Measurement E151M1776

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:	0.3289
Q²:	0.1435 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.9081

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	66.0	-2.3816	2.3816
0.25	66.0	0.1523	0.7325
0.25	294.0	1.3186	0.6408
0.35	66.0	-1.4119	0.6041
0.35	78.0	0.2517	0.7157
0.35	294.0	0.0641	0.6899
0.35	306.0	0.043	0.7761
0.45	66.0	0.4777	0.6868
0.45	78.0	0.1497	0.649
0.45	282.0	-1.3632	0.5932
0.45	294.0	-1.4866	0.5824
0.55	258.0	1.5649	0.6519
0.55	282.0	-0.1623	0.7578
0.65	102.0	0.7713	0.7029
0.65	114.0	-0.3556	0.6319
0.65	126.0	-0.275	0.8364
0.65	234.0	0.0833	0.7693
0.65	246.0	-0.0757	0.776
0.65	258.0	-0.0529	0.6696
0.65	270.0	-0.7699	0.6957
0.75	90.0	-0.1763	0.5819
0.75	102.0	-0.3864	0.5312
0.75	114.0	0.1199	0.5978
0.75	126.0	0.1895	0.5724
0.75	138.0	-0.117	0.6304
0.75	234.0	0.7157	0.6854
0.75	246.0	0.1107	0.5871
0.75	258.0	0.2393	0.5713
0.75	270.0	-0.1438	0.533
0.75	282.0	1.7039	0.6023
0.85	78.0	-1.0551	0.716
0.85	90.0	0.2882	0.832
0.85	102.0	-0.6723	0.5629
0.85	114.0	0.6392	0.4835
0.85	126.0	0.5009	0.6053
0.85	138.0	0.1376	0.6399
0.85	150.0	-0.5268	0.7429
0.85	210.0	1.316	0.6758
0.85	222.0	-0.0148	0.586
0.85	234.0	-0.0904	0.5445
0.85	246.0	-0.4824	0.5474
0.85	258.0	0.3079	0.5176
0.85	270.0	0.4992	0.488
0.85	282.0	0.6029	0.6315
0.95	78.0	0.3143	0.7068
0.95	126.0	-0.8463	0.7161
0.95	138.0	0.4776	0.6849
0.95	150.0	-0.9051	0.7054
0.95	210.0	0.4862	0.7189
0.95	222.0	-0.209	0.6077
0.95	234.0	0.5633	0.5719
0.95	246.0	-0.2709	0.5046
0.95	258.0	0.7496	0.5458
0.95	270.0	1.2663	0.3966
0.95	282.0	0.1074	0.4928

CLAS Physics Database