Measurement E151M1841

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:	0.2637
Q²:	0.2445 GeV²
W:	1505.0 GeV
E_beam:	1.9889 GeV
ε:	0.8129

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	-0.1366	0.8122
0.35	282.0	0.2047	0.7292
0.35	294.0	-0.9028	0.7036
0.55	102.0	-0.9146	0.7807
0.65	102.0	1.8273	0.6383
0.65	114.0	0.7219	0.7211
0.65	126.0	-1.2404	0.7534
0.65	138.0	-0.6141	0.7594
0.65	234.0	0.3074	0.768
0.75	102.0	1.4251	0.5577
0.75	114.0	0.8495	0.677
0.75	210.0	-1.1163	0.7275
0.75	234.0	1.9533	0.5702
0.75	246.0	0.4135	0.7062
0.75	258.0	0.8258	0.7671
0.85	66.0	-0.308	0.7715
0.85	78.0	0.7263	0.6326
0.85	114.0	0.2076	0.7454
0.85	126.0	-0.7385	0.757
0.85	234.0	0.5307	0.7388
0.85	246.0	-0.2067	0.509
0.85	258.0	-0.116	0.6471
0.85	270.0	0.7678	0.6228
0.95	234.0	0.3993	0.6206
0.95	246.0	-0.0464	0.7016
0.95	258.0	1.0282	0.5399
0.95	270.0	-0.0399	0.6191
0.95	282.0	0.3622	0.5164
0.95	294.0	0.1514	0.627

CLAS Physics Database