Measurement E151M474

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:	0.352
Q²:	0.0496 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9717

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.45	78.0	-0.3429	0.3985
0.55	78.0	1.066	0.456
0.55	90.0	-0.0237	0.4261
0.55	270.0	-0.1863	0.5013
0.65	90.0	-0.3707	0.4988
0.65	246.0	-0.5282	0.442
0.65	258.0	-0.4381	0.3349
0.65	270.0	-0.1143	0.404
0.75	114.0	0.7664	0.5593
0.75	126.0	0.0449	0.4784
0.75	138.0	1.6757	0.4176
0.75	234.0	0.1209	0.5637
0.75	246.0	-0.0767	0.3649
0.75	258.0	-0.2149	0.3438
0.75	270.0	0.3829	0.3724
0.85	114.0	0.0558	0.454
0.85	126.0	-0.1389	0.3487
0.85	138.0	-0.0065	0.3593
0.85	150.0	-0.2637	0.3392
0.85	162.0	-0.2599	0.3996
0.85	174.0	0.3081	0.4228
0.85	186.0	-0.2406	0.4498
0.85	234.0	-0.4357	0.4101
0.85	246.0	0.4741	0.4364
0.85	258.0	-0.4208	0.434
0.95	126.0	0.7171	0.4947
0.95	150.0	0.306	0.4353
0.95	162.0	-0.2637	0.3954
0.95	174.0	0.3709	0.5048
0.95	186.0	0.4218	0.4511

CLAS Physics Database