CLAS Physics Database

Measurement E151M2588

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: 0.01
Q2: 0.005 GeV2
W: 1415.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7229

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 54.0 0.0899 0.2633
0.45 66.0 0.0598 0.2538
0.55 54.0 -0.4759 0.2153
0.55 234.0 -0.0405 0.2325
0.65 42.0 0.1702 0.2486
0.65 222.0 -0.2056 0.2181
0.65 234.0 -0.302 0.2282
0.65 246.0 0.0538 0.207
0.75 234.0 0.0878 0.2152
0.85 222.0 0.4752 0.2178
0.85 234.0 0.0331 0.2322