Measurement E151M2006

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:	0.4961
Q²:	0.205 GeV²
W:	1355.0 GeV
E_beam:	2.2596 GeV
ε:	0.9257

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	90.0	0.3347	0.686
0.65	102.0	-0.4895	0.6097
0.65	114.0	1.4247	0.6947
0.65	258.0	-0.2194	0.5132
0.65	270.0	0.5549	0.6238
0.75	90.0	0.0062	0.5303
0.75	102.0	0.3841	0.556
0.75	114.0	0.5836	0.6714
0.75	126.0	-0.6258	1.6675
0.75	246.0	-0.8643	0.5958
0.75	258.0	0.5731	0.6405
0.75	270.0	0.1535	0.5996
0.75	282.0	0.8076	0.5409
0.85	90.0	0.9389	0.6271
0.85	102.0	0.4181	0.6388
0.85	114.0	-1.436	0.5244
0.85	126.0	0.3178	0.7108
0.85	222.0	2.7068	1.4404
0.85	234.0	-0.0399	0.7274
0.85	246.0	-0.4515	0.565
0.85	258.0	0.0194	0.5809
0.85	270.0	0.3165	0.5115
0.85	282.0	0.1557	0.5246
0.95	114.0	-0.8906	4.7021
0.95	126.0	0.1375	4.68
0.95	270.0	1.211	3.6148
0.95	282.0	-0.7326	3.9722
0.95	294.0	0.3682	3.129
0.95	306.0	-2.3682	3.8126
0.85	294.0	0.3474	0.6242
0.95	102.0	1.5757	1.0989
0.95	138.0	-0.4061	1.2369
0.95	234.0	0.2763	1.2826
0.95	258.0	0.9073	0.9662
0.95	270.0	0.715	1.0063
0.95	282.0	1.5309	0.9591
0.95	294.0	-0.0538	0.9106
0.95	306.0	-0.9368	1.0976

CLAS Physics Database