CLAS Physics Database

Measurement E151M3410

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: 1.1084
Q2: 0.496 GeV2
W: 1265.0 GeV
Ebeam: 2.999 GeV
ε: 0.938

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.05 66.0 0.4038 0.2188
0.15 66.0 -0.1761 0.2439
0.35 282.0 -0.1373 0.2727
0.35 294.0 0.1033 0.2878
0.45 294.0 -0.4893 0.2034
0.55 66.0 0.2552 0.2663
0.55 78.0 0.0198 0.2585
0.55 90.0 0.2704 0.2622
0.55 270.0 -0.0936 0.2287
0.55 282.0 0.0042 0.224
0.55 294.0 0.0972 0.2477
0.65 66.0 -0.0383 0.2142
0.65 78.0 0.1962 0.2275
0.65 102.0 -0.6327 0.2176
0.65 270.0 0.0296 0.2387
0.65 282.0 -0.2488 0.2128
0.65 294.0 0.149 0.2106
0.75 66.0 0.2997 0.2117
0.75 78.0 0.1022 0.2138
0.75 90.0 0.0478 0.255
0.75 102.0 -0.1672 0.2453
0.75 258.0 -0.2223 0.2426
0.75 270.0 0.119 0.2378
0.75 282.0 0.1172 0.2136
0.75 294.0 -0.3211 0.2205
0.75 306.0 0.1558 0.236
0.85 54.0 -0.1159 0.2452
0.85 66.0 -0.081 0.232
0.85 78.0 -0.531 0.1896
0.85 90.0 0.0268 0.2182
0.85 102.0 -0.1983 0.2352
0.85 246.0 -0.0565 0.2712
0.85 258.0 -0.3673 0.2397
0.85 270.0 -0.1134 0.1997
0.85 282.0 0.1911 0.2116
0.85 294.0 0.061 0.2521
0.85 318.0 0.1895 0.2213
0.95 114.0 0.1684 0.2962
0.95 270.0 0.6159 0.2154
0.95 282.0 0.009 0.2792
0.95 294.0 -0.4424 0.2067