Measurement E151M164

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:	0.0095
Q²:	0.0059 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.6685

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	42.0	-0.257	0.7149	0.0419
0.45	54.0	0.2259	0.6083	0.0395
0.45	222.0	0.743	0.8379	0.0897
0.55	42.0	0.706	0.8176	0.0857
0.55	54.0	0.4295	0.7216	0.0573
0.55	222.0	1.3553	0.6832	0.1571
0.55	234.0	-0.132	0.673	0.0335
0.55	246.0	-0.7121	0.6347	0.0864
0.65	222.0	-0.2421	0.6004	0.0407
0.65	234.0	0.2028	0.7627	0.0378
0.65	246.0	0.179	0.624	0.0363
0.75	222.0	-0.4458	0.647	0.0589
0.75	234.0	-0.3191	0.5335	0.0471
0.75	246.0	0.2688	0.634	0.0428
0.85	222.0	-0.3302	0.6957	0.0481
0.85	234.0	0.8502	0.6784	0.1013

CLAS Physics Database