Measurement E151M2141

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:	0.03
Q²:	0.0415 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.8202

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	126.0	0.4792	2.1033	0.0533
0.75	210.0	1.399	2.0947	0.132
0.75	258.0	-1.4702	1.7408	0.1384
0.75	282.0	-3.7585	1.6077	0.3467
0.85	114.0	-0.7027	2.3441	0.0712
0.85	126.0	-2.6042	2.4883	0.2412
0.45	270.0	0.5521	0.6364	0.0468
0.55	210.0	0.4555	0.7799	0.0422
0.55	270.0	-0.4924	0.6381	0.0439
0.65	138.0	-0.6681	0.7333	0.0528
0.75	66.0	-0.2402	0.6501	0.0338
0.75	198.0	-0.3354	0.862	0.0371
0.75	210.0	-0.0154	0.7916	0.03
0.85	126.0	-0.493	0.8339	0.0439
0.85	222.0	0.1939	0.8688	0.0325
0.85	270.0	0.3394	0.7073	0.0373

CLAS Physics Database