Measurement E151M1340

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:	0.1742
Q²:	0.0707 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.7364

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.2152	0.9348
0.35	30.0	0.5261	0.8971
0.35	42.0	-0.5902	0.8769
0.45	42.0	-0.6393	0.9786
0.45	258.0	-0.1491	0.9141
0.55	234.0	-0.2814	0.9557
0.55	246.0	-1.4154	0.772
0.55	258.0	0.9153	0.599
0.55	270.0	-0.1675	0.6645
0.65	138.0	0.0921	1.0118
0.65	150.0	-0.2883	0.9188
0.65	234.0	0.6815	0.6576
0.65	246.0	-0.1617	0.5721
0.65	258.0	0.9087	0.48
0.65	270.0	0.612	0.7058
0.75	138.0	0.2576	0.8462
0.75	150.0	0.4874	0.6677
0.75	162.0	0.3088	0.7138
0.75	174.0	-0.4365	0.7779
0.75	198.0	0.7194	0.831
0.75	234.0	-0.5778	0.5877
0.75	246.0	0.7154	0.5422
0.75	258.0	0.2038	0.5261
0.75	270.0	-0.2649	0.542
0.85	126.0	-0.67	0.9034
0.85	138.0	-0.2107	0.7197
0.85	150.0	-0.3308	0.7106
0.85	162.0	0.0622	0.6879
0.85	174.0	0.0454	0.7224
0.85	186.0	-0.4235	0.739
0.85	198.0	0.2263	0.8557
0.85	234.0	-0.8512	0.6167
0.85	246.0	-1.098	0.477
0.85	258.0	0.0176	0.5096
0.85	270.0	0.2476	0.4611
0.85	282.0	0.6088	0.6393
0.95	102.0	-0.4562	0.7521
0.95	114.0	0.1015	0.7775
0.95	138.0	0.8933	0.703
0.95	174.0	0.9706	0.7182
0.95	234.0	0.084	0.6316
0.95	246.0	0.8181	0.6698
0.95	258.0	-0.2723	0.5304
0.95	270.0	0.9496	0.5241

CLAS Physics Database