CLAS Physics Database

Measurement E151M1129

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: 0.1955
Q2: 0.348 GeV2
W: 1685.0 GeV
Ebeam: 2.999 GeV
ε: 0.8489

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 282.0 1.3663 0.8567
0.45 282.0 0.1522 0.7488
0.55 90.0 0.0302 0.7933
0.55 102.0 0.1154 0.6758
0.55 234.0 0.2466 0.8369
0.65 90.0 -1.2996 0.5422
0.65 102.0 -0.1459 0.6434
0.65 114.0 -0.969 0.5345
0.65 126.0 -0.5339 0.702
0.65 210.0 1.0184 0.8829
0.65 234.0 0.7065 0.8305
0.65 306.0 0.6001 0.7715
0.75 66.0 0.1529 0.7563
0.75 78.0 -0.6833 0.5183
0.75 90.0 0.8207 0.81
0.75 114.0 -0.2293 0.5677
0.75 126.0 -0.4877 0.6344
0.75 210.0 -0.2589 0.6645
0.75 222.0 0.5222 0.7214
0.75 234.0 1.1069 0.7695
0.75 246.0 0.7979 0.7813
0.75 258.0 -0.2498 0.6674
0.85 66.0 -1.2221 0.4616
0.85 78.0 -0.8324 0.4956
0.85 90.0 -0.6855 0.6605
0.85 102.0 -0.5035 0.6766
0.85 186.0 0.4083 0.7418
0.85 198.0 0.9747 0.7388
0.85 210.0 0.1467 0.6008
0.85 222.0 1.454 0.7162
0.85 234.0 0.2028 0.4794
0.85 246.0 -0.1516 0.5355
0.85 258.0 -0.2216 0.5441
0.95 198.0 0.0425 0.6601
0.95 210.0 0.5753 0.6312
0.95 222.0 1.0764 0.772
0.95 234.0 0.2565 0.5717
0.95 246.0 -1.2323 0.4597
0.95 258.0 0.1883 0.521
0.95 270.0 0.3674 0.5759
0.95 282.0 0.4385 0.5134
0.95 294.0 0.8278 0.677