Measurement E151M1245

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:	0.0901
Q²:	0.0121 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9165

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	42.0	-1.1044	0.5447
0.45	54.0	-0.7899	0.5199
0.45	66.0	1.2523	0.5772
0.45	270.0	-1.5378	0.3774
0.55	246.0	-0.925	0.3873
0.55	258.0	-0.3904	0.3698
0.55	270.0	0.017	0.3706
0.55	282.0	-0.2752	0.5074
0.65	162.0	-0.8965	0.5539
0.65	174.0	0.6744	0.5553
0.65	186.0	0.1701	0.6004
0.65	198.0	0.6214	0.6382
0.65	234.0	-0.3238	0.4067
0.65	246.0	-0.1354	0.3656
0.65	258.0	-0.1163	0.3205
0.65	270.0	0.7378	0.3635
0.65	282.0	-0.3182	0.4673
0.75	150.0	-0.6725	0.5229
0.75	162.0	0.7782	0.447
0.75	174.0	-0.4109	0.4336
0.75	186.0	0.2719	0.4731
0.75	198.0	-0.2312	0.463
0.75	210.0	-0.4674	0.5755
0.75	222.0	0.5546	0.5041
0.75	234.0	-0.0607	0.4327
0.75	246.0	-0.2334	0.3535
0.75	258.0	-0.3308	0.3193
0.75	270.0	0.797	0.4306
0.85	174.0	-0.0763	0.5996
0.85	186.0	-0.2137	0.5477
0.85	234.0	-1.0795	0.4472
0.85	246.0	-0.0934	0.5847
0.85	258.0	-0.2941	0.5431

CLAS Physics Database