CLAS Physics Database

Measurement E151M1238

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: 0.7473
Q2: 0.1205 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8436

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty
0.35 282.0 -0.0863 0.5585
0.45 282.0 -0.5518 0.4731
0.45 294.0 -0.7743 0.5205
0.55 270.0 -0.4606 0.4819
0.55 282.0 0.2845 0.4637
0.55 294.0 -1.1142 0.4788
0.65 270.0 -0.5166 0.4792
0.65 282.0 -0.6308 0.433
0.65 294.0 -0.1096 0.543
0.75 270.0 -0.941 0.4577
0.75 282.0 -0.3701 0.4338
0.85 138.0 1.7531 1.7531
0.95 126.0 -0.4411 0.4617
0.95 138.0 1.0547 0.394
0.95 150.0 0.399 0.4074
0.95 162.0 -0.1169 0.371
0.95 174.0 0.151 0.3787
0.95 186.0 0.8813 0.3844
0.95 198.0 0.4443 0.4815
0.95 210.0 -0.1535 0.4304
0.95 222.0 -0.3892 0.464