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	syst. uncert.
0.65	90.0	0.3347	0.686	0.0371
0.65	102.0	-0.4895	0.6097	0.0437
0.65	114.0	1.4247	0.6947	0.0974
0.65	258.0	-0.2194	0.5132	0.0574
0.65	270.0	0.5549	0.6238	0.0565
0.75	90.0	0.0062	0.5303	0.054
0.75	102.0	0.3841	0.556	0.0406
0.75	114.0	0.5836	0.6714	0.0547
0.75	126.0	-0.6258	1.6675	0.0649
0.75	246.0	-0.8643	0.5958	0.0756
0.75	258.0	0.5731	0.6405	0.0479
0.75	270.0	0.1535	0.5996	0.0326
0.75	282.0	0.8076	0.5409	0.0815
0.85	90.0	0.9389	0.6271	0.068
0.85	102.0	0.4181	0.6388	0.0859
0.85	114.0	-1.436	0.5244	0.1011
0.85	126.0	0.3178	0.7108	0.0443
0.85	222.0	2.7068	1.4404	0.2506
0.85	234.0	-0.0399	0.7274	0.0353
0.85	246.0	-0.4515	0.565	0.0474
0.85	258.0	0.0194	0.5809	0.0612
0.85	270.0	0.3165	0.5115	0.0364
0.85	282.0	0.1557	0.5246	0.0546
0.95	114.0	-0.8906	4.7021	0.0872
0.95	126.0	0.1375	4.68	0.0326
0.95	270.0	1.211	3.6148	0.1153
0.95	282.0	-0.7326	3.9722	0.0737
0.95	294.0	0.3682	3.129	0.0452
0.95	306.0	-2.3682	3.8126	0.2197
0.85	294.0	0.3474	0.6242	0.0376
0.95	102.0	1.5757	1.0989	0.1068
0.95	138.0	-0.4061	1.2369	0.04
0.95	234.0	0.2763	1.2826	0.035
0.95	258.0	0.9073	0.9662	0.0662
0.95	270.0	0.715	1.0063	0.0553
0.95	282.0	1.5309	0.9591	0.104
0.95	294.0	-0.0538	0.9106	0.0302
0.95	306.0	-0.9368	1.0976	0.0679

CLAS Physics Database