CLAS Physics Database

Measurement E151M3401

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: 1.2681
Q2: 0.5925 GeV2
W: 1235.0 GeV
Ebeam: 2.999 GeV
ε: 0.9304

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 294.0 -0.0293 0.2797
0.45 282.0 -0.4652 0.2567
0.55 78.0 0.0018 0.272
0.55 270.0 0.5343 0.2526
0.65 66.0 -0.1613 0.283
0.65 78.0 -0.1344 0.2789
0.65 90.0 -0.3651 0.2484
0.65 282.0 0.0126 0.2573
0.75 90.0 -0.1197 0.232
0.75 270.0 -0.0107 0.2667
0.75 282.0 -0.5773 0.1989
0.85 66.0 0.0211 0.2387
0.85 90.0 -0.0942 0.2632