Measurement E151M1570

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:	0.0231
Q²:	0.0121 GeV²
W:	1445.0 GeV
E_beam:	1.3383 GeV
ε:	0.8087

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	30.0	-0.3218	0.8022
0.55	42.0	-1.8736	0.6902
0.55	126.0	2.6885	2.6885
0.55	138.0	-0.488	1.251
0.55	150.0	-0.3365	1.1836
0.55	162.0	-1.4338	0.7911
0.55	210.0	-0.3476	1.0629
0.55	222.0	-1.1907	0.5082
0.55	234.0	-0.6613	0.5409
0.65	126.0	-0.591	0.8441
0.65	138.0	-1.7419	0.7347
0.65	150.0	-0.6826	0.8415
0.65	210.0	-0.2917	0.8992
0.65	222.0	-0.2682	0.7376
0.65	234.0	0.7666	0.6676
0.65	246.0	0.5315	0.9236
0.75	150.0	-1.8299	0.6375
0.75	210.0	-0.8509	0.9367
0.75	222.0	-0.5231	0.7362
0.75	234.0	-1.6797	0.6386
0.75	246.0	-0.1989	0.8168
0.85	210.0	0.539	0.9158
0.85	222.0	0.4339	0.6675
0.85	234.0	-0.3309	0.6642
0.55	246.0	-0.3356	1.0122
0.65	138.0	-0.6607	1.072
0.65	210.0	-1.3332	0.9
0.65	222.0	-0.5476	0.8013
0.65	234.0	0.8832	0.8615
0.65	246.0	-1.0768	0.952
0.75	138.0	-0.8048	0.978
0.75	222.0	0.1126	0.8418
0.75	234.0	-1.3367	0.7682
0.75	246.0	-0.3781	1.0637
0.85	210.0	-0.1268	1.0488
0.85	222.0	0.4	0.969
0.85	234.0	-1.2243	0.6382
0.85	246.0	0.1249	1.0418

CLAS Physics Database