CLAS Physics Database

Measurement E151M3121

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: 0.0929
Q2: 0.1205 GeV2
W: 1625.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7746

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 126.0 0.1578 0.2363 0.0302
0.65 234.0 -0.1582 0.2551 0.0302
0.65 294.0 0.0685 0.248 0.03
0.75 222.0 -0.4036 0.2179 0.0311
0.75 234.0 -0.3284 0.2396 0.0307
0.85 102.0 -0.2536 0.2364 0.0304
0.85 114.0 0.2493 0.2584 0.0304
0.85 210.0 -0.1913 0.2618 0.0302
0.85 222.0 -0.3595 0.2385 0.0308
0.85 234.0 -0.0218 0.2881 0.03
0.95 114.0 -0.0235 0.2737 0.03
0.95 246.0 0.3719 0.2576 0.0309