Measurement E151M1415

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:	0.0459
Q²:	0.0415 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5602

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	54.0	-0.1701	0.8186	0.0356
0.35	54.0	-0.3029	0.731	0.0455
0.35	66.0	0.22	0.9577	0.0389
0.45	54.0	-0.6811	0.7201	0.0825
0.45	66.0	-0.9191	0.7461	0.1079
0.45	234.0	-0.9796	0.7659	0.1145
0.45	246.0	-0.59	0.6935	0.073
0.45	258.0	-0.519	0.7514	0.0658
0.55	42.0	0.031	0.8339	0.0302
0.55	222.0	0.1995	0.7282	0.0375
0.55	234.0	-1.4087	0.685	0.1617
0.55	246.0	0.7077	0.6092	0.0853
0.55	258.0	-1.1173	0.674	0.1295
0.65	162.0	-0.5346	0.7617	0.0673
0.65	174.0	-2.4322	2.4322	0.276
0.65	234.0	-0.241	0.6018	0.0405
0.65	246.0	-0.4983	0.6045	0.0637
0.65	258.0	0.1143	0.6073	0.0327
0.65	270.0	-1.3763	0.7118	0.1581
0.75	162.0	0.0894	0.8323	0.0317
0.75	174.0	-0.9399	0.8566	0.1102
0.75	222.0	-0.4511	0.7663	0.0591
0.75	234.0	-0.1948	0.5917	0.0372
0.75	246.0	0.5228	0.6041	0.0662
0.75	258.0	-0.2199	0.6257	0.0389
0.85	222.0	0.3809	0.7146	0.0524
0.85	234.0	0.474	0.6775	0.0613
0.85	246.0	-0.1827	0.5552	0.0364
0.85	258.0	0.5121	0.6058	0.0651

CLAS Physics Database