Measurement E151M1491

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:	0.6208
Q²:	0.2445 GeV²
W:	1295.0 GeV
E_beam:	1.3383 GeV
ε:	0.7815

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	270.0	0.9133	0.5987
0.55	258.0	2.0443	2.0443
0.65	258.0	2.1363	2.1363
0.65	270.0	0.0725	0.9708
0.75	102.0	0.5255	1.1247
0.75	114.0	-0.7891	1.0899
0.75	126.0	0.1648	0.9509
0.75	246.0	1.0358	0.8689
0.75	258.0	0.9069	1.0209
0.75	270.0	1.3247	0.7354
0.75	294.0	-0.4114	0.8425
0.85	66.0	-0.3139	1.1303
0.85	90.0	-1.2458	0.8877
0.85	102.0	-0.4712	0.8602
0.85	114.0	0.8491	0.8223
0.85	126.0	1.248	0.8706
0.85	138.0	1.3609	0.894
0.85	150.0	-0.8058	0.9313
0.85	258.0	2.0664	2.0664
0.85	270.0	2.243	2.243
0.85	282.0	-0.3427	0.9467
0.85	306.0	2.6256	2.6256
0.95	114.0	0.8342	0.7436
0.95	174.0	2.1558	2.1558
0.55	270.0	-0.3658	0.7463
0.55	282.0	1.016	0.7187
0.65	270.0	-0.1873	0.6588
0.65	282.0	1.0536	0.7675
0.75	114.0	-0.2681	0.7917
0.75	126.0	0.06	0.8072
0.75	246.0	0.3563	0.6739
0.75	258.0	0.2673	0.8011
0.75	270.0	-0.5346	0.7193
0.75	294.0	1.3194	0.6385
0.85	102.0	2.7841	2.7841
0.85	114.0	0.0609	0.6452
0.85	126.0	1.6223	0.5933
0.85	138.0	-0.8578	0.8075
0.85	258.0	0.0383	0.696
0.85	270.0	1.5725	0.6539
0.85	282.0	0.9397	0.6478
0.85	294.0	-0.0649	0.6321
0.95	66.0	-0.5786	0.6902
0.95	114.0	0.0502	0.6332
0.95	150.0	-0.0296	0.68

CLAS Physics Database