CLAS Physics Database

Measurement E151M3088

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: 0.1057
Q2: 0.101 GeV2
W: 1565.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8288

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 294.0 0.0286 0.281
0.45 78.0 -0.1653 0.237
0.45 126.0 -0.4689 0.223
0.45 282.0 0.1199 0.2518
0.55 114.0 0.3606 0.2542
0.55 126.0 0.093 0.237
0.55 270.0 -0.0123 0.2761
0.55 282.0 -0.56 0.1902
0.65 102.0 -0.0508 0.276
0.65 114.0 -0.0181 0.22
0.65 126.0 0.0296 0.2059
0.65 138.0 -0.0289 0.2594
0.65 198.0 -0.2934 0.2733
0.65 222.0 0.0483 0.2082
0.65 234.0 -0.2448 0.1976
0.65 294.0 -0.0665 0.2409
0.75 114.0 0.3344 0.2229
0.75 126.0 0.0828 0.2146
0.75 138.0 -0.2506 0.2199
0.75 150.0 0.0098 0.2505
0.75 210.0 0.0348 0.2358
0.75 222.0 -0.1526 0.2009
0.75 234.0 0.0937 0.185
0.75 246.0 -0.173 0.2262
0.75 282.0 0.3058 0.1926
0.75 294.0 -0.351 0.2241
0.85 90.0 0.1756 0.2511
0.85 114.0 -0.1266 0.2457
0.85 126.0 -0.0614 0.2682
0.85 210.0 -0.5415 0.2115
0.85 222.0 0.0158 0.2049
0.85 234.0 -0.0243 0.1991
0.85 246.0 -0.0626 0.22
0.95 114.0 -0.307 0.2555
0.95 222.0 -0.1903 0.2255
0.95 234.0 -0.2272 0.2451