Ohandjanyan, M S / O'Brien, J T / Opper, A / Patois, Y / Peterson, G A / Philips, S / Pivnyuk, N / Pocanic, D / Pogorelko, O / Polli, E / Preedom, B M / Price, J W / Qin, L M / Raue, B A / Reolon, A R / Riccardi, G / Ricco, G / Ripani, M / Ritchie, B G / Ronchetti, F / Rossi, P / Roudot, F / Rowntree, D / Rubin, P D / Salgado, C W / Sanzone, M / Sapunenko, V / Sarty, A / Sargsyan, M / Schumacher, R A / Shafi, A / Sharabian, Y G / Shaw, J / Shuvalov, S M / Skabelin, A / Smith, T / Smith, C / Smith, E S / Sober, D I / Spraker, M / Stepanyan, S / Stoler, P / Taiuti, M / Taylor, S / Tedeschi, D / Tung, T Y / Vineyard, M F / Vlassov, A / Weller, H / Weinstein, L B / Welsh, R / Weygand, D P / Whisnant, S / Witkowski, M / Wolin, E / Yegneswaran, A / Yun, J / Zhou, Z / Zhao, J

    Physical review letters

    2001  Volume 86, Issue 9, Page(s) 1702–1706

    Abstract: New cross sections for the reaction e p-->e p eta are reported for total center of mass energy W = 1.5--1.86 GeV and invariant momentum transfer Q2 = 0.25--1.5 (GeV/c)(2). This large kinematic range allows extraction of important new information about ... ...

    Abstract New cross sections for the reaction e p-->e p eta are reported for total center of mass energy W = 1.5--1.86 GeV and invariant momentum transfer Q2 = 0.25--1.5 (GeV/c)(2). This large kinematic range allows extraction of important new information about response functions, photocouplings, and eta N coupling strengths of baryon resonances. Newly observed structure at W approximately 1.65 GeV is shown to come from interference between S and P waves and can be interpreted with known resonances. Improved values are derived for the photon coupling amplitude for the S11(1535) resonance.
    Language English
    Publishing date 2001-02-26
    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.86.1702
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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