CLAS Physics Database

Measurement E151M574

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: AUL
εL: 0.4355
Q2: 0.2915 GeV2
W: 1415.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8474

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 66.0 0.6405 0.7994
0.35 294.0 -1.1467 0.5591
0.65 102.0 1.7585 0.7215
0.65 258.0 -1.4357 0.4142
0.75 90.0 -0.5976 0.6135
0.75 102.0 -0.2124 0.5943
0.75 114.0 0.0604 0.7662
0.75 246.0 0.5555 0.6951
0.75 258.0 0.7322 0.7243
0.75 270.0 0.0131 0.6324
0.75 282.0 0.0011 0.7868
0.85 90.0 -0.5897 0.6277
0.85 102.0 0.2241 0.658
0.85 114.0 -0.748 0.5151
0.85 234.0 1.3817 0.7581
0.85 246.0 0.2844 0.6551
0.85 258.0 -0.7998 0.5153
0.85 270.0 -0.4705 0.5387
0.85 282.0 -0.3127 0.4464
0.85 294.0 -0.0409 0.6637
0.85 306.0 -0.5872 0.5672
0.95 234.0 0.0514 0.5682
0.95 270.0 0.2935 0.579
0.95 282.0 0.6252 0.6437
0.95 294.0 0.5267 0.5945
0.95 306.0 1.0575 0.6278