Measurement E151M2062

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:	0.3175
Q²:	0.2445 GeV²
W:	1475.0 GeV
E_beam:	2.2596 GeV
ε:	0.8743

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	90.0	-0.2604	1.4517	0.0384
0.75	102.0	2.143	1.1474	0.1992
0.75	126.0	-0.4876	1.5701	0.0539
0.75	234.0	0.3089	1.2474	0.0413
0.75	258.0	-0.0692	1.1061	0.0307
0.85	258.0	-1.0451	1.4278	0.1006
0.85	270.0	-0.3198	1.2108	0.042
0.95	270.0	1.9738	3.9456	0.1839
0.95	282.0	-4.2153	3.7306	0.3886
0.95	294.0	-0.3456	3.1131	0.0437
0.65	102.0	0.1321	0.756	0.0312
0.75	114.0	0.5529	0.6774	0.0468
0.75	234.0	-0.3034	0.7185	0.0359
0.85	126.0	1.7253	0.7674	0.1162
0.85	234.0	1.6535	0.9054	0.1117
0.85	246.0	0.6578	0.6568	0.0523
0.85	258.0	0.3259	0.827	0.0367
0.85	270.0	0.474	0.7979	0.043
0.95	270.0	-0.8872	1.3034	0.065

CLAS Physics Database