CLAS Physics Database

Measurement E151M231

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: 0.8967
Q2: 0.2445 GeV2
W: 1235.0 GeV
Ebeam: 1.3383 GeV
ε: 0.8237

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.55 270.0 2.7722 2.7722 0.1696
0.55 294.0 -0.8853 0.4357 0.0612
0.65 282.0 0.1151 0.7411 0.0308
0.75 270.0 0.4539 0.8903 0.0406
0.75 282.0 0.2807 0.731 0.0344
0.85 90.0 -0.5124 0.663 0.043
0.85 102.0 -0.4901 0.765 0.0421
0.85 126.0 0.1274 0.8205 0.031
0.85 306.0 1.2236 1.0026 0.0796
0.95 138.0 -0.9722 0.3898 0.0658
0.35 282.0 -0.3146 0.5354 0.0358
0.45 270.0 -0.6677 0.4654 0.0511
0.45 282.0 0.2444 0.535 0.0336
0.45 294.0 -0.5567 0.4789 0.0457
0.55 282.0 0.4799 0.4996 0.0422
0.65 282.0 0.5576 0.5144 0.0457
0.75 258.0 0.7807 0.5211 0.0569
0.75 282.0 0.506 0.4771 0.0434
0.85 126.0 -0.0703 0.5329 0.0303