CLAS Physics Database

Measurement E151M696

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: 0.0198
Q2: 0.0291 GeV2
W: 1685.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7618

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.35 78.0 0.2014 0.6239
0.45 18.0 0.6014 0.6565
0.45 78.0 2.3577 2.3577
0.45 270.0 0.4803 0.6039
0.45 282.0 0.1832 0.6283
0.55 78.0 -0.7212 0.535
0.55 126.0 -0.3687 0.5702
0.55 138.0 0.273 0.6083
0.55 222.0 0.686 0.6528
0.55 270.0 0.6286 0.6353
0.65 138.0 -0.5026 0.562
0.65 150.0 -0.4637 0.5942
0.65 198.0 0.7178 0.6418
0.65 210.0 -0.3066 0.5175
0.65 222.0 0.9965 0.6485
0.65 282.0 -0.4138 0.566
0.75 66.0 -0.1103 0.6288
0.75 198.0 -0.8239 0.5234
0.75 210.0 0.7323 0.5737
0.75 222.0 0.0068 0.5643
0.75 258.0 1.0423 0.6169
0.75 270.0 0.8212 0.4987
0.75 282.0 0.6403 0.6254
0.85 114.0 -0.5224 0.5502
0.85 126.0 -0.2846 0.5896
0.85 198.0 0.8745 0.6656
0.85 210.0 0.7931 0.6
0.85 222.0 0.2792 0.6248