Measurement E151M27

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_UL
ε_L:	0.1741
Q²:	0.0245 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9058

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.15	42.0	0.595	0.5328
0.15	54.0	-0.1818	0.5968
0.25	30.0	0.9051	0.5127
0.25	42.0	-0.6356	0.3764
0.25	54.0	0.171	0.44
0.35	30.0	-0.1647	0.5387
0.35	42.0	0.1936	0.4156
0.35	54.0	0.6909	0.3789
0.45	42.0	0.6764	0.4113
0.45	54.0	0.4855	0.4653
0.45	66.0	-0.1456	0.5623
0.45	270.0	-0.5412	0.3783
0.45	282.0	-0.6941	0.3323
0.55	246.0	0.1223	0.3805
0.55	258.0	0.1732	0.2765
0.55	270.0	-0.0229	0.2927
0.55	282.0	-0.2403	0.3205
0.65	234.0	0.479	0.4008
0.65	246.0	-0.4032	0.2894
0.65	258.0	0.1132	0.2488
0.65	270.0	-0.2981	0.2228
0.65	282.0	0.1424	0.3234
0.75	126.0	0.3539	0.5503
0.75	138.0	-0.0201	0.4503
0.75	150.0	0.3047	0.3968
0.75	162.0	-0.0847	0.3531
0.75	174.0	0.3712	0.3467
0.75	186.0	0.1414	0.4292
0.75	198.0	-1.2499	0.2614
0.75	210.0	-0.0439	0.3784
0.75	222.0	-0.89	0.3541
0.75	234.0	-0.1931	0.3234
0.75	246.0	-0.0654	0.2746
0.75	258.0	-0.1417	0.231
0.75	270.0	0.0925	0.236
0.75	282.0	-0.6867	0.3561
0.85	138.0	-0.0205	0.4604
0.85	150.0	-0.548	0.311
0.85	162.0	-0.4713	0.3084
0.85	174.0	-0.4029	0.292
0.85	186.0	0.027	0.3156
0.85	198.0	0.1303	0.3808
0.85	210.0	-0.2771	0.3935
0.85	222.0	0.5812	0.4131
0.85	234.0	0.6722	0.3581
0.85	246.0	0.2316	0.4744
0.85	258.0	0.0966	0.3093
0.85	270.0	-0.0114	0.4077

CLAS Physics Database