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Measurement E151M2939

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: 0.7126
Q2: 0.1715 GeV2
W: 1265.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9373

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.15 66.0 0.0404 0.247
0.25 66.0 0.0345 0.225
0.35 66.0 -0.0845 0.1924
0.35 78.0 0.1344 0.2456
0.45 66.0 0.1842 0.2158
0.45 78.0 0.0823 0.1976
0.45 282.0 0.4399 0.2093
0.55 270.0 0.0226 0.2037
0.55 282.0 -0.3555 0.1735
0.65 102.0 0.2058 0.276
0.65 258.0 -0.021 0.2777
0.65 270.0 0.0403 0.1918
0.65 282.0 -0.3567 0.1658
0.75 90.0 -0.0326 0.2204
0.75 102.0 0.0393 0.2091
0.75 114.0 0.2207 0.2461
0.75 258.0 -0.1953 0.1636
0.75 270.0 -0.2332 0.2033
0.75 282.0 -0.1747 0.1661
0.75 294.0 -0.1446 0.2247
0.85 78.0 -0.4668 0.2104
0.85 90.0 -0.0396 0.1789
0.85 102.0 0.3695 0.1873
0.85 114.0 0.1219 0.1876
0.85 126.0 0.1551 0.1901
0.85 138.0 -0.2082 0.2398
0.85 246.0 -0.1691 0.2028
0.85 258.0 0.0213 0.2063
0.85 270.0 0.1117 0.1818
0.85 282.0 -0.2639 0.1976
0.85 294.0 0.3588 0.2148
0.95 78.0 -0.1567 0.2408
0.95 90.0 -0.5759 0.1919
0.95 102.0 -0.0015 0.2076
0.95 114.0 0.3121 0.1795
0.95 126.0 0.2058 0.2048
0.95 138.0 -0.2999 0.209
0.95 150.0 0.0441 0.2368
0.95 162.0 -0.1764 0.2886
0.95 246.0 -0.0972 0.2836
0.95 258.0 -0.2269 0.2784
0.95 270.0 -0.1488 0.2212
Created in SINP MSU, CLAS Collaboration