CLAS Physics Database

Measurement E151M501

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: 0.1708
Q2: 0.0348 GeV2
W: 1295.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9637

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.35 306.0 -0.2003 0.5888
0.45 66.0 1.2772 0.612
0.45 78.0 -0.5376 0.5131
0.55 78.0 0.5882 0.5296
0.55 90.0 -0.1627 0.5023
0.65 78.0 -0.3908 0.5504
0.65 90.0 -0.2516 0.5058
0.65 246.0 0.6308 0.5282
0.65 258.0 0.4069 0.4241
0.65 270.0 -0.3531 0.4784
0.75 114.0 0.9132 0.6177
0.75 126.0 -0.1107 0.5408
0.75 138.0 -0.217 0.544
0.75 150.0 0.3039 0.6205
0.75 234.0 -0.0366 0.4903
0.75 246.0 -0.3106 0.3859
0.75 258.0 0.153 0.3668
0.75 270.0 -0.5448 0.4005
0.85 126.0 0.5501 0.5942
0.85 138.0 -0.8877 0.5048
0.85 150.0 -0.1277 0.5557
0.85 222.0 0.1115 0.5611
0.85 234.0 0.8676 0.5135
0.85 246.0 -0.3406 0.4068
0.85 258.0 0.8654 0.4428