Measurement E151M1878

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:	0.0493
Q²:	0.0496 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8281

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	18.0	0.3489	0.9591
0.35	78.0	-0.5759	0.9899
0.35	90.0	-0.381	0.976
0.35	102.0	0.8548	0.9817
0.35	270.0	1.4744	0.7345
0.35	294.0	-1.1245	0.8954
0.45	66.0	-1.8479	0.8443
0.45	78.0	-0.957	0.6657
0.45	90.0	-0.6724	0.8259
0.45	126.0	-0.2771	0.9325
0.45	210.0	-0.4585	0.9295
0.45	222.0	1.2757	0.7737
0.45	258.0	-0.4866	0.9203
0.45	270.0	-0.8395	0.8385
0.45	282.0	-0.9583	0.6464
0.55	78.0	0.4211	0.9565
0.55	90.0	-1.2461	0.873
0.55	114.0	0.0297	0.8966
0.55	126.0	-0.1405	0.8578
0.55	138.0	-0.4324	0.7614
0.55	198.0	0.4094	0.8601
0.55	210.0	0.0546	0.8275
0.55	222.0	-1.8295	0.7719
0.55	246.0	0.9366	0.7801
0.55	258.0	-1.5279	0.6985
0.55	270.0	-1.2174	0.5645
0.55	282.0	0.174	0.7321
0.65	78.0	-0.088	0.9068
0.65	102.0	1.3957	0.8654
0.65	114.0	0.111	0.7847
0.65	126.0	0.4921	0.7388
0.65	138.0	0.4753	0.7028
0.65	150.0	0.2337	0.8662
0.65	198.0	-0.3251	0.9331
0.65	210.0	-0.3563	0.7328
0.65	222.0	0.4059	0.6433
0.65	234.0	0.9755	0.7145
0.65	246.0	-1.0059	0.8013
0.65	270.0	-1.2853	0.8903
0.65	282.0	-0.0513	0.703
0.65	294.0	-0.195	0.9428
0.75	66.0	0.138	0.8601
0.75	78.0	1.1449	0.7297
0.75	114.0	0.3512	0.9059
0.75	126.0	0.0043	0.8547
0.75	138.0	0.5459	0.766
0.75	198.0	0.0801	0.7787
0.75	210.0	-0.0207	0.6326
0.75	222.0	-0.7851	0.6261
0.75	234.0	-0.7254	0.7483
0.75	258.0	-2.1671	0.6174
0.75	270.0	-1.0257	0.6546
0.75	282.0	0.2355	0.5859
0.75	294.0	-1.4325	0.6773
0.85	102.0	1.0124	0.8022
0.85	114.0	0.5535	0.619
0.85	126.0	1.075	0.7042
0.85	138.0	-0.1212	0.9625
0.85	186.0	-0.8244	0.9553
0.85	198.0	0.5562	0.7771
0.85	210.0	-1.1405	0.6173
0.85	222.0	0.2195	0.6341
0.85	234.0	0.0923	0.6593
0.85	246.0	-1.3066	0.6967
0.95	126.0	-0.418	0.8568
0.95	222.0	0.2386	0.7725

CLAS Physics Database