CLAS Physics Database

Measurement E151M2377

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: ALL
εL: 0.1417
Q2: 0.2915 GeV2
W: 1745.0 GeV
Ebeam: 2.999 GeV
ε: 0.8329

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty
0.75 78.0 0.9212 0.9079
0.75 90.0 -0.4637 1.0605
0.75 198.0 -0.8128 1.0497
0.85 78.0 -1.7293 0.8188
0.85 90.0 -0.5377 0.9808
0.85 102.0 -1.0519 1.0271
0.85 186.0 -0.8445 0.993
0.85 198.0 -1.6694 0.6601
0.85 210.0 0.0071 0.8913
0.85 222.0 0.7966 0.8296
0.85 234.0 0.7214 0.6996
0.85 246.0 -0.2568 1.0477
0.95 174.0 -0.0017 1.0237
0.95 186.0 -2.4295 0.7852
0.95 198.0 1.4438 0.8387
0.95 210.0 -0.8107 0.742
0.95 222.0 1.1858 0.8191
0.95 234.0 1.8831 0.8965
0.95 246.0 0.9086 0.7797
0.95 258.0 -1.8622 0.691
0.95 270.0 -0.2156 0.7707