CLAS Physics Database

Measurement E151M3639

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: 0.0286
Q2: 0.0707 GeV2
W: 1865.0 GeV
Ebeam: 2.999 GeV
ε: 0.8183

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 198.0 0.4196 0.2505
0.75 270.0 0.0001 0.2378
0.85 102.0 0.1054 0.2657
0.85 114.0 0.3499 0.1942
0.85 186.0 0.1441 0.2902
0.85 198.0 -0.3658 0.2214
0.85 210.0 -0.0354 0.2682
0.85 270.0 0.0591 0.2786