Measurement E151M2255

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:	0.5715
Q²:	0.5925 GeV²
W:	1445.0 GeV
E_beam:	2.999 GeV
ε:	0.8875

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	78.0	0.451	0.8527
0.55	90.0	2.5448	2.5448
0.65	78.0	0.667	0.869
0.65	90.0	-0.7488	0.9387
0.65	102.0	-0.3379	0.9828
0.65	258.0	0.7975	0.8626
0.75	78.0	1.2581	0.7844
0.75	90.0	1.0742	0.9588
0.75	102.0	1.7053	0.8272
0.75	114.0	-0.6316	0.9828
0.75	234.0	-0.4328	0.8183
0.75	258.0	0.1997	0.7651
0.75	270.0	1.0989	0.7331
0.75	282.0	-0.7055	0.9174
0.85	90.0	1.5756	0.8476
0.85	258.0	2.617	2.617
0.85	270.0	0.9822	0.8342
0.85	282.0	2.1734	0.6547
0.85	294.0	0.986	0.6604
0.85	306.0	-0.1638	0.7249
0.95	258.0	-0.1352	0.7834
0.95	306.0	-0.2124	0.7785

CLAS Physics Database