Measurement E151M647

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_UL
ε_L:	0.1596
Q²:	0.1715 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.8004

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	102.0	0.8305	0.7901	0.059
0.65	126.0	0.1788	0.8554	0.0319
0.65	138.0	-0.9608	0.7188	0.066
0.75	102.0	-0.3027	0.7125	0.0353
0.75	114.0	-0.029	0.7051	0.0301
0.75	126.0	-0.3821	0.7615	0.038
0.75	138.0	0.2493	0.7934	0.0337
0.75	210.0	0.0697	0.7592	0.0303
0.75	222.0	0.121	0.8243	0.0309
0.75	234.0	1.832	0.9247	0.116
0.75	246.0	0.4669	0.74	0.0414
0.75	294.0	0.192	0.7405	0.0322
0.85	78.0	0.0898	0.8286	0.0305
0.85	90.0	-1.2606	0.6218	0.0827
0.85	102.0	0.151	0.8425	0.0314
0.85	222.0	2.2474	0.7162	0.1407
0.85	234.0	1.1401	0.6256	0.0759
0.85	246.0	1.2904	0.793	0.0844
0.95	90.0	-0.03	0.723	0.0301
0.95	222.0	0.6837	0.7268	0.0515
0.95	234.0	1.807	0.7463	0.1145
0.95	246.0	0.4549	0.6335	0.0409
0.95	258.0	0.185	0.7062	0.0321
0.95	270.0	0.6631	0.7099	0.0504

CLAS Physics Database