Measurement E151M1375

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:	0.0458
Q²:	0.0245 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.6987

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	0.1266	0.7974
0.25	54.0	0.6788	0.9246
0.35	30.0	-0.0259	0.8229
0.35	42.0	-0.4191	0.7067
0.35	54.0	-0.6661	0.6493
0.45	18.0	-0.5753	0.9492
0.45	30.0	-0.4628	0.8007
0.45	42.0	-1.3033	0.5707
0.45	54.0	0.2998	0.6482
0.45	222.0	0.1072	0.804
0.45	234.0	-0.2948	0.6974
0.45	246.0	-0.8039	0.8802
0.55	30.0	-0.7772	0.8696
0.55	42.0	-0.7771	0.6497
0.55	54.0	-0.4	0.5998
0.55	138.0	0.632	0.928
0.55	150.0	-0.2039	0.8381
0.55	210.0	-0.6325	0.8923
0.55	222.0	-0.0387	0.6759
0.55	234.0	-0.8146	0.5554
0.55	246.0	0.3755	0.5833
0.55	258.0	-0.8948	0.5363
0.65	138.0	0.1257	0.8188
0.65	150.0	0.1119	0.7758
0.65	162.0	0.8183	0.81
0.65	174.0	-0.7319	0.9177
0.65	210.0	0.2292	0.8823
0.65	222.0	-0.012	0.6347
0.65	234.0	-0.274	0.5509
0.65	246.0	0.9601	0.4843
0.65	258.0	-0.3193	0.509
0.75	150.0	-1.513	0.7314
0.75	162.0	-0.6165	0.7198
0.75	174.0	-0.4066	0.7787
0.75	210.0	0.1411	0.8931
0.75	222.0	0.8332	0.6365
0.75	234.0	-1.1633	0.5599
0.75	246.0	0.078	0.4569
0.75	258.0	0.413	0.5427
0.75	270.0	-0.8061	0.8425
0.85	222.0	-0.1742	0.6375
0.85	234.0	-0.1609	0.5649
0.85	246.0	0.1527	0.4669
0.85	258.0	0.01	0.5137

CLAS Physics Database