Measurement E151M2164

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:	1.257
Q²:	0.2445 GeV²
W:	1205.0 GeV
E_beam:	2.999 GeV
ε:	0.9724

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	0.3798	0.677	0.0407
0.45	294.0	-1.1894	0.6058	0.0913
0.55	282.0	0.5453	0.6607	0.0496
0.55	294.0	1.4702	0.5865	0.1107
0.65	270.0	0.0144	0.6458	0.03
0.65	282.0	-0.5342	0.66	0.049
0.65	294.0	-0.8829	0.5135	0.0707
0.75	66.0	0.8397	0.7268	0.0679
0.75	78.0	-0.6163	0.6143	0.0538
0.75	90.0	0.474	0.5838	0.0456
0.75	270.0	-0.9298	0.5907	0.0738
0.75	282.0	0.3511	0.5702	0.0393
0.75	294.0	0.5831	0.6135	0.0518
0.85	54.0	0.0849	0.6687	0.0306
0.85	66.0	-0.6031	0.5452	0.053
0.85	78.0	1.0252	0.5196	0.0802
0.85	90.0	0.2999	0.5109	0.0371
0.85	102.0	0.3037	0.5453	0.0372
0.85	258.0	0.036	0.7092	0.0301
0.85	270.0	-0.3561	0.6852	0.0396
0.85	282.0	0.3404	0.6211	0.0388
0.85	294.0	0.3871	0.6324	0.0411
0.95	30.0	-0.4341	0.6826	0.0435
0.95	54.0	0.8411	0.5819	0.068
0.95	66.0	1.0845	0.571	0.0842
0.95	78.0	-0.4606	0.5537	0.0449
0.95	90.0	0.1571	0.6035	0.0321
0.95	102.0	-0.2084	0.6494	0.0336
0.95	114.0	-0.5907	0.602	0.0523

CLAS Physics Database