CLAS Physics Database

Measurement E151M1410

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: ALL
εL: 0.0208
Q2: 0.0171 GeV2
W: 1475.0 GeV
Ebeam: 1.0539 GeV
ε: 0.5934

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty
0.25 42.0 -0.4879 0.735
0.25 54.0 -0.4179 0.8032
0.35 42.0 0.8266 0.7001
0.35 54.0 -0.4457 0.5182
0.35 66.0 -1.8114 0.6619
0.45 30.0 -0.5943 0.7861
0.45 42.0 -1.4453 0.7093
0.45 54.0 -0.7 0.5498
0.45 66.0 -1.733 0.6199
0.45 222.0 1.2497 0.7359
0.45 234.0 0.0532 0.6602
0.45 246.0 -0.2769 0.6279
0.55 30.0 -1.2413 0.7542
0.55 42.0 -0.6509 0.679
0.55 54.0 -1.5916 0.8196
0.55 66.0 -1.5368 0.8572
0.55 150.0 0.1961 0.8116
0.55 162.0 -0.1469 0.8508
0.55 222.0 0.4121 0.7537
0.55 234.0 -0.3593 0.5879
0.55 246.0 -0.4613 0.5368
0.55 258.0 1.4749 0.6235
0.65 42.0 -0.7357 0.8241
0.65 150.0 -1.4813 0.7088
0.65 162.0 -1.251 0.7562
0.65 222.0 -0.4442 0.5836
0.65 234.0 0.0269 0.5337
0.65 246.0 0.3043 0.5691
0.65 258.0 -0.1815 0.7158
0.75 42.0 -0.0489 0.7672
0.75 222.0 -0.4282 0.7769
0.75 234.0 0.483 0.5402
0.75 246.0 0.253 0.537
0.75 258.0 -0.6953 0.6673
0.85 138.0 -1.1637 0.7982
0.85 150.0 -0.3751 0.7639
0.85 222.0 -0.8926 0.5726
0.85 234.0 -0.1523 0.5052
0.85 246.0 0.0889 0.4865
0.85 258.0 1.119 0.7245