CLAS Physics Database

Measurement E151M1231

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: ALL
εL: 0.3053
Q2: 0.0348 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.9162

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.45 282.0 0.6213 0.4753 0.0762
0.55 258.0 -0.6421 0.4608 0.0784
0.55 270.0 -0.3624 0.4161 0.0507
0.55 282.0 -0.444 0.4692 0.0584
0.65 258.0 0.0735 0.4213 0.0311
0.65 270.0 -0.6018 0.3156 0.0742
0.75 246.0 -0.0998 0.5287 0.032
0.75 258.0 0.499 0.4485 0.0638
0.75 270.0 -0.6418 0.4138 0.0784
0.85 138.0 0.3974 0.5854 0.0539
0.85 150.0 -0.6325 0.4535 0.0774
0.85 162.0 -0.1855 0.5131 0.0366
0.85 174.0 -0.3625 0.3673 0.0507
0.85 186.0 -0.0937 0.3875 0.0318
0.85 198.0 0.0027 0.364 0.03
0.85 210.0 -0.0686 0.4983 0.031
0.85 222.0 -0.0087 0.4907 0.03
0.95 174.0 0.8588 0.3987 0.1014