CLAS Physics Database

Measurement E151M1154

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: 0.1251
Q2: 0.2445 GeV2
W: 1745.0 GeV
Ebeam: 2.999 GeV
ε: 0.8431

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.65 114.0 0.5812 0.961
0.65 126.0 -0.6685 0.8587
0.75 90.0 -0.4486 0.829
0.75 186.0 0.1301 0.8712
0.75 198.0 -0.9611 0.7171
0.75 234.0 -0.0147 0.792
0.75 294.0 -0.9369 0.6802
0.85 78.0 -0.0097 0.7425
0.85 90.0 -0.8737 0.5524
0.85 102.0 -0.1399 0.7599
0.85 114.0 0.3125 0.8942
0.85 186.0 0.6129 1.014
0.85 198.0 -0.2822 0.7003
0.85 210.0 -0.4155 0.6667
0.85 222.0 -0.0362 0.6657
0.85 234.0 1.0255 0.8771
0.85 246.0 -0.0131 0.8471
0.95 174.0 -0.7564 0.6623
0.95 198.0 0.1435 0.8451
0.95 210.0 -0.9481 0.7095
0.95 222.0 0.4888 0.7707
0.95 234.0 -0.2451 0.5644
0.95 246.0 1.6076 0.8573
0.95 270.0 -0.5738 0.7232