CLAS Physics Database

Measurement E151M2885

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: 0.0126
Q2: 0.0171 GeV2
W: 1595.0 GeV
Ebeam: 1.3383 GeV
ε: 0.5894

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 210.0 -0.1836 0.4044 0.0302
0.55 222.0 -0.2432 0.1997 0.0308
0.65 222.0 -0.3899 0.3178 0.031
0.75 222.0 -0.2592 0.4013 0.0304
0.75 234.0 0.1942 0.2616 0.0303
0.85 222.0 -0.6769 0.1819 0.0329
0.55 234.0 0.1027 0.2883 0.0301
0.75 30.0 0.1372 0.2683 0.0301
0.75 222.0 -0.424 0.249 0.0312
0.75 234.0 0.1009 0.2845 0.0301
0.85 222.0 -0.1469 0.2526 0.0301
0.85 234.0 -0.6797 0.2344 0.0329