Measurement E151M2174

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:	1.0557
Q²:	0.2445 GeV²
W:	1235.0 GeV
E_beam:	2.999 GeV
ε:	0.9697

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	66.0	-0.5021	0.6555
0.25	66.0	-0.543	0.4288
0.35	66.0	0.7031	0.5064
0.35	78.0	-0.0965	0.8012
0.35	282.0	-0.8298	0.5601
0.35	294.0	1.0683	0.7021
0.45	66.0	0.6864	0.5404
0.45	282.0	0.169	0.5341
0.45	294.0	-1.1346	0.5133
0.55	78.0	-1.0993	0.7287
0.55	270.0	-0.2133	0.6143
0.55	282.0	0.1135	0.4122
0.55	294.0	-0.0015	0.4361
0.65	66.0	-0.0982	0.7562
0.65	78.0	-0.4245	0.6152
0.65	90.0	1.2958	0.5536
0.65	270.0	-0.2987	0.4322
0.65	282.0	-0.4449	0.3706
0.65	294.0	0.2051	0.4079
0.65	306.0	1.706	0.5014
0.75	66.0	0.6388	0.4704
0.75	78.0	-0.3483	0.4726
0.75	90.0	-0.5249	0.4288
0.75	102.0	-0.2379	0.5104
0.75	258.0	0.3677	0.5565
0.75	270.0	-0.3943	0.4197
0.75	282.0	0.2664	0.364
0.75	294.0	0.1085	0.4284
0.75	306.0	0.0393	0.6324
0.85	54.0	-0.2174	0.599
0.85	66.0	-0.4575	0.4293
0.85	78.0	0.3191	0.3694
0.85	90.0	-0.0424	0.4049
0.85	102.0	0.1585	0.4279
0.85	114.0	1.2459	0.4866
0.85	246.0	0.0905	0.6417
0.85	258.0	-0.2633	0.4767
0.85	270.0	0.8267	0.4417
0.85	282.0	-0.0691	0.4644
0.85	294.0	-0.0047	0.4105
0.85	306.0	0.9727	0.5077
0.95	42.0	0.3089	0.5319
0.95	54.0	-0.2017	0.5136
0.95	66.0	0.2302	0.5051
0.95	78.0	0.0553	0.4164
0.95	90.0	-0.2073	0.4806
0.95	102.0	-0.1203	0.55
0.95	114.0	0.8799	0.4048
0.95	126.0	-0.1391	0.5565
0.95	150.0	0.2078	0.7914
0.95	246.0	0.4407	0.7115
0.95	258.0	0.0128	0.6358
0.95	270.0	-0.1011	0.5766
0.95	282.0	-0.5331	0.6311
0.95	294.0	0.4893	0.6165
0.95	306.0	0.6219	0.654

CLAS Physics Database