التفاصيل البيبلوغرافية
العنوان:
Measurement of the generalized form factors near threshold via $\gamma^* p \to n\pi^+$ at high $Q^2$
المؤلفون:
Park, Kijun , Gothe, Ralf , Adhikari, Krishna , Adikaram-Mudiyanselage, Dasuni , Anghinolfi, Marco , Baghdasaryan, Hovhannes , Ball, Jacques , Battaglieri, Marco , Baturin, Vitaly , Bedlinskiy, Ivan , Bennett, Robert , Biselli, Angela , Bookwalter, Craig , Boyarinov, Sergey , Branford, Derek , Briscoe, William , Brooks, William , Burkert, Volker , Carman, Daniel , Celentano, Andrea , Chandavar, Shloka , Charles, Gabriel , Cole, Philip , Contalbrigo, Marco , Crede, Volker , D'Angelo, Annalisa , Daniel, Aji , Dashyan, Natalya , De Vita, Raffaella , De Sanctis, Enzo , Deur, Alexandre , Djalali, Chaden , Doughty, David , Dupre, Raphael , Alaoui, Ahmed El , Elfassi, Lamiaa , Eugenio, Paul , Fedotov, Gleb , Fradi, Ahmed , Gabrielyan, Marianna , Gevorgyan, Nerses , Gilfoyle, Gerard , Giovanetti, Kevin , Girod, Francois-Xavier , Goetz, John , Gohn, Wesley , Golovach, Evgeny , Graham, Lewis , Griffioen, Keith , Guidal, Michel , Guo, Lei , Hafidi, Kawtar , Hakobyan, Hayk , Hanretty, Charles , Heddle, David , Hicks, Kenneth , Holtrop, Maurik , Ilieva, Yordanka , Ireland, David , Ishkhanov, Boris , Isupov, Evgeny , Jenkins, David , Jo, Hyon-Suk , Joo, Kyungseon , Khandaker, Mahbubul , Khetarpal, Puneet , Kim, Andrey , Kim, Wooyoung , Klein, Andreas , Klein, Franz , Kubarovsky, A. , Kubarovsky, Valery , Kuhn, Sebastian , Kuleshov, Sergey , Kvaltine, Nicholas , Livingston, Kenneth , Lu, Haiyun , MacGregor, Ian , Markov, Nikolai , Mayer, Michael , McKinnon, Bryan , Mestayer, Mac , Meyer, Curtis , Mineeva, Taisiya , Mirazita, Marco , Mokeev, Viktor , Moutarde, Herve , Espitia, Edwin Munevar , Nadel-Turonski, Pawel , Nasseripour, Rakhsha , Niccolai, Silvia , Niculescu, Gabriel , Niculescu, Maria-Ioana , Osipenko, Mikhail , Ostrovidov, Alexander , Paolone, Michael , Pappalardo, Luciano , Paremuzyan, Rafayel , Park, Seungkyung , Pereira, Sergio , Phelps, Evan , Pisano, Silvia , Pogorelko, Oleg , Pozdnyakov, Sergey , Price, John , Procureur, Sebastien , Prok, Yelena , Ricco, Giovanni , Rimal, Dipak , Ripani, Marco , Ritchie, Barry , Rosner, Guenther , Rossi, Patrizia , Sabatie, Franck , Saini, Mukesh , Salgado, Carlos , Schott, Diane , Schumacher, Reinhard , Seraydaryan, Heghine , Sharabian, Youri , Smith, Elton , Smith, Gregory , Sober, Daniel , Sokhan, Daria , Stepanyan, Samuel , Stepanyan, Stepan , Stoler, Paul , Strakovski, Igor , Strauch, Steffen , Taiuti, Mauro , Tang, Wei , Taylor, Charles , Tian, Ye , Tkachenko, Svyatoslav , Trivedi, Arjun , Ungaro, Maurizio , Vernarsky, Brian , Vlasov, Alexander , Voutier, Eric , Watts, Daniel , Weygand, Dennis , Wood, Michael , Zachariou, Nicholas , Zhao, Bo , Zhao, Zhiwen , Kalantarians, N. , Hyde, C. E.
سنة النشر:
2012
المجموعة:
Nuclear Experiment
مصطلحات موضوعية:
Nuclear Experiment
الوصف:
We report the first extraction of the pion-nucleon multipoles near the production threshold for the $n\pi^+$ channel at relatively high momentum transfer ($Q^2$ up to 4.2 $\rm{GeV^2}$). The dominance of the s-wave transverse multipole ($E_{0+}$), expected in this region, allowed us to access the generalized form factor $G_1$ within the light-cone sum rule (LCSR) framework as well as the axial form factor $G_A$. The data analyzed in this work were collected by the nearly $4\pi$ CEBAF Large Acceptance Spectrometer (CLAS) using a 5.754 $\rm{GeV}$ electron beam on a proton target. The differential cross section and the $\pi-N$-multipole $E_{0+}/G_D$ were measured using two different methods, the LCSR and a direct multipole fit. The results from the two methods are found to be consistent and almost $Q^2$ independent.
نوع الوثيقة:
Working Paper
DOI:
10.1103/PhysRevC.85.035208
URL الوصول:
http://arxiv.org/abs/1201.0903
رقم الأكسشن:
edsarx.1201.0903
قاعدة البيانات:
arXiv
