Measurement E151M1705

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:	1.0086
Q²:	0.2445 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9264

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	66.0	0.3655	0.6261	0.0373
0.45	282.0	-0.0098	0.5945	0.03
0.55	270.0	0.6391	0.6226	0.049
0.55	282.0	0.3711	0.5847	0.0375
0.65	270.0	-0.6632	0.4888	0.0501
0.65	282.0	0.8517	0.4939	0.0597
0.65	294.0	-0.174	0.5684	0.0318
0.75	90.0	-0.5999	0.6642	0.0471
0.75	102.0	0.9592	0.5663	0.0654
0.75	258.0	0.4499	0.6204	0.0405
0.75	270.0	0.0305	0.6047	0.0301
0.75	294.0	-0.5605	0.5719	0.0453
0.85	78.0	0.0196	0.5437	0.03
0.85	90.0	0.8302	0.4703	0.0586
0.85	102.0	-0.3855	0.5381	0.038
0.85	114.0	-0.5487	0.4956	0.0448
0.85	126.0	0.0297	0.6462	0.0301
0.85	258.0	1.2668	0.491	0.0824
0.85	270.0	-0.7015	0.4952	0.052
0.85	282.0	0.1806	0.6293	0.0319
0.85	294.0	-0.1548	0.599	0.0314
0.95	90.0	1.0001	0.5198	0.0676
0.95	102.0	0.1549	0.517	0.0314
0.95	114.0	0.7497	0.5027	0.0544
0.95	138.0	1.4974	0.4245	0.0956

CLAS Physics Database