CLAS Physics Database

Measurement E151M3385

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: 1.1684
Q2: 0.205 GeV2
W: 1205.0 GeV
Ebeam: 2.999 GeV
ε: 0.9761

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 66.0 -0.0003 0.2581
0.45 282.0 -0.0081 0.2832
0.55 282.0 -0.1366 0.2016
0.65 270.0 -0.6622 0.1942
0.65 282.0 0.0613 0.1923
0.65 294.0 -0.2031 0.2027
0.75 66.0 -0.1633 0.2456
0.75 78.0 0.027 0.2748
0.75 90.0 0.0503 0.2494
0.75 258.0 -0.4871 0.2502
0.75 270.0 -0.0743 0.2278
0.75 282.0 -0.1847 0.1856
0.75 294.0 -0.2719 0.2156
0.85 66.0 0.1004 0.1851
0.85 78.0 0.3867 0.1912
0.85 90.0 -0.0587 0.1821
0.85 102.0 -0.1982 0.1887
0.85 114.0 0.4725 0.2246
0.85 258.0 -0.2349 0.276
0.85 270.0 -0.4877 0.2127
0.85 282.0 -0.2886 0.2081
0.85 294.0 -0.3635 0.2577
0.95 54.0 0.1243 0.2343
0.95 66.0 0.3439 0.2075
0.95 78.0 -0.0029 0.2258
0.95 90.0 0.3854 0.1896
0.95 102.0 0.2554 0.2338
0.95 114.0 -0.0478 0.2041
0.95 126.0 0.2866 0.2224