Measurement E151M1227

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:	0.1621
Q²:	0.0171 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.9307

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	42.0	-0.8509	0.5617	0.1005
0.55	258.0	-0.2194	0.4554	0.0389
0.55	270.0	-0.2347	0.4055	0.04
0.55	282.0	-0.1094	0.4247	0.0324
0.65	246.0	0.4168	0.4906	0.0558
0.65	258.0	-0.3216	0.3538	0.0471
0.65	270.0	0.4959	0.3481	0.0635
0.75	162.0	-0.1742	0.4636	0.0359
0.75	174.0	-0.358	0.4256	0.0503
0.75	186.0	-0.2082	0.5092	0.0381
0.75	198.0	-0.7497	0.4654	0.0897
0.75	210.0	-0.543	0.5086	0.0682
0.75	234.0	0.6098	0.4827	0.075
0.75	246.0	0.306	0.4586	0.0457
0.75	258.0	-0.1409	0.4538	0.0339
0.75	270.0	-0.2679	0.4914	0.0426
0.85	162.0	0.4577	0.4113	0.0597
0.85	174.0	-0.5244	0.3871	0.0663
0.85	186.0	0.8306	0.4792	0.0984
0.85	198.0	0.0819	0.4428	0.0314
0.85	210.0	-0.2084	0.5188	0.0381

CLAS Physics Database