Measurement E151M152

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:	0.0389
Q²:	0.0205 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.7036

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	42.0	1.9327	0.7517
0.25	54.0	1.5819	0.8515
0.35	30.0	-0.0144	0.8659
0.35	42.0	-0.0985	0.5966
0.35	54.0	0.44	0.5756
0.35	66.0	0.4165	0.8678
0.45	18.0	0.6741	0.9212
0.45	30.0	-0.1949	0.6803
0.45	42.0	-0.9291	0.4718
0.45	54.0	0.3725	0.5357
0.45	66.0	0.751	0.927
0.45	222.0	0.0593	0.8039
0.45	234.0	-1.2972	0.5672
0.55	30.0	0.149	0.6562
0.55	42.0	0.606	0.5889
0.55	54.0	-0.3396	0.5109
0.55	66.0	1.4434	0.937
0.55	150.0	-0.8619	0.7478
0.55	162.0	0.0103	0.7532
0.55	174.0	-0.7859	0.7251
0.55	210.0	1.1106	0.7818
0.55	222.0	0.0016	0.588
0.55	234.0	0.6304	0.5701
0.55	246.0	0.6245	0.5145
0.55	258.0	-0.7342	0.5932
0.65	30.0	0.0297	0.8623
0.65	138.0	-0.1237	0.8332
0.65	150.0	0.9822	0.7478
0.65	162.0	0.1048	0.7779
0.65	174.0	0.0619	0.7314
0.65	210.0	2.0975	0.7018
0.65	222.0	0.1428	0.53
0.65	234.0	-0.1243	0.4142
0.65	246.0	-0.4531	0.4192
0.65	258.0	0.2889	0.5495
0.75	150.0	0.21	0.5839
0.75	162.0	-0.6415	0.6398
0.75	210.0	0.9408	0.7325
0.75	222.0	0.7032	0.5526
0.75	234.0	-0.2483	0.4301
0.75	246.0	-0.1623	0.4233
0.75	258.0	0.4298	0.5519
0.85	210.0	0.7814	0.8218
0.85	222.0	0.5585	0.5739
0.85	234.0	0.5109	0.5037
0.85	246.0	0.1453	0.4294
0.85	258.0	0.2884	0.6009
0.85	270.0	-1.0645	0.6048
0.95	246.0	-0.6996	0.5356

CLAS Physics Database