Measurement E151M2328

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:	0.2897
Q²:	0.496 GeV²
W:	1625.0 GeV
E_beam:	2.999 GeV
ε:	0.8443

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	90.0	-0.8619	1.0143	0.0693
0.65	102.0	-0.2078	1.0488	0.0336
0.65	114.0	-1.9812	0.8571	0.1468
0.75	234.0	0.8669	0.9081	0.0697
0.75	258.0	1.8984	0.8856	0.1409
0.85	66.0	-0.282	1.0259	0.0363
0.85	78.0	2.3808	0.9468	0.1752
0.85	222.0	0.0197	0.9571	0.03
0.85	234.0	2.0658	0.7726	0.1528
0.85	246.0	-0.297	0.784	0.0369
0.85	258.0	1.2516	0.7981	0.0956
0.85	270.0	-1.1697	0.8991	0.09
0.85	282.0	-1.12	0.9476	0.0866
0.95	234.0	0.6271	0.804	0.0545
0.95	246.0	-0.2553	0.8835	0.0353
0.95	258.0	1.3201	0.862	0.1003
0.95	270.0	1.9913	0.7797	0.1475
0.95	282.0	0.0324	0.8432	0.0301
0.95	294.0	0.4804	0.7793	0.046
0.95	306.0	-0.4859	0.8142	0.0463
0.95	318.0	0.7701	0.8478	0.0634

CLAS Physics Database