Measurement E151M1317

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:	0.163
Q²:	0.0496 GeV²
W:	1325.0 GeV
E_beam:	1.0539 GeV
ε:	0.7983

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	42.0	-1.2608	0.8955
0.25	42.0	0.7084	0.955
0.35	30.0	0.1454	0.7504
0.35	42.0	-0.0527	0.7588
0.45	42.0	0.925	0.6752
0.45	258.0	0.9298	0.815
0.45	270.0	0.7974	0.7804
0.55	234.0	0.425	0.7858
0.55	246.0	-0.5396	0.6267
0.55	258.0	0.2067	0.6134
0.55	270.0	1.4937	0.6374
0.55	282.0	0.5442	0.7905
0.65	150.0	-1.306	0.8389
0.65	162.0	1.254	0.8264
0.65	222.0	0.1802	0.8189
0.65	234.0	-0.0511	0.6201
0.65	246.0	-0.0904	0.4961
0.65	258.0	0.174	0.4916
0.65	270.0	-0.1334	0.6693
0.75	126.0	-0.656	0.7822
0.75	138.0	0.4748	0.6492
0.75	150.0	0.9678	0.6033
0.75	162.0	-0.2434	0.6257
0.75	174.0	1.0718	0.7243
0.75	186.0	1.2892	0.7201
0.75	222.0	0.5237	0.7166
0.75	234.0	0.0385	0.5131
0.75	246.0	0.5853	0.4375
0.75	258.0	-0.4992	0.4496
0.75	270.0	-0.118	0.4705
0.75	282.0	-1.1238	0.8157
0.85	126.0	-0.4236	0.7707
0.85	138.0	0.1683	0.6062
0.85	150.0	0.5283	0.5457
0.85	162.0	-0.0698	0.7235
0.85	174.0	-0.541	0.6581
0.85	186.0	0.6533	0.6848
0.85	222.0	0.0147	0.7577
0.85	234.0	-0.3208	0.6022
0.85	246.0	0.3825	0.5035
0.85	258.0	0.0772	0.4037
0.85	270.0	-0.2348	0.4286
0.85	282.0	0.1488	0.5351
0.95	174.0	0.2132	0.6854
0.95	186.0	0.5017	0.6407
0.95	258.0	1.0246	0.4981

CLAS Physics Database