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	syst. uncert.
0.45	78.0	-0.1465	0.5048	0.0313
0.55	78.0	1.1579	0.4694	0.0763
0.55	90.0	0.3278	0.4873	0.036
0.55	270.0	0.267	0.5945	0.0341
0.65	90.0	0.3953	0.6178	0.0384
0.65	246.0	0.5258	0.5836	0.0438
0.65	258.0	-0.4697	0.4266	0.0414
0.65	270.0	0.8591	0.4777	0.0601
0.75	114.0	-0.3274	0.6068	0.036
0.75	126.0	-0.4344	0.5594	0.0399
0.75	138.0	0.0736	0.5312	0.0303
0.75	234.0	0.4793	0.6235	0.0418
0.75	246.0	-0.0584	0.4351	0.0302
0.75	258.0	0.4158	0.417	0.0392
0.75	270.0	-0.0356	0.4147	0.0301
0.85	114.0	0.4	0.5287	0.0386
0.85	126.0	0.0757	0.4216	0.0303
0.85	138.0	-0.3772	0.4189	0.0377
0.85	150.0	-0.4177	0.4137	0.0392
0.85	162.0	-1.2164	0.3931	0.0796
0.85	174.0	-0.2142	0.4622	0.0327
0.85	186.0	0.3129	0.5527	0.0355
0.85	234.0	0.7513	0.5007	0.0545
0.85	246.0	0.4007	0.4688	0.0386
0.85	258.0	-0.3082	0.5582	0.0353
0.95	126.0	-0.1976	0.5512	0.0323
0.95	150.0	-0.237	0.4877	0.0333
0.95	162.0	0.2346	0.4935	0.0332
0.95	174.0	0.3219	0.577	0.0358
0.95	186.0	0.6963	0.4732	0.0518

CLAS Physics Database