Measurement E151M2374

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:	0.095
Q²:	0.1715 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8584

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	102.0	0.1114	1.0555
0.55	114.0	1.0723	0.9849
0.55	126.0	-2.6879	0.9404
0.55	222.0	-1.2204	1.1224
0.65	102.0	-0.745	1.0429
0.65	114.0	0.0155	1.1145
0.65	126.0	-1.2175	0.9072
0.65	138.0	-1.5429	0.9042
0.65	198.0	-2.3569	0.9369
0.65	210.0	-0.0152	0.9728
0.65	234.0	-0.5813	1.1
0.65	282.0	0.8699	0.8668
0.75	90.0	-0.4697	0.768
0.75	102.0	-1.6086	0.8459
0.75	114.0	-0.6729	1.0536
0.75	126.0	-0.8441	1.0184
0.75	186.0	-0.4231	0.8716
0.75	198.0	-0.2465	0.8753
0.75	210.0	1.1322	0.8741
0.75	222.0	0.0193	0.7893
0.75	234.0	1.8559	0.7314
0.75	246.0	0.0102	1.1696
0.75	282.0	-1.5771	0.6811
0.75	294.0	-0.9566	0.7033
0.85	78.0	0.1549	0.8011
0.85	90.0	-0.3038	0.7842
0.85	102.0	1.3115	0.646
0.85	114.0	-1.4792	0.771
0.85	174.0	-0.5431	1.0122
0.85	186.0	-0.6291	0.6768
0.85	198.0	-0.0426	0.66
0.85	210.0	-0.3402	0.7136
0.85	222.0	1.104	0.6151
0.85	234.0	-0.0838	0.7013
0.85	246.0	-0.915	0.9213
0.85	258.0	0.8074	1.0078
0.95	174.0	-0.3977	0.8834
0.95	186.0	-0.6306	0.833
0.95	198.0	-0.3376	0.8463
0.95	210.0	-1.0271	0.8669
0.95	222.0	-0.9115	0.7609
0.95	234.0	0.2377	0.7265
0.95	246.0	0.205	0.8293

CLAS Physics Database