CLAS Physics Database

Measurement E151M3141

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: 0.0234
Q2: 0.0348 GeV2
W: 1685.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7592

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 78.0 -0.1364 0.2385
0.45 270.0 0.691 0.2105
0.45 282.0 -0.1994 0.2279
0.55 102.0 -0.303 0.2588
0.55 258.0 -0.2699 0.2763
0.55 270.0 0.2359 0.2765
0.55 318.0 -0.0253 0.2747
0.65 126.0 -0.0037 0.2245
0.65 198.0 -0.073 0.2661
0.65 210.0 0.1189 0.2486
0.65 282.0 0.0994 0.2441
0.65 294.0 -0.116 0.2871
0.75 66.0 -0.2316 0.212
0.75 78.0 0.1072 0.2696
0.75 198.0 0.228 0.2201
0.75 222.0 0.0091 0.2297
0.75 258.0 -0.0683 0.2595
0.75 270.0 0.2727 0.1831
0.75 282.0 0.3341 0.1839
0.85 114.0 0.5465 0.202
0.85 126.0 -0.0412 0.2465
0.85 138.0 -0.3987 0.2326
0.85 198.0 0.2935 0.2218
0.85 210.0 -0.021 0.2297
0.85 222.0 -0.2236 0.2241
0.85 270.0 -0.0906 0.2623