Measurement E151M1252

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:	0.2767
Q²:	0.0415 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.8908

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	42.0	-0.4554	0.6008
0.15	54.0	-0.0809	0.6489
0.25	42.0	0.0404	0.4306
0.25	54.0	-0.3897	0.5285
0.35	42.0	0.0666	0.4615
0.35	54.0	-0.0367	0.5364
0.35	282.0	-0.8169	0.5796
0.45	270.0	0.9386	0.4486
0.45	282.0	0.2048	0.4336
0.55	246.0	-0.5819	0.6148
0.55	258.0	0.2139	0.4091
0.55	270.0	0.1083	0.3167
0.55	282.0	-0.157	0.4153
0.65	246.0	1.2292	0.3769
0.65	258.0	0.0214	0.3156
0.65	270.0	-0.1807	0.2931
0.65	282.0	0.3381	0.3731
0.65	294.0	-0.6963	0.5495
0.75	150.0	-0.0469	0.5418
0.75	162.0	0.8286	0.6003
0.75	174.0	-1.2837	0.4953
0.75	186.0	-0.0112	0.5601
0.75	198.0	-1.2436	0.5777
0.75	210.0	1.5173	0.4692
0.75	234.0	0.2336	0.5043
0.75	246.0	0.0892	0.3958
0.75	258.0	0.1791	0.339
0.75	270.0	0.1119	0.3328
0.75	282.0	0.0457	0.4091
0.85	126.0	-0.0344	0.5662
0.85	138.0	0.8697	0.4218
0.85	150.0	0.0774	0.3855
0.85	162.0	0.1221	0.3204
0.85	174.0	-0.7161	0.3336
0.85	186.0	0.1583	0.3868
0.85	198.0	-0.2159	0.4118
0.85	210.0	0.2666	0.4977
0.85	222.0	0.4707	0.5046
0.85	234.0	0.4121	0.5122
0.85	246.0	0.1327	0.4275
0.85	258.0	-0.35	0.372
0.85	270.0	0.2834	0.3747
0.95	150.0	-0.3779	0.4087
0.95	162.0	0.1835	0.4721
0.95	174.0	-0.1823	0.4079
0.95	186.0	-0.093	0.4134
0.95	198.0	0.1261	0.4796

CLAS Physics Database