Measurement E151M542

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:	0.5316
Q²:	0.2445 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8892

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.35	66.0	-0.3538	0.4841
0.55	270.0	-0.3846	0.6381
0.65	102.0	-0.2513	0.5728
0.65	270.0	-0.6583	0.5193
0.75	78.0	-0.3216	0.6326
0.75	90.0	0.4134	0.5939
0.75	102.0	-0.112	0.4728
0.75	114.0	0.0736	0.6321
0.75	234.0	0.0091	0.6591
0.75	246.0	0.5043	0.6417
0.75	258.0	0.3235	0.5408
0.75	270.0	-0.6879	0.4336
0.75	282.0	-0.143	0.5325
0.75	294.0	-0.5088	0.4795
0.85	90.0	0.5685	0.4845
0.85	102.0	1.3122	0.4881
0.85	114.0	-0.4812	0.4879
0.85	126.0	0.8341	0.6806
0.85	138.0	0.6942	0.6468
0.85	222.0	-0.6386	0.5429
0.85	234.0	-0.2649	0.5149
0.85	246.0	-0.0147	0.4852
0.85	258.0	-0.4168	0.4863
0.85	270.0	-1.2704	0.4086
0.85	282.0	0.1473	0.4507
0.85	294.0	1.8461	0.4135
0.85	306.0	0.7537	0.7101
0.95	102.0	-0.4276	0.5712
0.95	114.0	-0.2945	0.5287
0.95	126.0	0.9526	0.5857
0.95	246.0	0.0868	0.5542
0.95	258.0	0.6697	0.4403
0.95	270.0	-0.4426	0.4856
0.95	282.0	-1.0901	0.337
0.95	294.0	-0.2273	0.5221

CLAS Physics Database