CLAS Physics Database

Measurement E151M2856

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: 0.0496
Q2: 0.0496 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6604

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 138.0 -0.0971 0.2803
0.55 162.0 -0.1646 0.3966
0.55 222.0 0.4845 0.2855
0.55 234.0 0.0813 0.1887
0.55 246.0 0.2046 0.183
0.65 138.0 -0.2501 0.2003
0.65 150.0 -0.3167 0.264
0.65 210.0 -0.127 0.1955
0.65 222.0 0.1299 0.2015
0.65 234.0 -0.0531 0.1958
0.65 246.0 -0.5326 0.1522
0.75 138.0 0.264 0.229
0.75 150.0 -0.3491 0.3266
0.75 210.0 0.4175 0.2945
0.75 222.0 0.1673 0.4049
0.75 234.0 0.2474 0.1802
0.75 246.0 0.2053 0.1825
0.85 126.0 -0.1008 0.3375
0.85 210.0 -0.1899 0.3583
0.85 222.0 -0.3185 0.1717
0.85 234.0 -0.0238 0.177
0.85 246.0 0.0745 0.1726
0.85 258.0 -0.1436 0.2042