CLAS Physics Database

Measurement E151M3181

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: 0.9513
Q2: 0.205 GeV2
W: 1235.0 GeV
Ebeam: 2.2596 GeV
ε: 0.9516

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.75 282.0 -0.0114 0.2439 0.03
0.85 90.0 0.2197 0.2339 0.0303
0.55 282.0 0.3776 0.2197 0.0309
0.65 270.0 -0.1809 0.2327 0.0302
0.65 294.0 -0.0466 0.2643 0.03
0.75 282.0 0.0224 0.2156 0.03
0.75 294.0 -0.4682 0.2152 0.0314
0.85 90.0 0.0363 0.2609 0.03
0.85 102.0 0.3043 0.2349 0.0306
0.85 282.0 0.1623 0.2408 0.0302
0.95 102.0 -0.24 0.2286 0.0304
0.95 114.0 -0.1007 0.2339 0.0301
0.95 126.0 0.146 0.2275 0.0301