CLAS Physics Database

Measurement E151M173

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: AUL
εL: 0.0428
Q2: 0.0291 GeV2
W: 1445.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6382

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 42.0 -0.3945 0.6331
0.25 54.0 -1.27 0.5778
0.35 30.0 -0.3702 0.7974
0.35 42.0 0.3479 0.666
0.35 54.0 0.3812 0.532
0.45 30.0 -0.1198 0.7492
0.45 42.0 -0.1718 0.5961
0.45 54.0 0.9677 0.5368
0.45 66.0 -0.6225 0.7775
0.45 246.0 0.6021 0.628
0.45 258.0 -0.8043 0.691
0.55 30.0 0.6498 0.8258
0.55 42.0 -0.0378 0.6134
0.55 54.0 0.6033 0.6261
0.55 150.0 -0.2429 0.6893
0.55 162.0 -0.6086 0.7555
0.55 210.0 0.2548 0.7826
0.55 222.0 0.1337 0.6341
0.55 234.0 0.3119 0.5396
0.55 246.0 -0.0782 0.5013
0.55 258.0 -0.9618 0.5476
0.65 150.0 -0.6086 0.6441
0.65 162.0 -1.0804 0.5666
0.65 174.0 0.7942 0.6736
0.65 210.0 1.315 0.7497
0.65 222.0 1.5097 0.6113
0.65 234.0 0.2557 0.4713
0.65 246.0 -0.088 0.4223
0.65 258.0 0.2936 0.5863
0.75 42.0 0.3423 0.7818
0.75 138.0 -0.538 0.7177
0.75 150.0 -0.8532 0.6638
0.75 162.0 -0.3002 0.701
0.75 174.0 0.4107 0.7754
0.75 210.0 0.432 0.7911
0.75 222.0 1.1336 0.5853
0.75 234.0 0.6955 0.6009
0.75 246.0 0.0143 0.3823
0.75 258.0 -0.49 0.4206
0.85 222.0 1.5746 0.6731
0.85 234.0 0.1928 0.4737
0.85 246.0 0.6323 0.4735
0.85 258.0 0.4873 0.5615