CLAS Physics Database

Measurement E151M737

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: 0.9513
Q2: 0.205 GeV2
W: 1235.0 GeV
Ebeam: 2.2596 GeV
ε: 0.9516

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.75 282.0 -2.3188 1.7259 0.2161
0.85 90.0 -0.4377 2.6441 0.0503
0.55 282.0 0.0308 0.3958 0.0301
0.65 270.0 0.2683 0.4383 0.0348
0.65 294.0 0.5992 0.4681 0.0495
0.75 282.0 -0.1227 0.3668 0.0311
0.75 294.0 0.4619 0.4406 0.0426
0.85 90.0 -0.6031 0.4396 0.0497
0.85 102.0 -0.1249 0.4686 0.0311
0.85 282.0 -0.2386 0.4312 0.0338
0.95 102.0 0.0311 0.7158 0.0301
0.95 114.0 0.5165 0.7589 0.0453
0.95 126.0 -1.0668 0.622 0.0762