CLAS Physics Database

Measurement E151M2527

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: ALU
εL: 0.0227
Q2: 0.0059 GeV2
W: 1325.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8444

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.45 42.0 0.2236 0.2284 0.0303
0.55 246.0 -0.0283 0.2591 0.03
0.65 234.0 -0.0212 0.2144 0.03
0.65 246.0 0.0458 0.1982 0.03
0.65 258.0 -0.381 0.2253 0.031
0.75 234.0 0.1645 0.2428 0.0302
0.75 246.0 -0.0719 0.2414 0.03
0.85 234.0 0.074 0.2387 0.03
0.85 246.0 0.194 0.227 0.0302