Beam-target double spin asymmetries and target single-spin asymmetries in exclusive $\pi^+$ and $\pi^-$ electroproduction were obtained from scattering of 1.6 to 5.7 GeV longitudinally polarized electrons from longitudinally polarized protons (for $\pi^+$) and deuterons (for $\pi^-$) using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The kinematic range covered is $1.11.5$ GeV. Very large target-spin asymmetries are observed for $W>1.6$ GeV. When combined with cross section measurements, the present results will provide powerful constraints on nucleon resonance amplitudes at moderate and large values of $Q^2$, for resonances with masses as high as 2.3 GeV.

Bosted, PE

Biselli, AS

Careccia, S

Dodge, G

Fersch, R

Guler, N

Kuhn, SE

Pierce, J

Prok, Y

Zheng, X

Adhikari, KP

Adikaram, D

Akbar, Z

Amaryan, MJ

Pereira, S Anefalos

Asryan, G

Avakian, H

Badui, RA

Ball, J

Baltzell, NA

Battaglieri, M

Batourine, V

Bedlinskiy, I

Boiarinov, S

Briscoe, WJ

Bultmann, S

Burkert, VD

Cao, T

Carman, DS

Celentano, A

Chandavar, S

Charles, G

Chetry, T

Ciullo, G

Clark, L

Colaneri, L

Cole, PL

Contalbrigo, M

Cortes, O

Crede, V

D'Angelo, A

Dashyan, N

De Vita, R

Deur, A

Djalali, C

Dupre, R

Egiyan, H

El Alaoui, A

El Fassi, L

Eugenio, P

Fanchini, E

Fedotov, G

Filippi, A

Fleming, JA

Forest, TA

Fradi, A

Garcon, M

Gevorgyan, N

Ghandilyan, Y

Gilfoyle, GP

Giovanetti, KL

Girod, FX

Gleason, C

Gohn, W

Golovatch, E

Gothe, RW

Griffioen, KA

Guo, L

Hafidi, K

Hanretty, C

Harrison, N

Hattawy, M

Heddle, D

Hicks, K

Holtrop, Maurik

Hughes, SM

Ilieva, Y

Ireland, DG

Ishkhanov, BS

Isupov, EL

Jenkins, D

Jiang, H

Jo, HS

Joo, K

Joosten, S

Keller, D

Khandaker, M

Kim, W

Klein, A

Klein, FJ

Kubarovsky, V

Kuleshov, SV

Lanza, L

Lenisa, P

Livingston, K

Lu, HY

MacGregor, IJD

Markov, N

McCracken, ME

McKinnon, B

Meyer, CA

Minehart, R

Mirazita, M

Mokeev, V

Movsisyan, A

Munevar, E

Camacho, C Munoz

Nadel-Turonski, P

Net, LA

Ni, A

Niccolai, S

Niculescu, G

Niculescu, I

Osipenko, M

Ostrovidov, AI

Paremuzyan, R

Park, K

Pasyuk, E

Peng, P

Phelps, W

Pisano, S

Pogorelko, O

Price, JW

Procureur, S

Protopopescu, D

Puckett, AJR

Raue, BA

Ripani, M

Rizzo, A

Rosner, G

Rossi, P

Roy, P

Sabatie, F

Salgado, C

Schumacher, RA

Seder, E

Sharabian, YG

Simonyan, A

Skorodumina, Iu

Smith, GD

Sparveris, N

Stankovic, Ivana

Stepanyan, S

Strakovsky, II

Strauch, S

Sytnik, V

Taiuti, M

Tian, Ye

Torayev, B

Ungaro, M

Voskanyan, H

Voutier, E

Walford, NK

Watts, DP

Wei, X

Weinstein, LB

Wood, MH

Zachariou, N

Zana, L

Zhang, J

Zhao, ZW

Zonta, I

Collaboration, CLAS

published 

November 1, 2016

Physical Review C  Journal