CLAS Physics Database

Measurement E151M90

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: 0.0746
Q2: 0.0205 GeV2
W: 1325.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8291

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.25 30.0 0.0997 0.813 0.0321
0.25 42.0 0.1426 0.5891 0.0341
0.25 54.0 -0.7454 0.5966 0.0899
0.35 30.0 0.9691 0.769 0.1143
0.35 42.0 0.777 0.594 0.0934
0.35 54.0 -0.9247 0.4693 0.1094
0.45 18.0 0.1036 0.6963 0.0322
0.45 30.0 1.4801 0.5255 0.171
0.45 42.0 1.0337 0.5696 0.1214
0.45 54.0 0.0177 0.6224 0.0301
0.45 246.0 0.4626 0.7449 0.0606
0.55 30.0 1.091 0.7437 0.1277
0.55 42.0 0.4655 0.4447 0.0609
0.55 54.0 0.4967 0.5645 0.064
0.55 162.0 1.2689 0.8632 0.1475
0.55 222.0 0.86 0.6594 0.1023
0.55 234.0 -0.0004 0.4808 0.03
0.55 246.0 -0.4916 0.3828 0.0635
0.55 258.0 -0.072 0.4685 0.0311
0.55 270.0 0.5198 0.6547 0.0663
0.65 138.0 1.0022 0.7318 0.1179
0.65 150.0 0.2134 0.5392 0.0386
0.65 162.0 -1.2255 0.474 0.1426
0.65 174.0 0.5243 0.7652 0.0668
0.65 186.0 -0.6259 0.6824 0.0773
0.65 210.0 0.4802 0.791 0.0623
0.65 222.0 0.2066 0.5153 0.0381
0.65 234.0 -0.4216 0.3754 0.0566
0.65 246.0 -0.1222 0.3884 0.0331
0.65 258.0 0.713 0.3997 0.0865
0.65 270.0 -0.4669 0.4887 0.061
0.75 138.0 -1.091 0.5807 0.1277
0.75 150.0 -0.1748 0.4963 0.036
0.75 162.0 0.6123 0.7012 0.0758
0.75 174.0 -0.377 0.6204 0.0523
0.75 186.0 -0.3968 0.5862 0.0542
0.75 198.0 0.8423 0.7901 0.1004
0.75 210.0 -0.132 0.5993 0.0336
0.75 222.0 0.489 0.5036 0.0632
0.75 234.0 0.3629 0.4003 0.051
0.75 246.0 -0.277 0.3654 0.0435
0.75 258.0 0.3155 0.3939 0.0468
0.75 270.0 0.3412 0.508 0.0491
0.85 138.0 -0.6177 0.6772 0.0764
0.85 150.0 -0.1133 0.6043 0.0327
0.85 162.0 -0.4613 0.5614 0.0605
0.85 174.0 -0.2124 0.6746 0.0385
0.85 210.0 1.0537 0.6627 0.1236
0.85 222.0 0.9937 0.5585 0.117
0.85 234.0 -0.387 0.3985 0.0533
0.85 246.0 0.0402 0.3711 0.0303
0.85 258.0 0.1709 0.3682 0.0358
0.85 270.0 -0.2993 0.451 0.0454
0.95 246.0 -1.1199 0.4301 0.1309