Measurement E151M1696

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:	0.352
Q²:	0.0496 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9717

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	78.0	-0.1465	0.5048
0.55	78.0	1.1579	0.4694
0.55	90.0	0.3278	0.4873
0.55	270.0	0.267	0.5945
0.65	90.0	0.3953	0.6178
0.65	246.0	0.5258	0.5836
0.65	258.0	-0.4697	0.4266
0.65	270.0	0.8591	0.4777
0.75	114.0	-0.3274	0.6068
0.75	126.0	-0.4344	0.5594
0.75	138.0	0.0736	0.5312
0.75	234.0	0.4793	0.6235
0.75	246.0	-0.0584	0.4351
0.75	258.0	0.4158	0.417
0.75	270.0	-0.0356	0.4147
0.85	114.0	0.4	0.5287
0.85	126.0	0.0757	0.4216
0.85	138.0	-0.3772	0.4189
0.85	150.0	-0.4177	0.4137
0.85	162.0	-1.2164	0.3931
0.85	174.0	-0.2142	0.4622
0.85	186.0	0.3129	0.5527
0.85	234.0	0.7513	0.5007
0.85	246.0	0.4007	0.4688
0.85	258.0	-0.3082	0.5582
0.95	126.0	-0.1976	0.5512
0.95	150.0	-0.237	0.4877
0.95	162.0	0.2346	0.4935
0.95	174.0	0.3219	0.577
0.95	186.0	0.6963	0.4732

CLAS Physics Database