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Article: Quasifree pi0 and pi- electroproduction on 4He in the Delta-resonance region.

Steenbakkers, M F M / van Batenburg, M F / Bauer, Th S / Blok, H P / Botto, T / Dodge, G E / Groep, D L / Heimberg, P / Hesselink, W H A / Higinbotham, D W / Jans, E / Jun, Y / Ketel, T J / Lapikás, L / de Lange, D J J / Norum, B E / Passchier, I / Starink, R / Todor, L /

de Vries, H

Physical review letters

2005 Volume 95, Issue 17, Page(s) 172501

Abstract: The reactions 4He(e, e' p3He)pi- and 4He(e, e' p3He)pi0 were studied simultaneously, and for the first time, in a large kinematical domain including the Delta-resonance region. This was achieved by detecting the recoiling 3He and 3H nuclei instead of the ...

Abstract	The reactions 4He(e, e' p3He)pi- and 4He(e, e' p3He)pi0 were studied simultaneously, and for the first time, in a large kinematical domain including the Delta-resonance region. This was achieved by detecting the recoiling 3He and 3H nuclei instead of the emitted pions. The dependences of the cross section on the recoil momentum p(rec), the invariant mass WpiN, and the direction thetapi,q' and phipi,q' of the produced pion, are globally well described by the results of (quasifree) distorted-wave impulse approximation calculations. However, in the Delta-resonance region there are clear discrepancies, which point to medium modifications of the Delta in 4He.
Language	English
Publishing date	2005-10-21
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.95.172501
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Article ; Online: Investigation of the exclusive 3He(e,e' pn)1H reaction.

Middleton, D G / Annand, J R M / Antelo, M Ases / Ayerbe, C / Barneo, P / Baumann, D / Bermuth, J / Bernauer, J / Blok, H P / Böhm, R / Bosnar, D / Ding, M / Distler, M O / Friedrich, J / Llongo, J García / Glazier, D I / Golak, J / Glöckle, W / Grabmayr, P /

Hehl, T / Heim, J / Hesselink, W H A / Jans, E / Kamada, H / Mañas, G Jover / Kohl, M / Lapikás, L / MacGregor, I J D / Martin, I / McGeorge, J C / Merkel, H / Merle, P / Monstad, K / Moschini, F / Müller, U / Nogga, A / Pérez-Benito, R / Pospischil, Th / Potokar, M / Rosner, G / Seimetz, M / Skibiński, R / de Vries, H / Walcher, Th / Watts, D P / Weinriefer, M / Weiss, M / Witała, H / Zihlmann, B

Physical review letters

2009 Volume 103, Issue 15, Page(s) 152501

Abstract: Cross sections for the 3He(e,e' pn)1H reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections are presented as a function of the momentum of the recoil ... ...

Abstract	Cross sections for the 3He(e,e' pn)1H reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections are presented as a function of the momentum of the recoil proton and the momentum transfer. Continuum Faddeev calculations using the Argonne V18 and Bonn-B nucleon-nucleon potentials overestimate the measured cross sections by a factor 5 at low recoil proton momentum with the discrepancy becoming smaller at higher recoil proton momentum.
Language	English
Publishing date	2009-10-09
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.103.152501
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Article: Electron-induced neutron knockout from 4He.

Misiejuk, A / Papandreou, Z / Voutier, E / Bauer, Th S / Blok, H P / Boersma, D J / Den Bok, H W / Bruins, E E W / Farzanpay, F / Grüner, K / Hesselink, W H A / Huber, G M / Jans, E / Kalantar-Nayestanaki, N / Kasdorp, W-J / Konijn, J / Laget, J-M / Lapikás, L / Lolos, G J /

Onderwater, G J G / Pellegrino, A / Schroevers, R / Spaltro, C M / Starink, R / van der Steenhoven, G / Steiger, J J M / Visschers, J L / Willering, H W / Yeomans, D M

Physical review letters

2002 Volume 89, Issue 17, Page(s) 172501

Abstract: The differential cross section for electron-induced neutron knockout in the reaction 4He(e,e(')n)(3)He has been measured for the first time with a statistical accuracy of 11%. The experiment was performed in quasielastic kinematics at a momentum transfer ...

Abstract	The differential cross section for electron-induced neutron knockout in the reaction 4He(e,e(')n)(3)He has been measured for the first time with a statistical accuracy of 11%. The experiment was performed in quasielastic kinematics at a momentum transfer of 300 MeV/c and in the missing-momentum range of 25-70 MeV/c. The comparison of the data with theoretical calculations shows an impressive increase of the cross section resulting from final state interaction effects. Specifically, the p-n charge-exchange process dominates the cross section in this kinematical regime.
Language	English
Publishing date	2002-10-21
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.89.172501
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Measurement of the tensor structure function b1 of the deuteron.

Airapetian, A / Akopov, N / Akopov, Z / Amarian, M / Ammosov, V V / Andrus, A / Aschenauer, E C / Augustyniak, W / Avakian, R / Avetissian, A / Avetissian, E / Bailey, P / Balin, D / Baturin, V / Beckmann, M / Belostotski, S / Bernreuther, S / Bianchi, N / Blok, H P /

Böttcher, H / Borissov, A / Borysenko, A / Bouwhuis, M / Brack, J / Brüll, A / Bryzgalov, V / Capitani, G P / Chen, T / Chiang, H C / Ciullo, G / Contalbrigo, M / Dalpiaz, P F / De Leo, R / Demey, M / De Nardo, L / De Sanctis, E / Devitsin, E / Di Nezza, P / Dreschler, J / Düren, M / Ehrenfried, M / Elalaoui-Moulay, A / Elbakian, G / Ellinghaus, F / Elschenbroich, U / Fabbri, R / Fantoni, A / Fechtchenko, A / Felawka, L / Fox, B / Frullani, S / Gapienko, G / Gapienko, V / Garibaldi, F / Garrow, K / Garutti, E / Gaskell, D / Gavrilov, G / Gharibyan, V / Graw, G / Grebeniouk, O / Greeniaus, L G / Gregor, I M / Hafidi, K / Hartig, M / Hasch, D / Heesbeen, D / Henoch, M / Hertenberger, R / Hesselink, W H A / Hillenbrand, A / Hoek, M / Holler, Y / Hommez, B / Iarygin, G / Ivanilov, A / Izotov, A / Jackson, H E / Jgoun, A / Kaiser, R / Kinney, E / Kisselev, A / Kopytin, M / Korotkov, V / Kozlov, V / Krauss, B / Krivokhijine, V G / Lagamba, L / Lapikás, L / Laziev, A / Lenisa, P / Liebing, P / Linden-Levy, L A / Lipka, K / Lorenzon, W / Lu, H / Lu, J / Lu, S / Ma, B-Q / Maiheu, B / Makins, N C R / Mao, Y / Marianski, B / Marukyan, H / Masoli, F / Mexner, V / Meyners, N / Mikloukho, O / Miller, C A / Miyachi, Y / Muccifora, V / Nagaitsev, A / Nappi, E / Naryshkin, Y / Nass, A / Negodaev, M / Nowak, W-D / Oganessyan, K / Ohsuga, H / Pickert, N / Potashov, S / Potterveld, D H / Raithel, M / Reggiani, D / Reimer, P E / Reischl, A / Reolon, A R / Riedl, C / Rith, K / Rosner, G / Rostomyan, A / Rubacek, L / Rubin, J / Ryckbosch, D / Salomatin, Y / Sanjiev, I / Savin, I / Schäfer, A / Schill, C / Schnell, G / Schüler, K P / Seele, J / Seidl, R / Seitz, B / Shanidze, R / Shearer, C / Shibata, T-A / Shutov, V / Simani, M C / Sinram, K / Stancari, M / Statera, M / Steffens, E / Steijger, J J M / Stenzel, H / Stewart, J / Stinzing, F / Stösslein, U / Tait, P / Tanaka, H / Taroian, S / Tchuiko, B / Terkulov, A / Tkabladze, A / Trzcinski, A / Tytgat, M / Vandenbroucke, A / van der Nat, P B / van der Steenhoven, G / Vetterli, M C / Vikhrov, V / Vincter, M G / Vogel, C / Vogt, M / Volmer, J / Weiskopf, C / Wendland, J / Wilbert, J / Ye, Y / Ye, Z / Yen, S / Zihlmann, B / Zupranski, P

Physical review letters

2005 Volume 95, Issue 24, Page(s) 242001

Abstract: The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only a negligible residual vector polarization enabled the first ... ...

Abstract	The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only a negligible residual vector polarization enabled the first measurement of the tensor asymmetry A(d)zz and the tensor structure function b(d)1 for average values of the Bjorken variable 0.01< <x> <0.45 and of the negative of the squared four-momentum transfer 0.5 GeV2 < <Q2> <5 GeV2. The quantities A(d)zz and b(d)1 are found to be nonzero. The rise of b(d)1 for decreasing values of x can be interpreted to originate from the same mechanism that leads to nuclear shadowing in unpolarized scattering.
Language	English
Publishing date	2005-12-09
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.95.242001
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target.

Airapetian, A / Akopov, N / Akopov, Z / Amarian, M / Andrus, A / Aschenauer, E C / Augustyniak, W / Avakian, R / Avetissian, A / Avetissian, E / Bacchetta, A / Bailey, P / Balin, D / Beckmann, M / Belostotski, S / Bianchi, N / Blok, H P / Böttcher, H / Borissov, A /

Borysenko, A / Bouwhuis, M / Brüll, A / Bryzgalov, V / Capitani, G P / Cappiluppi, M / Chen, T / Ciullo, G / Contalbrigo, M / Dalpiaz, P F / Leo, R De / Demey, M / Nardo, L De / Sanctis, E De / Devitsin, E / Nezza, P Di / Düren, M / Ehrenfried, M / Elalaoui-Moulay, A / Elbakian, G / Ellinghaus, F / Elschenbroich, U / Fabbri, R / Fantoni, A / Fechtchenko, A / Felawka, L / Frullani, S / Gapienko, G / Gapienko, V / Garibaldi, F / Garrow, K / Gavrilov, G / Gharibyan, V / Grebeniouk, O / Gregor, I M / Hadjidakis, C / Hafidi, K / Hartig, M / Hasch, D / Henoch, M / Hesselink, W H A / Hillenbrand, A / Hoek, M / Holler, Y / Hommez, B / Hristova, I / Iarygin, G / Ilyichev, A / Ivanilov, A / Izotov, A / Jackson, H E / Jgoun, A / Kaiser, R / Kinney, E / Kisselev, A / Kobayashi, T / Kopytin, M / Korotkov, V / Kozlov, V / Krauss, B / Krivokhijine, V G / Lagamba, L / Lapikás, L / Laziev, A / Lenisa, P / Liebing, P / Linden-Levy, L A / Lorenzon, W / Lu, H / Lu, J / Lu, S / Ma, B-Q / Maiheu, B / Makins, N C R / Mao, Y / Marianski, B / Marukyan, H / Masoli, F / Mexner, V / Meyners, N / Michler, T / Mikloukho, O / Miller, C A / Miyachi, Y / Muccifora, V / Nagaitsev, A / Nappi, E / Naryshkin, Y / Nass, A / Negodaev, M / Nowak, W-D / Oganessyan, K / Ohsuga, H / Osborne, A / Pickert, N / Potterveld, D H / Raithel, M / Reggiani, D / Reimer, P E / Reischl, A / Reolon, A R / Riedl, C / Rith, K / Rosner, G / Rostomyan, A / Rubacek, L / Rubin, J / Ryckbosch, D / Salomatin, Y / Sanjiev, I / Savin, I / Schäfer, A / Schill, C / Schnell, G / Schüler, K P / Seele, J / Seidl, R / Seitz, B / Shanidze, R / Shearer, C / Shibata, T-A / Shutov, V / Sinram, K / Sommer, W / Stancari, M / Statera, M / Steffens, E / Steijger, J J M / Stenzel, H / Stewart, J / Stinzing, F / Tait, P / Tanaka, H / Taroian, S / Tchuiko, B / Terkulov, A / Trzcinski, A / Tytgat, M / Vandenbroucke, A / van der Nat, P B / van der Steenhoven, G / van Haarlem, Y / Vetterli, M C / Vikhrov, V / Vincter, M G / Vogel, C / Volmer, J / Wang, S / Wendland, J / Wilbert, J / Smit, G Ybeles / Ye, Y / Ye, Z / Yen, S / Zihlmann, B / Zupranski, P

Physical review letters

2005 Volume 94, Issue 1, Page(s) 12002

Abstract: Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion ( ... ...

Abstract	Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (phi) and the target spin axis (phi(S)) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component sin((phi+phi(S))(pi)(UT) is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component sin((phi-phi(S)(pi)(UT) arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.
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.94.012002
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Flavor decomposition of the sea-quark helicity distributions in the nucleon from semiinclusive deep inelastic scattering.

Airapetian, A / Akopov, N / Akopov, Z / Amarian, M / Ammosov, V V / Andrus, A / Aschenauer, E C / Augustyniak, W / Avakian, R / Avetissian, A / Avetissian, E / Bailey, P / Baturin, V / Baumgarten, C / Beckmann, M / Belostotski, S / Bernreuther, S / Bianchi, N / Blok, H P /

Böttcher, H / Borissov, A / Bouwhuis, M / Brack, J / Brüll, A / Bryzgalov, V / Capitani, G P / Chiang, H C / Ciullo, G / Contalbrigo, M / Dalpiaz, P F / De Leo, R / De Nardo, L / De Sanctis, E / Devitsin, E / Di Nezza, P / Düren, M / Ehrenfried, M / Elalaoui-Moulay, A / Elbakian, G / Ellinghaus, F / Elschenbroich, U / Ely, J / Fabbri, R / Fantoni, A / Fechtchenko, A / Felawka, L / Fox, B / Franz, J / Frullani, S / Gärber, Y / Gapienko, G / Gapienko, V / Garibaldi, F / Garrow, K / Garutti, E / Gaskell, D / Gavrilov, G / Gharibyan, V / Graw, G / Grebeniouk, O / Greeniaus, L G / Hafidi, K / Hartig, M / Hasch, D / Heesbeen, D / Henoch, M / Hertenberger, R / Hesselink, W H A / Hillenbrand, A / Hoek, M / Holler, Y / Hommez, B / Iarygin, G / Ivanilov, A / Izotov, A / Jackson, H E / Jgoun, A / Kaiser, R / Kinney, E / Kisselev, A / Königsmann, K / Kopytin, M / Korotkov, V / Kozlov, V / Krauss, B / Krivokhijine, V G / Lagamba, L / Lapikás, L / Laziev, A / Lenisa, P / Liebing, P / Lindemann, T / Lipka, K / Lorenzon, W / Lu, J / Maiheu, B / Makins, N C R / Marianski, B / Marukyan, H / Masoli, F / Mexner, V / Meyners, N / Mikloukho, O / Miller, C A / Miyachi, Y / Muccifora, V / Nagaitsev, A / Nappi, E / Naryshkin, Y / Nass, A / Negodaev, M / Nowak, W-D / Oganessyan, K / Ohsuga, H / Orlandi, G / Pickert, N / Potashov, S / Potterveld, D H / Raithel, M / Reggiani, D / Reimer, P E / Reischl, A / Reolon, A R / Riedl, C / Rith, K / Rosner, G / Rostomyan, A / Rubacek, L / Ryckbosch, D / Salomatin, Y / Sanjiev, I / Savin, I / Scarlett, C / Schäfer, A / Schill, C / Schnell, G / Schüler, K P / Schwind, A / Seele, J / Seidl, R / Seitz, B / Shanidze, R / Shearer, C / Shibata, T-A / Shutov, V / Simani, M C / Sinram, K / Stancari, M / Statera, M / Steffens, E / Steijger, J J M / Stewart, J / Stösslein, U / Tait, P / Tanaka, H / Taroian, S / Tchuiko, B / Terkulov, A / Tkabladze, A / Trzcinski, A / Tytgat, M / Vandenbroucke, A / Van Der Nat, P / Van Der Steenhoven, G / Vetterli, M C / Vikhrov, V / Vincter, M G / Visser, J / Vogel, C / Vogt, M / Volmer, J / Weiskopf, C / Wendland, J / Wilbert, J / Ybeles Smit, G / Yen, S / Zihlmann, B / Zohrabian, H / Zupranski, P

Physical review letters

2004 Volume 92, Issue 1, Page(s) 12005

Abstract: Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those ... ...

Abstract	Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with reanalyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data.
Language	English
Publishing date	2004-01-09
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.92.012005
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Q2 dependence of nuclear transparency for exclusive rho0 production.

Böttcher, H / Borissov, A / Bouwhuis, M / Brack, J / Brüll, A / Brunn, I / Capitani, G P / Chiang, H C / Ciullo, G / Contalbrigo, M / Court, G R / Dalpiaz, P F / De Leo, R / De Nardo, L / De Sanctis, E / Devitsin, E / Di Nezza, P / Düren, M / Ehrenfried, M / Elalaoui-Moulay, A / Elbakian, G / Ellinghaus, F / Elschenbroich, U / Ely, J / Fabbri, R / Fantoni, A / Fechtchenko, A / Felawka, L / Fox, B / Franz, J / Frullani, S / Gärber, Y / Gapienko, G / Gapienko, V / Garibaldi, F / Garutti, E / Gaskell, D / Gavrilov, G / Gharibyan, V / Graw, G / Grebeniouk, O / Greeniaus, L G / Haeberli, W / Hafidi, K / Hartig, M / Hasch, D / Heesbeen, D / Henoch, M / Hertenberger, R / Hesselink, W H A / Hillenbrand, A / Holler, Y / Hommez, B / Iarygin, G / Izotov, A / Jackson, H E / Jgoun, A / Kaiser, R / Kinney, E / Kisselev, A / Königsmann, K / Kolster, H / Kopytin, M / Korotkov, V / Kozlov, V / Krauss, B / Krivokhijine, V G / Lagamba, L / Lapikás, L / Laziev, A / Lenisa, P / Liebing, P / Lindemann, T / Lorenzon, W / Makins, N C R / Marukyan, H / Masoli, F / Menden, F / Mexner, V / Meyners, N / Mikloukho, O / Miller, C A / Miyachi, Y / Muccifora, V / Nagaitsev, A / Nappi, E / Naryshkin, Y / Nass, A / Negodaeva, K / Nowak, W-D / Oganessyan, K / Ohsuga, H / Orlandi, G / Podiatchev, S / Potashov, S / Potterveld, D H / Raithel, M / Reggiani, D / Reimer, P / Reischl, A / Reolon, A R / Rith, K / Rosner, G / Rostomyan, A / Ryckbosch, D / Sanjiev, I / Savin, I / Scarlett, C / Schäfer, A / Schill, C / Schnell, G / Schüler, K P / Schwind, A / Seibert, J / Seitz, B / Shanidze, R / Shibata, T-A / Shutov, V / Simani, M C / Sinram, K / Stancari, M / Statera, M / Steffens, E / Steijger, J J M / Stewart, J / Stösslein, U / Tanaka, H / Taroian, S / Tchuiko, B / Terkulov, A / Tessarin, S / Thomas, E / Tkabladze, A / Trzcinski, A / Tytgat, M / Urciuoli, G M / Van Der Nat, P / Van Der Steenhoven, G / Van De Vyver, R / Vetterli, M C / Vikhrov, V / Vincter, M G / Visser, J / Vogt, M / Volmer, J / Weiskopf, C / Wendland, J / Wilbert, J / Wise, T / Yen, S / Yoneyama, S / Zihlmann, B / Zohrabian, H / Zupranski, P

Physical review letters

2003 Volume 90, Issue 5, Page(s) 52501

Abstract: Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual ... ...

Abstract	Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q2). The ratio of 14N to 1H cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q2 is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.
Language	English
Publishing date	2003-02-07
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.90.052501
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Evidence for quark-hadron duality in the proton spin asymmetry A1.

Airapetian, A / Akopov, N / Akopov, Z / Amarian, M / Ammosov, V V / Aschenauer, E C / Avakian, H / Avakian, R / Avetissian, A / Avetissian, E / Bailey, P / Baturin, V / Baumgarten, C / Beckmann, M / Belostotski, S / Bernreuther, S / Bianchi, N / Blok, H P / Böttcher, H /

Borissov, A / Bouhali, O / Bouwhuis, M / Brack, J / Brauksiepe, S / Brüll, A / Brunn, I / Bulten, H J / Capitani, G P / Cisbani, E / Ciullo, G / Court, G R / Dalpiaz, P F / De Leo, R / De Nardo, L / De Sanctis, E / Devitsin, E / de Witt Huberts, P K A / Di Nezza, P / Düren, M / Ehrenfried, M / Elbakian, G / Ellinghaus, F / Elschenbroich, U / Ely, J / Fabbri, R / Fantoni, A / Fechtchenko, A / Felawka, L / Filippone, B W / Fischer, H / Fox, B / Franz, J / Frullani, S / Gärber, Y / Gapienko, V / Garibaldi, F / Garutti, E / Gavrilov, G / Gharibyan, V / Graw, G / Grebeniouk, O / Green, P W / Greeniaus, L G / Gute, A / Haeberli, W / Hafidi, K / Hartig, M / Hasch, D / Heesbeen, D / Heinsius, F H / Henoch, M / Hertenberger, R / Hesselink, W H A / Hofman, G / Holler, Y / Holt, R J / Hommez, B / Iarygin, G / Izotov, A / Jackson, H E / Jgoun, A / Jung, P / Kaiser, R / Kinney, E / Kisselev, A / Kitching, P / Königsmann, K / Kolster, H / Kopytin, M / Korotkov, V / Kotik, E / Kozlov, V / Krauss, B / Krivokhijine, V G / Kyle, G / Lagamba, L / Laziev, A / Lenisa, P / Liebing, P / Lindemann, T / Lorenzon, W / Maas, A / Makins, N C R / Marukyan, H / Masoli, F / Menden, F / Mexner, V / Meyners, N / Mikloukho, O / Miller, C A / Muccifora, V / Nagaitsev, A / Nappi, E / Naryshkin, Y / Nass, A / Negodaeva, K / Nowak, W-D / Oganessyan, K / Orlandi, G / Podiatchev, S / Potashov, S / Potterveld, D H / Raithel, M / Rappoport, V / Reggiani, D / Reimer, P / Reischl, A / Reolon, A R / Rith, K / Rostomyan, A / Ryckbosch, D / Sakemi, Y / Sanjiev, I / Sato, F / Savin, I / Scarlett, C / Schäfer, A / Schill, C / Schmidt, F / Schnell, G / Schüler, K P / Schwind, A / Seibert, J / Seitz, B / Shanidze, R / Shibata, T-A / Shutov, V / Simani, M C / Sinram, K / Stancari, M / Steffens, E / Steijger, J J M / Stewart, J / Stösslein, U / Suetsugu, K / Taroian, S / Terkulov, A / Tessarin, S / Thomas, E / Tipton, B / Tytgat, M / Urciuoli, G M / van den Brand, J F J / van der Steenhoven, G / van de Vyver, R / Vetterli, M C / Vikhrov, V / Vincter, M G / Visser, J / Volmer, J / Weiskopf, C / Wendland, J / Wilbert, J / Wise, T / Yen, S / Yoneyama, S / Zihlmann, B / Zohrabian, H

Physical review letters

2003 Volume 90, Issue 9, Page(s) 92002

Abstract: Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target ... ...

Abstract	Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q2 between 1.2 and 12 GeV2 and values of W2 between 1 and 4 GeV2. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x. This finding implies that the description of A1 in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of Q2 above 1.6 GeV2.
Language	English
Publishing date	2003-03-07
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.90.092002
Database	MEDical Literature Analysis and Retrieval System OnLINE

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