CLAS Physics Database

Measurement E151M2465

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: 0.0642
Q2: 0.0084 GeV2
W: 1235.0 GeV
Ebeam: 1.0539 GeV
ε: 0.9196

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 258.0 -0.0884 0.1957
0.55 270.0 0.1663 0.215
0.65 234.0 -0.1805 0.2447
0.65 246.0 -0.0328 0.1899
0.65 258.0 -0.3023 0.1945
0.65 270.0 0.0526 0.2038
0.75 174.0 0.3923 0.2291
0.75 246.0 -0.075 0.1838
0.75 258.0 -0.3324 0.1903