Measurement E151M1475

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:	0.0709
Q²:	0.0143 GeV²
W:	1295.0 GeV
E_beam:	1.3383 GeV
ε:	0.9232

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	234.0	0.7093	0.7317	0.051
0.65	246.0	-1.4117	0.607	0.0874
0.65	258.0	-0.5633	0.6641	0.0444
0.75	150.0	-0.1132	0.7551	0.0307
0.75	162.0	-0.411	0.9336	0.0384
0.75	174.0	0.1213	1.0027	0.0308
0.75	222.0	1.1046	0.6852	0.0709
0.75	234.0	-0.4539	0.7256	0.04
0.75	246.0	1.0073	0.5735	0.0658
0.75	258.0	-1.2559	0.5779	0.0789
0.75	270.0	0.5808	0.8547	0.0452
0.85	246.0	-0.3487	0.689	0.0362
0.85	258.0	-0.3291	0.768	0.0356
0.55	246.0	0.0153	0.697	0.03
0.65	234.0	-0.5007	0.4998	0.0424
0.65	246.0	0.6118	0.5707	0.0474
0.65	258.0	-0.7336	0.5529	0.0532
0.65	270.0	0.3198	0.6122	0.0356
0.75	150.0	0.0339	0.6596	0.0301
0.75	162.0	0.5434	0.7914	0.0443
0.75	222.0	-0.3568	0.6362	0.0368
0.75	234.0	-0.1109	0.5255	0.0307
0.75	246.0	0.0878	0.476	0.0305
0.75	258.0	-0.6751	0.5366	0.0504
0.75	270.0	1.762	0.5928	0.1098
0.85	234.0	0.4866	0.521	0.0418
0.85	246.0	0.4017	0.5332	0.0385
0.85	258.0	0.1014	0.5144	0.0306

CLAS Physics Database