CLAS Physics Database

Measurement E151M2189

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: 1.1217
Q2: 0.5925 GeV2
W: 1265.0 GeV
Ebeam: 2.999 GeV
ε: 0.9258

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.45 282.0 0.77 0.715 0.0634
0.55 294.0 0.0985 0.7005 0.0308
0.65 66.0 0.7792 0.7473 0.064
0.65 78.0 -0.8066 0.7916 0.0657
0.65 270.0 0.203 0.7341 0.0334
0.65 282.0 0.6973 0.6658 0.0588
0.65 318.0 0.357 0.7109 0.0396
0.75 78.0 0.2484 0.6663 0.035
0.75 258.0 -0.3889 0.7793 0.0412
0.75 270.0 -0.0544 0.6971 0.0303
0.75 282.0 -0.169 0.5819 0.0324
0.75 294.0 0.4553 0.7386 0.0446
0.85 66.0 1.183 0.7658 0.0909
0.85 78.0 0.0729 0.7525 0.0305
0.85 90.0 -0.1597 0.7319 0.0322
0.85 246.0 0.7198 0.6808 0.0602
0.85 258.0 0.9005 0.7205 0.0719
0.85 270.0 -0.2508 0.7137 0.0351
0.85 282.0 -0.5592 0.7881 0.0504
0.85 294.0 0.6829 0.6241 0.0579
0.85 306.0 0.3214 0.7019 0.038
0.85 318.0 1.1291 0.715 0.0872
0.95 270.0 0.4121 0.732 0.0423