Measurement E151M1327

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:	0.0217
Q²:	0.0071 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.8079

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	42.0	-0.0279	0.8666	0.0302
0.45	54.0	-0.0013	0.8965	0.03
0.55	42.0	-1.1664	0.9153	0.1349
0.55	54.0	-0.4908	0.8896	0.063
0.55	222.0	-1.243	0.8409	0.1434
0.55	234.0	-0.0562	0.7831	0.0307
0.55	246.0	0.1219	0.846	0.033
0.65	30.0	0.0253	0.9166	0.0301
0.65	42.0	-0.991	0.8186	0.1157
0.65	54.0	0.3511	0.8818	0.0497
0.65	234.0	-0.1032	0.6108	0.0322
0.65	246.0	0.4538	0.6367	0.0593
0.75	222.0	-1.2391	0.7219	0.1429
0.75	234.0	-1.0632	0.626	0.1236
0.75	246.0	1.5895	0.6463	0.1818
0.75	258.0	1.4346	0.7505	0.1646
0.85	222.0	0.2924	0.7907	0.0446
0.85	234.0	-1.3186	0.6699	0.1517
0.85	246.0	-0.5199	0.6243	0.0659

CLAS Physics Database