Exclusive π0 electroproduction at W>2 GeV with CLAS

Bedlinskiy, I.; Kubarovsky, V.; Niccolai, S.; Stoler, P.; Adhikari, K. P.; Anderson, M. D.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Batourine, V.; Biselli, A. S.; Boiarinov, S.; Bono, J.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Celentano, A.; Chandavar, S.; Colaneri, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fleming, J. A.; Forest, T. A.; Garillon, B.; Garçon, M.; Gavalian, G.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guegan, B.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Harrison, N.; Hattawy, M.; Hicks, K.; Holtrop, M.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; H. S., Jo; Joo, K.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Koirala, S.; Kuhn, S. E.; Kuleshov, S. V.; Lenisa, P.; Levine, W. I.; Livingston, K.; H. Y., Lu; Macgregor, I. J. D.; Markov, N.; Mayer, M.; Mckinnon, B.; Mirazita, M.; Mokeev, V.; Montgomery, R. A.; Moody, C. I.; Moutarde, H.; Movsisyan, A.; Munoz Camacho, C.; Nadel-Turonski, P.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Pappalardo, L. L.; Park, K.; Park, S.; Pasyuk, E.; Phelps, E.; Phelps, W.; Phillips, J. J.; Pisano, S.; Pogorelko, O.; Price, J. W.; Prok, Y.; Protopopescu, D.; Procureur, S.; Puckett, A. J. R.; Raue, B. A.; Ripani, M.; Ritchie, B. G.; Rizzo, A.; Rossi, P.; Roy, P.; Sabatié, F.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seder, E.; Senderovich, I.; Sharabian, Y. G.; Simonyan, A.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Stepanyan, S. S.; Strauch, S.; Sytnik, V.; Tang, W.; Tian, Ye; Ungaro, M.; Vlassov, A. V.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D.; Wei, X.; Weinstein, L. B.; Yurov, M.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.

doi:10.1103/PhysRevC.90.025205

Exclusive neutral-pion electroproduction (ep→e′p′π0) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdϕπ and structure functions σT+εσL,σTT, and σLT as functions of t were obtained over a wide range of Q2 and xB. The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.

Exclusive π0 electroproduction at W>2 GeV with CLAS

Bedlinskiy, I.;Kubarovsky, V.;Niccolai, S.;Stoler, P.;Adhikari, K. P.;Anderson, M. D.;Anefalos Pereira, S.;Avakian, H.;Ball, J.;Baltzell, N. A.;Battaglieri, M.;Batourine, V.;Biselli, A. S.;Boiarinov, S.;Bono, J.;Briscoe, W. J.;Brooks, W. K.;Burkert, V. D.;Carman, D. S.;Celentano, A.;Chandavar, S.;Colaneri, L.;Cole, P. L.;Contalbrigo, M.;Cortes, O.;Crede, V.;D'Angelo, A.;Dashyan, N.;De Vita, R.;De Sanctis, E.;Deur, A.;Djalali, C.;Doughty, D.;Dupre, R.;Egiyan, H.;El Alaoui, A.;El Fassi, L.;Elouadrhiri, L.;Eugenio, P.;Fedotov, G.;Fegan, S.;Fleming, J. A.;Forest, T. A.;Garillon, B.;Garçon, M.;Gavalian, G.;Gevorgyan, N.;Ghandilyan, Y.;Gilfoyle, G. P.;Giovanetti, K. L.;Girod, F. X.;Golovatch, E.;Gothe, R. W.;Griffioen, K. A.;Guegan, B.;Guidal, M.;Guo, L.;Hafidi, K.;Hakobyan, H.;Harrison, N.;Hattawy, M.;Hicks, K.;Holtrop, M.;Ireland, D. G.;Ishkhanov, B. S.;Isupov, E. L.;Jenkins, D.;Jo, H. S.;Joo, K.;Keller, D.;Khandaker, M.;Kim, A.;Kim, W.;Klein, A.;Klein, F. J.;Koirala, S.;Kuhn, S. E.;Kuleshov, S. V.;Lenisa, P.;Levine, W. I.;Livingston, K.;Lu, H. Y.;MacGregor, I. J. D.;Markov, N.;Mayer, M.;McKinnon, B.;Mirazita, M.;Mokeev, V.;Montgomery, R. A.;Moody, C. I.;Moutarde, H.;Movsisyan, A.;Munoz Camacho, C.;Nadel-Turonski, P.;Niculescu, I.;Osipenko, M.;Ostrovidov, A. I.;Pappalardo, L. L.;Park, K.;Park, S.;Pasyuk, E.;Phelps, E.;Phelps, W.;Phillips, J. J.;Pisano, S.;Pogorelko, O.;Price, J. W.;Prok, Y.;Protopopescu, D.;Procureur, S.;Puckett, A. J. R.;Raue, B. A.;Ripani, M.;Ritchie, B. G.;Rizzo, A.;Rossi, P.;Roy, P.;Sabatié, F.;Salgado, C.;Schott, D.;Schumacher, R. A.;Seder, E.;Senderovich, I.;Sharabian, Y. G.;Simonyan, A.;Smith, G. D.;Sober, D. I.;Sokhan, D.;Stepanyan, S. S.;Strauch, S.;Sytnik, V.;Tang, W.;Tian, Ye;Ungaro, M.;Vlassov, A. V.;Voskanyan, H.;Voutier, E.;Walford, N. K.;Watts, D.;Wei, X.;Weinstein, L. B.;Yurov, M.;Zachariou, N.;Zana, L.;Zhang, J.;Zhao, Z. W.;Zonta, I.

2014

Abstract

Exclusive neutral-pion electroproduction (ep→e′p′π0) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdϕπ and structure functions σT+εσL,σTT, and σLT as functions of t were obtained over a wide range of Q2 and xB. The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.

Scheda breve

Scheda completa

Scheda completa (DC)

	Anno di pubblicazione
	
			2014
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevC.90.025205
		
	Titolo della Rivista
	
			PHYSICAL REVIEW. C, NUCLEAR PHYSICS
		
	Tutti gli autori
	
			Bedlinskiy, I.; Kubarovsky, V.; Niccolai, S.; Stoler, P.; Adhikari, K. P.; Anderson, M. D.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Batourine, V.; Biselli, A. S.; Boiarinov, S.; Bono, J.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Celentano, A.; Chandavar, S.; Colaneri, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fleming, J. A.; Forest, T. A.; Garillon, B.; Garçon, M.; Gavalian, G.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guegan, B.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Harrison, N.; Hattawy, M.; Hicks, K.; Holtrop, M.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Koirala, S.; Kuhn, S. E.; Kuleshov, S. V.; Lenisa, P.; Levine, W. I.; Livingston, K.; Lu, H. Y.; Macgregor, I. J. D.; Markov, N.; Mayer, M.; Mckinnon, B.; Mirazita, M.; Mokeev, V.; Montgomery, R. A.; Moody, C. I.; Moutarde, H.; Movsisyan, A.; Munoz Camacho, C.; Nadel-Turonski, P.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Pappalardo, L. L.; Park, K.; Park, S.; Pasyuk, E.; Phelps, E.; Phelps, W.; Phillips, J. J.; Pisano, S.; Pogorelko, O.; Price, J. W.; Prok, Y.; Protopopescu, D.; Procureur, S.; Puckett, A. J. R.; Raue, B. A.; Ripani, M.; Ritchie, B. G.; Rizzo, A.; Rossi, P.; Roy, P.; Sabatié, F.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seder, E.; Senderovich, I.; Sharabian, Y. G.; Simonyan, A.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Stepanyan, S. S.; Strauch, S.; Sytnik, V.; Tang, W.; Tian, Ye; Ungaro, M.; Vlassov, A. V.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D.; Wei, X.; Weinstein, L. B.; Yurov, M.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.
		
	Appare nelle tipologie:
	
			03.1 Articolo su rivista

File in questo prodotto:

Non ci sono file associati a questo prodotto.

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2396970

Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni

ND

40

35

SFERA Archivio dei prodotti della Ricerca dell'Università di Ferrara

Exclusive π0 electroproduction at W>2 GeV with CLAS

2014

Abstract

Scheda breve

Scheda completa

Scheda completa (DC)

Attenzione

Citazioni

social impact

SFERA Archivio dei prodotti della Ricerca dell'Università di Ferrara

Exclusive π0 electroproduction at W>2 GeV with CLAS

2014

Abstract

Scheda breve Scheda completa Scheda completa (DC)

Informazioni

Attenzione

Citazioni

social impact

Conferma cancellazione

Scheda breve

Scheda completa

Scheda completa (DC)