Measurement E151M1703

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:	0.8557
Q²:	0.1715 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9441

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	66.0	-1.7027	1.7027
0.35	78.0	-0.1955	0.6783
0.45	66.0	-1.124	0.603
0.45	78.0	-1.3125	0.5033
0.45	282.0	-0.9758	0.5557
0.55	78.0	-0.8686	0.618
0.55	270.0	0.416	0.5657
0.55	282.0	-0.0658	0.508
0.55	294.0	0.6533	0.6232
0.65	270.0	-0.4027	0.4567
0.65	282.0	-0.0514	0.4592
0.75	90.0	-0.1853	0.6066
0.75	102.0	1.4377	0.5026
0.75	246.0	0.1734	0.6254
0.75	258.0	-0.2011	0.506
0.75	270.0	-0.3685	0.4583
0.75	282.0	-0.237	0.4776
0.75	294.0	-0.0991	0.6395
0.85	78.0	-0.493	0.5139
0.85	90.0	0.752	0.4801
0.85	102.0	0.0522	0.439
0.85	114.0	-0.4308	0.4989
0.85	126.0	0.9112	0.5501
0.85	258.0	0.5868	0.5667
0.85	270.0	-0.1822	0.4809
0.85	282.0	0.0937	0.539
0.95	78.0	-0.5705	0.4747
0.95	90.0	-0.4675	0.4393
0.95	102.0	0.1089	0.4801
0.95	126.0	0.0473	0.4895
0.95	150.0	-0.4435	0.5027
0.95	162.0	-0.4504	0.4181
0.95	174.0	0.6687	0.5596
0.95	186.0	0.4426	0.528
0.95	270.0	-0.3947	0.5728

CLAS Physics Database