Measurement E151M1971

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:	0.9326
Q²:	0.2915 GeV²
W:	1265.0 GeV
E_beam:	2.2596 GeV
ε:	0.9291

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	270.0	0.3094	0.5478	0.0361
0.75	90.0	-0.2847	0.4989	0.0353
0.75	270.0	0.4491	0.5487	0.0419
0.75	282.0	1.1829	0.5183	0.0826
0.75	294.0	-0.1716	0.5262	0.032
0.85	66.0	-0.1289	0.5879	0.0311
0.85	90.0	-0.4123	0.5355	0.0402
0.85	282.0	0.7139	0.5743	0.0553
0.95	282.0	1.7892	0.8234	0.1202
0.55	282.0	-1.9508	1.7042	0.1818
0.65	270.0	-0.5665	1.844	0.0601
0.65	282.0	-1.636	1.7435	0.1533
0.75	270.0	3.217	1.7499	0.2972
0.75	282.0	0.4	1.9668	0.0474
0.85	66.0	2.7304	2.4432	0.2527
0.85	90.0	2.6566	2.5582	0.246
0.85	102.0	-0.7438	2.5915	0.0746
0.85	294.0	-3.6809	2.0118	0.3396
0.95	78.0	-0.0321	6.8066	0.0301

CLAS Physics Database