CLAS Physics Database

Measurement E151M990

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: AUL
εL: 0.3554
Q2: 0.1205 GeV2
W: 1355.0 GeV
Ebeam: 2.999 GeV
ε: 0.9699

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.65 258.0 0.3467 0.8393
0.65 270.0 -0.6393 0.6182
0.75 90.0 0.0009 0.6389
0.75 102.0 -0.9225 0.6268
0.75 114.0 1.4496 0.7485
0.75 246.0 1.1486 0.6835
0.75 258.0 -1.7378 0.3486
0.75 270.0 -0.538 0.6316
0.75 282.0 1.7128 0.8167
0.85 90.0 0.6791 0.8567
0.85 102.0 0.3158 0.6199
0.85 114.0 -0.3656 0.637
0.85 126.0 2.1016 0.6119
0.85 138.0 0.3393 0.7404
0.85 222.0 -0.7051 0.5722
0.85 234.0 -0.6994 0.5833
0.85 246.0 -0.0139 0.5964
0.85 258.0 -0.1283 0.5307
0.85 270.0 -0.385 0.5893
0.85 282.0 0.753 0.6402
0.95 102.0 0.2015 0.8456
0.95 114.0 -0.2268 0.6367
0.95 258.0 -0.2464 0.6183
0.95 270.0 0.5977 0.6219
0.95 282.0 -0.6551 0.5349
0.95 294.0 0.2254 0.6903