Measurement E151M622

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_UL
ε_L:	0.0397
Q²:	0.0291 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.875

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.35	78.0	-0.4712	0.6313
0.35	282.0	2.0897	0.5974
0.45	66.0	-0.1218	0.8224
0.45	78.0	-0.3894	0.5913
0.45	90.0	0.538	0.7209
0.45	126.0	-0.9308	0.6392
0.45	270.0	-0.3117	0.5851
0.45	282.0	0.1627	0.7743
0.55	78.0	-0.7303	0.6151
0.55	90.0	0.3677	0.78
0.55	114.0	1.661	0.7409
0.55	126.0	0.558	0.7883
0.55	222.0	1.8293	0.7223
0.55	270.0	0.4097	0.5527
0.55	282.0	0.326	0.7499
0.65	114.0	-0.9037	0.6251
0.65	126.0	-0.537	0.5737
0.65	138.0	-0.1339	0.6611
0.65	150.0	-0.8941	0.6074
0.65	198.0	0.3653	0.7328
0.65	210.0	2.0415	0.7923
0.65	222.0	1.3256	0.6886
0.75	126.0	-0.7483	0.6184
0.75	138.0	-0.4884	0.6797
0.75	150.0	0.2702	0.8086
0.75	210.0	1.1653	0.7202
0.75	222.0	1.0612	0.6693
0.75	234.0	1.5547	0.6108
0.75	270.0	-0.253	0.7589
0.75	282.0	-0.0001	0.7066
0.85	198.0	-0.3133	0.7327
0.85	210.0	1.7886	0.7029
0.85	222.0	0.6154	0.6155
0.85	234.0	0.211	0.5847
0.85	246.0	0.6151	0.7877

CLAS Physics Database