Measurement E151M539

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:	0.3844
Q²:	0.1435 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.9189

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	66.0	0.6445	0.613
0.25	294.0	-1.0759	0.3984
0.35	66.0	-0.8389	0.5408
0.35	78.0	0.9405	0.6213
0.45	78.0	0.1956	0.5116
0.45	294.0	-0.7349	0.4928
0.55	66.0	0.1778	0.5486
0.55	78.0	-0.2809	0.5929
0.55	282.0	-1.3286	0.4442
0.65	90.0	0.8696	0.6964
0.65	102.0	0.3538	0.6005
0.65	114.0	-0.0054	0.5562
0.65	246.0	-0.1625	0.6058
0.65	258.0	-0.3472	0.4543
0.65	270.0	-0.0437	0.4366
0.65	282.0	0.8272	0.7814
0.75	90.0	0.4843	0.5508
0.75	102.0	0.2188	0.4062
0.75	114.0	-0.4155	0.4061
0.75	126.0	-0.2086	0.5003
0.75	138.0	-0.8014	0.5153
0.75	222.0	0.0668	0.6002
0.75	234.0	0.8036	0.6031
0.75	246.0	-0.7153	0.3584
0.75	258.0	0.3668	0.4265
0.75	270.0	-0.7293	0.3796
0.75	282.0	-0.348	0.6275
0.75	294.0	0.679	0.67
0.85	90.0	1.1942	0.5448
0.85	102.0	0.0934	0.4046
0.85	114.0	0.754	0.4642
0.85	126.0	0.3634	0.4181
0.85	138.0	-0.6389	0.4243
0.85	150.0	1.19	0.6748
0.85	162.0	-0.1336	0.6929
0.85	222.0	0.2275	0.4905
0.85	234.0	-0.3012	0.4237
0.85	246.0	0.2071	0.4498
0.85	258.0	0.0164	0.4345
0.85	270.0	-0.8772	0.2852
0.85	282.0	-0.8914	0.2848
0.85	294.0	0.3709	0.5876
0.95	78.0	-0.0557	0.5692
0.95	102.0	-0.6059	0.5007
0.95	114.0	0.3048	0.5392
0.95	126.0	-0.2448	0.4693
0.95	138.0	-0.5019	0.5046
0.95	150.0	-0.2735	0.5573
0.95	222.0	0.0059	0.4821
0.95	234.0	0.4131	0.542
0.95	246.0	-0.2021	0.4146
0.95	258.0	-0.7897	0.3253
0.95	270.0	0.2683	0.426
0.95	282.0	0.3459	0.4041

CLAS Physics Database