Measurement of the generalized form factors near threshold via $γ^* p \to nπ^+$ at high $Q^2$
Creators: name: Park, Kijun
name: Gothe, Ralf
name: Adhikari, Krishna
name: Adikaram-Mudiyanselage, Dasuni
name: Anghinolfi, Marco
name: Baghdasaryan, Hovhannes
name: Ball, Jacques
name: Battaglieri, Marco
name: Baturin, Vitaly
name: Bedlinskiy, Ivan
name: Bennett, Robert
name: Biselli, Angela
name: Bookwalter, Craig
name: Boyarinov, Sergey
name: Branford, Derek
name: Briscoe, William
name: Brooks, William
name: Burkert, Volker
name: Carman, Daniel
name: Celentano, Andrea
name: Chandavar, Shloka
name: Charles, Gabriel
name: Cole, Philip
name: Contalbrigo, Marco
name: Crede, Volker
name: D'Angelo, Annalisa
name: Daniel, Aji
name: Dashyan, Natalya
name: De Vita, Raffaella
name: De Sanctis, Enzo
name: Deur, Alexandre
name: Djalali, Chaden
name: Doughty, David
name: Dupre, Raphael
name: Alaoui, Ahmed El
name: Elfassi, Lamiaa
name: Eugenio, Paul
name: Fedotov, Gleb
name: Fradi, Ahmed
name: Gabrielyan, Marianna
name: Gevorgyan, Nerses
name: Gilfoyle, Gerard
name: Giovanetti, Kevin
name: Girod, Francois-Xavier
name: Goetz, John
name: Gohn, Wesley
name: Golovach, Evgeny
name: Graham, Lewis
name: Griffioen, Keith
name: Guidal, Michel
name: Guo, Lei
name: Hafidi, Kawtar
name: Hakobyan, Hayk
name: Hanretty, Charles
name: Heddle, David
name: Hicks, Kenneth
name: Holtrop, Maurik
name: Ilieva, Yordanka
name: Ireland, David
name: Ishkhanov, Boris
name: Isupov, Evgeny
name: Jenkins, David
name: Jo, Hyon-Suk
name: Joo, Kyungseon
name: Khandaker, Mahbubul
name: Khetarpal, Puneet
name: Kim, Andrey
name: Kim, Wooyoung
name: Klein, Andreas
name: Klein, Franz
name: Kubarovsky, A.
name: Kubarovsky, Valery
name: Kuhn, Sebastian
name: Kuleshov, Sergey
name: Kvaltine, Nicholas
name: Livingston, Kenneth
name: Lu, Haiyun
name: MacGregor, Ian
name: Markov, Nikolai
name: Mayer, Michael
name: McKinnon, Bryan
name: Mestayer, Mac
name: Meyer, Curtis
name: Mineeva, Taisiya
name: Mirazita, Marco
name: Mokeev, Viktor
name: Moutarde, Herve
name: Espitia, Edwin Munevar
name: Nadel-Turonski, Pawel
name: Nasseripour, Rakhsha
name: Niccolai, Silvia
name: Niculescu, Gabriel
name: Niculescu, Maria-Ioana
name: Osipenko, Mikhail
name: Ostrovidov, Alexander
name: Paolone, Michael
name: Pappalardo, Luciano
name: Paremuzyan, Rafayel
name: Park, Seungkyung
name: Pereira, Sergio
name: Phelps, Evan
name: Pisano, Silvia
name: Pogorelko, Oleg
name: Pozdnyakov, Sergey
name: Price, John
name: Procureur, Sebastien
name: Prok, Yelena
name: Ricco, Giovanni
name: Rimal, Dipak
name: Ripani, Marco
name: Ritchie, Barry
name: Rosner, Guenther
name: Rossi, Patrizia
name: Sabatie, Franck
name: Saini, Mukesh
name: Salgado, Carlos
name: Schott, Diane
name: Schumacher, Reinhard
name: Seraydaryan, Heghine
name: Sharabian, Youri
name: Smith, Elton
name: Smith, Gregory
name: Sober, Daniel
name: Sokhan, Daria
name: Stepanyan, Samuel
name: Stepanyan, Stepan
name: Stoler, Paul
name: Strakovski, Igor
name: Strauch, Steffen
name: Taiuti, Mauro
name: Tang, Wei
name: Taylor, Charles
name: Tian, Ye
name: Tkachenko, Svyatoslav
name: Trivedi, Arjun
name: Ungaro, Maurizio
name: Vernarsky, Brian
name: Vlasov, Alexander
name: Voutier, Eric
name: Watts, Daniel
name: Weygand, Dennis
name: Wood, Michael
name: Zachariou, Nicholas
name: Zhao, Bo
name: Zhao, Zhiwen
name: Kalantarians, N.
name: Hyde, C. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report the first extraction of the pion-nucleon multipoles near the production threshold for the $nπ^+$ 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 $4π$ CEBAF Large Acceptance Spectrometer (CLAS) using a 5.754 $\rm{GeV}$ electron beam on a proton target. The differential cross section and the $π-N$-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.
description: 17pages, 22 figures, Journal article (Physical Review C)