CLAS Physics Database

Measurement E151M3179

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: 0.7828
Q2: 0.1435 GeV2
W: 1235.0 GeV
Ebeam: 2.2596 GeV
ε: 0.9626

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 270.0 -0.3674 0.1942
0.65 282.0 0.0182 0.2112
0.75 258.0 0.2785 0.2314
0.75 270.0 0.3199 0.2261
0.75 282.0 0.0573 0.2312
0.85 102.0 0.0061 0.2072
0.85 114.0 0.1608 0.2225
0.85 126.0 -0.0151 0.2492
0.95 102.0 0.4562 0.216
0.95 126.0 0.1401 0.249
0.55 270.0 -0.0902 0.2607
0.55 282.0 -0.1895 0.2486
0.65 270.0 -0.0713 0.2429
0.65 282.0 0.3917 0.2364
0.75 90.0 -0.0292 0.2632
0.75 102.0 -0.1815 0.2629
0.75 258.0 -0.5991 0.2284
0.75 270.0 -0.1908 0.1852
0.75 282.0 0.2031 0.1961
0.85 78.0 0.175 0.2524
0.85 90.0 -0.0043 0.234
0.85 102.0 -0.1315 0.2047
0.85 114.0 0.054 0.2085
0.85 258.0 0.1992 0.2393
0.85 282.0 0.068 0.2578
0.95 90.0 0.301 0.2532
0.95 102.0 -0.3229 0.2462
0.95 114.0 0.2144 0.2287
0.95 126.0 -0.0978 0.2044
0.95 138.0 0.0669 0.2375
0.95 150.0 0.2297 0.2439