Measurement E151M2049

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:	0.3993
Q²:	0.2915 GeV²
W:	1445.0 GeV
E_beam:	2.2596 GeV
ε:	0.8741

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	90.0	3.2231	3.2231
0.95	306.0	5.8042	3.1229
0.65	114.0	0.2954	0.8277
0.75	90.0	1.241	0.7218
0.75	270.0	-1.3273	0.6862
0.85	222.0	0.4757	0.9578
0.85	234.0	0.1373	0.8648
0.85	258.0	0.1081	0.8309
0.85	282.0	0.0137	0.8401
0.95	294.0	0.0886	1.3043

CLAS Physics Database