Measurement E151M1422

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:	0.1972
Q²:	0.0205 GeV²
W:	1205.0 GeV
E_beam:	1.3383 GeV
ε:	0.9578

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	270.0	0.0269	0.4461
0.65	258.0	-0.0773	0.3814
0.65	270.0	-0.7437	0.303
0.75	150.0	-0.0662	0.8867
0.75	162.0	0.4395	0.6412
0.75	186.0	-0.1861	0.7513
0.75	246.0	-0.3579	0.4133
0.75	258.0	0.4438	0.3794
0.75	270.0	0.508	0.4359
0.85	150.0	0.6207	0.49
0.85	162.0	0.0446	0.4197
0.85	174.0	0.0399	0.381
0.85	186.0	-0.1208	0.4641

CLAS Physics Database