Measurement E151M2377

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:	0.1417
Q²:	0.2915 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8329

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	78.0	0.9212	0.9079	0.0732
0.75	90.0	-0.4637	1.0605	0.0451
0.75	198.0	-0.8128	1.0497	0.0661
0.85	78.0	-1.7293	0.8188	0.1289
0.85	90.0	-0.5377	0.9808	0.0492
0.85	102.0	-1.0519	1.0271	0.082
0.85	186.0	-0.8445	0.993	0.0682
0.85	198.0	-1.6694	0.6601	0.1247
0.85	210.0	0.0071	0.8913	0.03
0.85	222.0	0.7966	0.8296	0.0651
0.85	234.0	0.7214	0.6996	0.0603
0.85	246.0	-0.2568	1.0477	0.0353
0.95	174.0	-0.0017	1.0237	0.03
0.95	186.0	-2.4295	0.7852	0.1787
0.95	198.0	1.4438	0.8387	0.1089
0.95	210.0	-0.8107	0.742	0.066
0.95	222.0	1.1858	0.8191	0.0911
0.95	234.0	1.8831	0.8965	0.1398
0.95	246.0	0.9086	0.7797	0.0724
0.95	258.0	-1.8622	0.691	0.1383
0.95	270.0	-0.2156	0.7707	0.0338

CLAS Physics Database