CLAS Physics Database

Measurement E151M2857

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: 0.0577
Q2: 0.0593 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6517

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 150.0 0.103 0.2622
0.55 162.0 0.3091 0.279
0.55 210.0 -0.179 0.3456
0.55 222.0 -0.0781 0.2834
0.55 234.0 0.4521 0.2528
0.55 246.0 0.1163 0.2238
0.65 126.0 0.027 0.2674
0.65 138.0 0.0491 0.265
0.65 150.0 0.237 0.2401
0.65 162.0 -0.0107 0.264
0.65 210.0 0.0098 0.2546
0.65 222.0 -0.0093 0.2271
0.65 234.0 -0.29 0.2075
0.65 246.0 0.5282 0.2501
0.75 138.0 -0.1894 0.2221
0.75 150.0 0.0623 0.2531
0.75 222.0 0.3648 0.2657
0.75 234.0 -0.1767 0.2337
0.75 246.0 -0.1638 0.2009
0.85 126.0 -0.3443 0.2688
0.85 222.0 0.1094 0.2259
0.85 234.0 0.4663 0.2174
0.85 246.0 -0.2625 0.2158
0.85 258.0 -0.1894 0.2591
0.95 246.0 0.0368 0.2674
0.55 258.0 0.4885 0.3612
0.65 138.0 0.8756 0.1764
0.65 162.0 0.7878 0.1668
0.65 210.0 -0.7189 0.1787
0.65 222.0 -0.2023 0.3034
0.65 234.0 0.0975 0.3423
0.65 246.0 -0.397 0.3292
0.75 222.0 0.1302 0.3444
0.75 234.0 0.1426 0.3383
0.75 246.0 0.2085 0.357
0.75 258.0 -0.3674 0.2852
0.85 222.0 0.2503 0.3476
0.85 234.0 0.1002 0.3248
0.85 246.0 -0.754 0.1433
0.85 258.0 -0.2857 0.4131