CLAS Physics Database

Measurement E151M2459

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: 0.6763
Q2: 0.101 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8605

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 282.0 -0.4111 0.2142
0.35 294.0 0.3108 0.2074
0.45 270.0 -0.0813 0.2323
0.45 282.0 0.0419 0.1895
0.45 294.0 0.4203 0.2243
0.55 270.0 0.0517 0.1922
0.55 282.0 0.0851 0.1763
0.55 294.0 -0.0313 0.2202
0.65 258.0 -0.01 0.2174
0.65 270.0 0.238 0.1774
0.65 282.0 -0.0882 0.1567
0.75 270.0 -0.1308 0.2241
0.75 282.0 -0.0561 0.2015
0.75 294.0 0.4306 0.1976
0.85 138.0 0.6118 0.2281
0.85 150.0 0.1873 0.2276
0.85 162.0 -0.2524 0.2012
0.85 186.0 -0.3072 0.2438
0.85 198.0 0.5659 0.1994
0.85 210.0 -0.4835 0.2226
0.85 222.0 0.0671 0.218
0.95 126.0 0.1708 0.217
0.95 138.0 0.0671 0.1909
0.95 150.0 0.0268 0.1886
0.95 162.0 -0.0368 0.2103
0.95 174.0 -0.2601 0.205
0.95 186.0 -0.1596 0.196
0.95 198.0 0.0889 0.2438
0.95 210.0 -0.1264 0.233
0.95 222.0 -0.1122 0.24
0.95 234.0 0.2869 0.2466