Measurement E151M1738

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:	0.1416
Q²:	0.0348 GeV²
W:	1325.0 GeV
E_beam:	1.9889 GeV
ε:	0.9567

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	306.0	0.3969	0.7476
0.35	306.0	0.5518	0.6263
0.45	78.0	0.746	0.6289
0.45	90.0	1.486	0.5869
0.45	282.0	0.1703	0.7116
0.45	294.0	-1.1726	0.6692
0.55	78.0	-0.5504	0.5965
0.55	90.0	0.0311	0.6506
0.55	102.0	-0.6316	0.7313
0.55	258.0	-0.2271	0.7519
0.55	282.0	-0.4382	0.7315
0.55	294.0	0.2184	0.7465
0.65	78.0	0.4908	0.6087
0.65	222.0	-0.3344	0.7612
0.65	234.0	-0.9717	0.6406
0.65	246.0	-0.0336	0.5193
0.65	258.0	0.8369	0.5419
0.75	114.0	-0.9526	0.6482
0.75	126.0	0.1198	0.5987
0.75	138.0	-0.9342	0.559
0.75	234.0	0.3331	0.4717
0.75	246.0	-0.0894	0.4518
0.75	258.0	-0.2436	0.4964
0.75	270.0	0.8136	0.6185
0.85	114.0	-1.1366	0.6952
0.85	126.0	-0.074	0.6201
0.85	138.0	0.5312	0.5583
0.85	150.0	-0.0171	0.7738
0.85	222.0	-0.7228	0.579
0.85	234.0	-0.2177	0.6385
0.85	246.0	-0.3561	0.5286
0.85	258.0	0.3623	0.4827

CLAS Physics Database