CLAS Physics Database

Measurement E151M2569

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: 0.0147
Q2: 0.0059 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7684

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 42.0 0.2046 0.2331
0.55 54.0 0.1285 0.2347
0.55 222.0 -0.1967 0.2356
0.55 234.0 -0.3038 0.1823
0.55 246.0 0.2301 0.2309
0.65 54.0 0.243 0.1973
0.65 222.0 -0.2012 0.2406
0.65 234.0 -0.2733 0.2066
0.65 246.0 -0.0903 0.2162
0.75 222.0 0.3579 0.1937
0.75 234.0 0.4084 0.2061
0.75 246.0 0.3564 0.2292
0.85 234.0 -0.2717 0.2446
0.85 246.0 -0.1117 0.2506