Measurement E151M1318

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:	0.1883
Q²:	0.0593 GeV²
W:	1325.0 GeV
E_beam:	1.0539 GeV
ε:	0.788

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	30.0	-1.0443	0.8569
0.35	42.0	0.0665	0.8287
0.55	234.0	0.0677	0.875
0.55	246.0	-0.8596	0.5642
0.55	258.0	0.074	0.5446
0.55	270.0	0.5495	0.5281
0.55	282.0	0.5986	0.8246
0.65	138.0	0.0324	0.9154
0.65	150.0	-0.1127	0.8944
0.65	222.0	-0.0681	0.8898
0.65	234.0	0.6418	0.5282
0.65	246.0	0.5934	0.5446
0.65	258.0	-0.2092	0.5001
0.65	270.0	0.5026	0.4982
0.75	126.0	-0.0826	0.7929
0.75	138.0	-0.4555	0.6251
0.75	150.0	0.2143	0.661
0.75	162.0	0.0003	0.7978
0.75	174.0	-0.4162	0.6949
0.75	186.0	0.7168	0.7125
0.75	222.0	-0.7952	0.8088
0.75	234.0	-0.7313	0.5321
0.75	246.0	0.9054	0.4592
0.75	258.0	0.1607	0.4791
0.75	270.0	0.5475	0.4848
0.75	282.0	0.3843	0.5973
0.85	126.0	-0.4996	0.6257
0.85	138.0	-0.0549	0.5736
0.85	150.0	0.7416	0.5624
0.85	162.0	1.1869	0.5281
0.85	174.0	1.1786	0.5585
0.85	186.0	0.1856	0.7443
0.85	198.0	1.1533	0.7273
0.85	222.0	0.6304	0.7475
0.85	234.0	0.8467	0.5435
0.85	246.0	-0.5218	0.4547
0.85	258.0	0.2865	0.4187
0.85	270.0	-0.432	0.3798
0.85	282.0	-0.4403	0.5162
0.95	126.0	1.2728	0.5916
0.95	138.0	-0.8259	0.5992
0.95	150.0	0.1832	0.638
0.95	162.0	0.9599	0.5778
0.95	174.0	1.9627	1.9627
0.95	186.0	2.1456	2.1456
0.95	246.0	0.0223	0.5504
0.95	258.0	-0.494	0.5318
0.95	270.0	0.1069	0.59

CLAS Physics Database