CLAS Physics Database

Measurement E151M2501

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: 0.4755
Q2: 0.1205 GeV2
W: 1265.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7913

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.15 42.0 0.071 0.2657
0.55 270.0 0.188 0.2118
0.55 282.0 -0.0396 0.2503
0.65 258.0 -0.033 0.2448
0.65 270.0 0.0118 0.1789
0.65 282.0 -0.1551 0.1982
0.65 294.0 0.3713 0.2366
0.75 258.0 -0.0792 0.2205
0.75 270.0 -0.2868 0.2091
0.75 282.0 -0.3015 0.2068
0.75 294.0 0.0422 0.2465
0.85 114.0 0.2174 0.2146
0.85 138.0 -0.2354 0.1977
0.85 150.0 0.672 0.1681
0.85 162.0 0.1896 0.222
0.85 174.0 0.2 0.2525
0.85 258.0 -0.1996 0.2277
0.85 270.0 -0.0577 0.2088
0.85 282.0 -0.3623 0.2001
0.85 294.0 -0.3104 0.2569
0.95 162.0 0.3102 0.2386
0.95 174.0 0.0154 0.2366
0.95 198.0 -0.0322 0.2558
0.95 210.0 0.0987 0.2548