Measurement E151M1859

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:	0.0344
Q²:	0.0291 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.8567

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	-1.0117	0.8146
0.35	270.0	0.8114	0.8219
0.35	282.0	0.1842	0.8145
0.45	78.0	-0.717	0.8627
0.45	270.0	-0.8497	0.8692
0.55	90.0	-0.8433	0.9617
0.55	138.0	-0.3318	1.0213
0.55	222.0	0.4852	0.8542
0.55	270.0	-0.9578	0.8757
0.55	282.0	0.3159	0.7991
0.65	126.0	-1.1023	0.8917
0.65	138.0	-0.5954	0.6753
0.65	198.0	-1.1171	0.8731
0.65	210.0	-0.2495	0.7201
0.65	222.0	0.5434	0.7815
0.65	270.0	0.9617	0.8143
0.75	78.0	0.1917	0.8836
0.75	126.0	2.184	0.7813
0.75	138.0	0.1479	0.8667
0.75	210.0	-0.807	0.7114
0.75	222.0	-0.4183	0.8433
0.75	234.0	-0.3524	0.8044
0.75	270.0	-0.1556	0.9039
0.75	282.0	-0.4891	0.7756
0.85	114.0	-0.2051	0.8498
0.85	126.0	-0.6342	0.8408
0.85	210.0	1.1274	0.6793
0.85	222.0	1.5964	0.7803
0.85	234.0	-0.9342	0.7051

CLAS Physics Database