CLAS Physics Database

Measurement E151M3633

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: 0.0694
Q2: 0.1715 GeV2
W: 1835.0 GeV
Ebeam: 2.999 GeV
ε: 0.812

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 222.0 0.198 0.263
0.85 90.0 0.1238 0.2533
0.85 102.0 0.3363 0.2512
0.85 114.0 -0.4469 0.2305
0.85 174.0 -0.1951 0.233
0.85 186.0 -0.2983 0.2059
0.85 198.0 -0.3263 0.2086
0.85 210.0 -0.0588 0.2416
0.85 222.0 0.0548 0.2686
0.85 234.0 0.0321 0.2596