CLAS Physics Database

Measurement E151M483

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: 1.0086
Q2: 0.2445 GeV2
W: 1235.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9264

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.45 66.0 0.136 0.5483
0.45 282.0 -0.253 0.481
0.55 270.0 -0.4445 0.478
0.55 282.0 -0.7005 0.4212
0.65 270.0 0.449 0.4615
0.65 282.0 0.4161 0.4908
0.65 294.0 -0.1937 0.4642
0.75 90.0 0.6914 0.6298
0.75 102.0 0.5098 0.5544
0.75 258.0 -0.4278 0.4775
0.75 270.0 0.8543 0.5596
0.75 294.0 -0.6114 0.4123
0.85 78.0 0.7502 0.4977
0.85 90.0 0.0144 0.4339
0.85 102.0 -0.2874 0.4344
0.85 114.0 0.5551 0.462
0.85 126.0 -0.0281 0.5463
0.85 258.0 -0.4597 0.4406
0.85 270.0 0.3658 0.4782
0.85 282.0 0.01 0.5362
0.85 294.0 0.4375 0.5517
0.95 90.0 -0.5246 0.4472
0.95 102.0 -0.3644 0.4071
0.95 114.0 0.3013 0.4787
0.95 138.0 -0.5041 0.4171