Measurement E151M1416

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:	0.053
Q²:	0.0496 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5492

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	42.0	-1.2574	0.7759	0.145
0.25	54.0	0.1357	0.736	0.0337
0.35	54.0	-0.7952	0.6723	0.0946
0.45	42.0	-0.0274	0.7847	0.0302
0.45	54.0	1.1265	0.7554	0.1306
0.45	234.0	-0.0388	0.8417	0.0303
0.45	258.0	-0.3022	0.8741	0.0454
0.55	174.0	-0.7028	0.7956	0.0848
0.55	222.0	-1.3305	0.7281	0.153
0.55	234.0	-0.7581	0.6953	0.0906
0.55	246.0	0.1145	0.6412	0.0327
0.55	258.0	-0.8047	0.7668	0.0956
0.55	270.0	0.4996	0.8906	0.0638
0.65	150.0	1.023	0.8654	0.1192
0.65	234.0	0.0818	0.5869	0.0314
0.65	246.0	1.1947	0.609	0.138
0.65	258.0	-0.1465	0.6166	0.0342
0.75	150.0	0.2929	0.9067	0.0446
0.75	234.0	-0.1892	0.6316	0.0368
0.75	246.0	-0.3545	0.5626	0.05
0.75	258.0	0.2132	0.5457	0.0384
0.75	270.0	-0.7564	0.7481	0.0904
0.85	234.0	-1.1196	0.5516	0.1298
0.85	246.0	0.6145	0.4794	0.0755
0.85	258.0	-0.3203	0.6128	0.047
0.85	270.0	0.7209	0.6843	0.0867

CLAS Physics Database