Measurement E151M1720

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:	0.9096
Q²:	0.2915 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9062

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.0298	0.5911
0.35	66.0	0.708	0.6309
0.55	282.0	-0.2457	0.6048
0.65	270.0	-0.3429	0.5738
0.65	282.0	0.7198	0.4954
0.65	294.0	-0.155	0.6272
0.75	78.0	1.7583	0.6051
0.75	90.0	-0.0497	0.5779
0.75	102.0	0.2989	0.6154
0.75	258.0	0.8787	0.5911
0.75	270.0	0.3158	0.6276
0.75	282.0	0.0297	0.5862
0.75	294.0	-0.1438	0.6208
0.85	66.0	1.1365	0.6034
0.85	78.0	0.2993	0.5163
0.85	90.0	0.0304	0.7502
0.85	102.0	1.6335	0.5529
0.85	114.0	-0.1707	0.6205
0.85	246.0	0.1946	0.6296
0.85	258.0	1.1176	0.5686
0.85	270.0	-0.0681	0.646
0.85	282.0	0.2609	0.5153
0.85	294.0	0.9995	0.5099
0.95	90.0	0.9639	0.5044
0.95	126.0	0.1503	0.5359
0.95	150.0	0.4561	0.6661
0.95	294.0	-0.2234	0.5545

CLAS Physics Database