CLAS Physics Database

Measurement E151M3180

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: 0.868
Q2: 0.1715 GeV2
W: 1235.0 GeV
Ebeam: 2.2596 GeV
ε: 0.9577

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 78.0 0.065 0.2586 0.03
0.55 270.0 0.0016 0.2608 0.03
0.55 282.0 0.1396 0.1627 0.0302
0.65 282.0 0.0938 0.2479 0.0301
0.75 90.0 -0.0151 0.2652 0.03
0.75 270.0 0.0926 0.249 0.0301
0.75 282.0 -0.2042 0.2495 0.0303
0.85 90.0 -0.02 0.2608 0.03
0.85 102.0 0.4399 0.1878 0.0313
0.95 114.0 0.1159 0.2577 0.0301
0.95 126.0 0.1071 0.2392 0.0301
0.95 138.0 0.1424 0.2678 0.0301
0.55 294.0 -0.2691 0.2511 0.0305
0.65 270.0 -0.05 0.2185 0.03
0.65 282.0 -0.0403 0.2181 0.03
0.75 270.0 -0.1549 0.2407 0.0302
0.75 282.0 -0.0728 0.2269 0.03
0.85 90.0 -0.0566 0.2212 0.03
0.85 102.0 0.0306 0.2296 0.03
0.85 114.0 0.0343 0.2397 0.03
0.85 270.0 0.1496 0.2509 0.0301
0.85 282.0 -0.3083 0.2462 0.0306
0.95 90.0 -0.2562 0.244 0.0304
0.95 102.0 -0.2078 0.2344 0.0303
0.95 114.0 -0.5012 0.1894 0.0316
0.95 126.0 -0.3124 0.2184 0.0306