CLAS Physics Database

Measurement E151M2858

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: 0.0668
Q2: 0.0707 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6413

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 138.0 0.6721 0.2181 0.0329
0.55 210.0 0.1715 0.4284 0.0302
0.55 222.0 0.0274 0.2057 0.0301
0.55 234.0 -0.2722 0.2041 0.0305
0.55 246.0 0.1372 0.1976 0.0303
0.65 138.0 0.3121 0.1819 0.0307
0.65 150.0 0.0106 0.1881 0.0302
0.65 162.0 0.3875 0.23 0.031
0.65 210.0 -0.5403 0.2417 0.0319
0.65 222.0 -0.0333 0.1787 0.0302
0.65 234.0 -0.1958 0.1671 0.0303
0.65 246.0 0.2868 0.1824 0.0308
0.75 138.0 0.1722 0.2235 0.0302
0.75 150.0 -0.3909 0.2546 0.031
0.75 162.0 -0.0048 0.2739 0.03
0.75 222.0 0.1436 0.2052 0.0311
0.75 234.0 -0.4993 0.1408 0.0333
0.75 246.0 0.1093 0.1839 0.0301
0.85 222.0 -0.353 0.2565 0.0308
0.85 234.0 0.6612 0.2108 0.0328
0.85 246.0 -0.2747 0.2501 0.0305
0.95 114.0 0.5919 0.2559 0.0323
0.95 126.0 -0.1692 0.275 0.0302
0.95 234.0 -0.4899 0.2624 0.0316
0.75 258.0 0.2359 0.3331 0.0304
0.85 222.0 0.2174 0.4005 0.0303
0.85 234.0 -0.3101 0.2617 0.0306
0.85 246.0 0.2433 0.2952 0.0304
0.85 258.0 -0.0078 0.4175 0.03