CLAS Physics Database

Measurement E151M2772

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: 0.0233
Q2: 0.0101 GeV2
W: 1415.0 GeV
Ebeam: 1.3383 GeV
ε: 0.84

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 222.0 -0.2325 0.2201 0.0309
0.65 222.0 0.3376 0.2617 0.0308
0.65 234.0 -0.0609 0.2321 0.03
0.75 234.0 0.0964 0.2618 0.0301
0.55 246.0 0.1455 0.353 0.0301
0.65 210.0 -0.0809 0.3774 0.03
0.65 222.0 -0.777 0.1927 0.0338
0.85 222.0 0.2936 0.3897 0.0306
0.85 234.0 0.334 0.2874 0.0307