CLAS Physics Database

Measurement E151M1859

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: 0.0344
Q2: 0.0291 GeV2
W: 1565.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8567

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.35 78.0 -1.0117 0.8146 0.0683
0.35 270.0 0.8114 0.8219 0.0576
0.35 282.0 0.1842 0.8145 0.032
0.45 78.0 -0.717 0.8627 0.0528
0.45 270.0 -0.8497 0.8692 0.0596
0.55 90.0 -0.8433 0.9617 0.0593
0.55 138.0 -0.3318 1.0213 0.0361
0.55 222.0 0.4852 0.8542 0.042
0.55 270.0 -0.9578 0.8757 0.0653
0.55 282.0 0.3159 0.7991 0.0356
0.65 126.0 -1.1023 0.8917 0.0732
0.65 138.0 -0.5954 0.6753 0.0469
0.65 198.0 -1.1171 0.8731 0.074
0.65 210.0 -0.2495 0.7201 0.0336
0.65 222.0 0.5434 0.7815 0.0445
0.65 270.0 0.9617 0.8143 0.0655
0.75 78.0 0.1917 0.8836 0.0322
0.75 126.0 2.184 0.7813 0.1357
0.75 138.0 0.1479 0.8667 0.0313
0.75 210.0 -0.807 0.7114 0.0574
0.75 222.0 -0.4183 0.8433 0.0393
0.75 234.0 -0.3524 0.8044 0.0368
0.75 270.0 -0.1556 0.9039 0.0314
0.75 282.0 -0.4891 0.7756 0.0422
0.85 114.0 -0.2051 0.8498 0.0325
0.85 126.0 -0.6342 0.8408 0.0488
0.85 210.0 1.1274 0.6793 0.0746
0.85 222.0 1.5964 0.7803 0.1013
0.85 234.0 -0.9342 0.7051 0.0641