Measurement E151M1280

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:	0.5212
Q²:	0.1435 GeV²
W:	1265.0 GeV
E_beam:	1.0539 GeV
ε:	0.7687

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
-0.05	42.0	0.2183	0.8018
0.05	42.0	-0.1946	0.7679
0.15	42.0	0.0711	0.7591
0.45	270.0	-0.0696	0.5842
0.45	282.0	-0.2619	0.6373
0.45	294.0	-1.1044	0.6524
0.55	258.0	-0.1727	0.5507
0.55	270.0	-0.2701	0.5299
0.55	282.0	0.7397	0.5327
0.55	294.0	0.3328	0.7372
0.65	246.0	-0.5848	0.6279
0.65	258.0	-0.345	0.5082
0.65	270.0	-0.3613	0.4842
0.65	282.0	-0.3834	0.462
0.65	294.0	0.458	0.534
0.75	138.0	0.4446	0.8015
0.75	246.0	-0.353	0.5716
0.75	258.0	-1.0167	0.5084
0.75	270.0	0.45	0.4894
0.75	282.0	0.3599	0.4534
0.75	294.0	-0.1906	0.5172
0.85	114.0	-0.4268	0.6642
0.85	126.0	0.247	0.584
0.85	138.0	0.9645	0.506
0.85	150.0	0.8213	0.5042
0.85	162.0	-0.4637	0.6
0.85	174.0	1.456	0.5477
0.85	186.0	0.5156	0.6021
0.85	198.0	0.3019	0.6557
0.85	210.0	0.0455	0.6532
0.85	246.0	0.7854	0.6609
0.85	258.0	0.6124	0.584
0.85	270.0	-0.0294	0.468
0.85	282.0	0.2532	0.4804
0.85	294.0	0.4219	0.5617
0.95	114.0	-0.1913	0.5604
0.95	126.0	-0.2231	0.5923
0.95	138.0	0.7406	0.4755
0.95	150.0	0.1971	0.5095
0.95	162.0	0.3572	0.5068
0.95	174.0	0.9836	0.4937
0.95	186.0	1.1089	0.4142
0.95	198.0	-0.2251	0.5343
0.95	210.0	-0.293	0.4774

CLAS Physics Database