Measurement E151M1378

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.0732
Q²:	0.0415 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.6773

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	0.2637	0.8139
0.25	54.0	-0.1573	0.9208
0.35	42.0	-0.1327	0.7093
0.35	54.0	0.9336	0.7861
0.45	30.0	0.408	0.8427
0.45	42.0	0.3211	0.6965
0.45	54.0	-0.2436	0.8429
0.45	66.0	-0.5599	1.022
0.45	246.0	0.4751	0.93
0.45	258.0	-0.8368	0.7259
0.55	42.0	0.0568	1.0221
0.55	54.0	-1.0889	0.7429
0.55	222.0	0.7975	0.77
0.55	234.0	0.6019	0.6688
0.55	246.0	1.0602	0.6526
0.55	258.0	-0.4743	0.7049
0.55	270.0	-0.6045	0.8576
0.65	138.0	-0.4276	0.9584
0.65	150.0	-1.3059	0.7738
0.65	162.0	-0.4872	0.8717
0.65	186.0	0.8576	0.9097
0.65	210.0	-1.0959	0.9378
0.65	222.0	0.1598	0.7314
0.65	234.0	0.1427	0.5619
0.65	246.0	-0.1088	0.4918
0.65	258.0	0.0532	0.5018
0.65	270.0	1.1139	0.8317
0.75	138.0	0.8334	0.8664
0.75	150.0	-0.3433	0.8392
0.75	162.0	0.9861	0.8238
0.75	174.0	-1.1686	0.9471
0.75	186.0	0.336	0.8719
0.75	222.0	-1.0116	0.6409
0.75	234.0	-0.8096	0.5381
0.75	246.0	0.1529	0.5835
0.75	258.0	-0.0153	0.5342
0.75	270.0	-0.0694	0.67
0.85	150.0	-0.047	0.7945
0.85	222.0	-0.6897	0.7054
0.85	234.0	-0.2869	0.6345
0.85	246.0	0.5897	0.4826
0.85	258.0	0.6602	0.6138
0.85	270.0	0.6553	0.6196
0.95	234.0	0.1157	0.6995
0.95	246.0	-0.4012	0.6221
0.95	258.0	0.9352	0.6857

CLAS Physics Database