CLAS Physics Database

Measurement E151M3315

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: 0.0502
Q2: 0.0415 GeV2
W: 1565.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8903

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 78.0 -0.1022 0.2598
0.45 78.0 0.1885 0.2481
0.45 126.0 -0.0927 0.2511
0.45 282.0 0.105 0.2397
0.55 78.0 0.3774 0.2433
0.55 114.0 -0.5572 0.2242
0.55 126.0 0.282 0.2501
0.55 270.0 0.0981 0.2552
0.65 126.0 -0.202 0.2503
0.65 138.0 0.0718 0.2238
0.65 210.0 0.0696 0.2174
0.65 222.0 0.0323 0.2221
0.75 114.0 0.0566 0.2536
0.75 126.0 0.5953 0.2074
0.75 138.0 -0.018 0.2186
0.75 222.0 -0.1915 0.1958
0.75 234.0 0.2974 0.2374
0.75 282.0 -0.3888 0.2362
0.85 102.0 0.1999 0.2573
0.85 114.0 0.123 0.2394
0.85 210.0 0.2311 0.2221
0.85 222.0 -0.0751 0.1978
0.85 234.0 -0.3598 0.2072
0.35 270.0 0.0632 0.2601
0.45 78.0 0.3933 0.2158
0.55 126.0 -0.2105 0.2564
0.55 138.0 0.0816 0.2443
0.55 282.0 -0.0406 0.2691
0.65 138.0 -0.2582 0.2369
0.65 222.0 -0.0025 0.2534
0.75 66.0 -0.3114 0.2547
0.75 126.0 -0.4482 0.2453
0.75 234.0 0.4824 0.2136
0.75 282.0 0.4671 0.2149
0.85 102.0 -0.2601 0.2292
0.85 114.0 0.2684 0.2524
0.85 222.0 -0.0849 0.2611
0.85 234.0 -0.0816 0.255