CLAS Physics Database

Measurement E151M62

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: 0.0337
Q2: 0.0071 GeV2
W: 1295.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8735

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.55 234.0 0.2422 0.7182
0.55 246.0 0.7834 0.6719
0.55 258.0 -0.4735 0.5939
0.65 222.0 -0.3603 0.6336
0.65 234.0 0.1591 0.5163
0.65 246.0 0.3377 0.5433
0.65 258.0 0.144 0.5459
0.75 162.0 0.0321 0.6893
0.75 234.0 -0.1415 0.5382
0.75 246.0 0.279 0.5602
0.75 258.0 0.5074 0.6721
0.85 222.0 0.8254 0.6718
0.85 234.0 0.2565 0.5927
0.85 246.0 0.8932 0.6478
0.85 258.0 -0.6554 0.4608