Measurement E151M2340

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:	0.262
Q²:	0.496 GeV²
W:	1655.0 GeV
E_beam:	2.999 GeV
ε:	0.8315

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	102.0	-0.6697	0.9354	0.0571
0.55	102.0	-0.832	0.8175	0.0674
0.65	234.0	0.1171	0.8951	0.0312
0.75	66.0	-0.2006	0.9121	0.0333
0.75	102.0	-0.4911	0.9582	0.0466
0.75	222.0	0.1664	0.8753	0.0323
0.75	234.0	0.0981	0.8852	0.0308
0.85	54.0	0.2849	0.8387	0.0364
0.85	66.0	0.3429	0.8589	0.039
0.85	78.0	-0.1789	0.9159	0.0327
0.85	210.0	-0.3529	0.9481	0.0394
0.85	222.0	0.2625	0.8205	0.0355
0.85	234.0	-0.6347	0.8428	0.0549
0.85	246.0	0.7481	0.8824	0.062
0.85	258.0	-0.6979	0.7142	0.0588
0.85	270.0	-0.0108	0.891	0.03
0.85	282.0	-1.5559	0.6966	0.1167
0.95	210.0	1.5864	0.8339	0.1189
0.95	222.0	0.6724	0.8426	0.0572
0.95	234.0	-0.7997	0.7983	0.0653
0.95	258.0	-0.3981	0.907	0.0416
0.95	270.0	1.2694	0.6446	0.0968
0.95	294.0	0.5679	0.8236	0.0509
0.95	306.0	0.2437	0.7198	0.0348

CLAS Physics Database