Measurement E151M1955

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:	0.62
Q²:	0.101 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.97

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	78.0	-2.8621	2.5254
0.55	270.0	-2.7517	2.3452
0.65	270.0	1.958	1.7938
0.65	282.0	-0.5486	2.3012
0.75	258.0	-1.5773	2.1588
0.75	270.0	1.0291	1.7874
0.75	282.0	0.5336	2.0193
0.85	102.0	-6.2476	3.1504
0.85	114.0	-0.1683	2.5499
0.85	126.0	-4.3436	3.0157
0.85	138.0	5.2538	2.6895
0.95	114.0	-5.1874	8.0598
0.95	126.0	-8.4657	8.4789
0.95	138.0	4.4935	7.3893
0.95	150.0	3.4164	8.5597
0.95	162.0	13.2533	9.0855
0.95	186.0	9.9775	8.2548
0.95	198.0	8.7264	7.9776
0.35	66.0	-0.3299	0.4259
0.35	78.0	-0.8628	0.4593
0.45	78.0	0.2411	0.4052
0.55	78.0	0.4171	0.4094
0.55	270.0	0.6203	0.5163
0.55	282.0	-0.1567	0.5131
0.65	258.0	-0.1104	0.5264
0.65	270.0	-0.0849	0.478
0.65	282.0	0.3719	0.3945
0.75	102.0	-0.7847	0.5464
0.75	246.0	-0.1415	0.5691
0.75	258.0	-0.7577	0.408
0.75	270.0	0.0336	0.3374
0.75	282.0	0.2906	0.4113
0.85	90.0	0.7469	0.5967
0.85	102.0	-0.5565	0.523
0.85	114.0	0.1281	0.4977
0.85	126.0	-0.21	0.4491
0.85	246.0	-0.4859	0.496
0.85	258.0	0.9336	0.4999
0.85	270.0	0.4953	0.4544
0.95	102.0	-0.6664	0.782
0.95	114.0	0.2393	0.8177
0.95	126.0	0.6278	0.7604
0.95	138.0	1.1192	0.854
0.95	150.0	0.6098	0.8619
0.95	162.0	-1.0975	0.8698
0.95	174.0	-0.0123	0.895
0.95	186.0	0.3653	0.9126

CLAS Physics Database