Measurement E151M1884

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:	0.1221
Q²:	0.1435 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.7892

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	114.0	-0.0005	0.844	0.03
0.65	234.0	-0.5752	0.9313	0.046
0.65	294.0	-0.6858	0.8034	0.0513
0.75	114.0	-0.3862	0.9029	0.038
0.75	222.0	0.6085	0.7121	0.0475
0.75	234.0	-0.2491	0.9248	0.0336
0.75	246.0	1.8385	0.7375	0.1154
0.85	102.0	1.2009	0.8084	0.0787
0.85	114.0	-0.4399	0.961	0.0401
0.85	222.0	0.432	0.7395	0.0398
0.85	234.0	0.3848	0.8518	0.038
0.85	246.0	-0.1448	0.8937	0.0313
0.95	222.0	0.2059	0.7354	0.0325
0.95	246.0	-0.3381	0.6517	0.0363
0.95	258.0	0.1008	0.6834	0.0306

CLAS Physics Database