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Measurement E151M2636

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: 0.0395
Q2: 0.0348 GeV2
W: 1475.0 GeV
Ebeam: 1.0539 GeV
ε: 0.5694

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.25 42.0 -0.036 0.2268 0.03
0.25 54.0 0.0305 0.1877 0.03
0.35 42.0 0.1031 0.2098 0.0301
0.35 54.0 0.3409 0.1896 0.0308
0.35 66.0 -0.267 0.2316 0.0305
0.45 30.0 -0.0543 0.254 0.03
0.45 42.0 -0.1378 0.1894 0.0301
0.45 54.0 0.1599 0.1834 0.0302
0.45 66.0 0.1581 0.2441 0.0302
0.45 234.0 -0.3004 0.2104 0.0306
0.45 246.0 0.5061 0.1835 0.0317
0.45 258.0 0.0158 0.245 0.03
0.55 42.0 0.1626 0.2156 0.0302
0.55 54.0 -0.0026 0.2035 0.03
0.55 162.0 -0.444 0.2392 0.0313
0.55 174.0 -0.1192 0.192 0.0301
0.55 198.0 -0.0472 0.2639 0.03
0.55 222.0 0.0512 0.2094 0.03
0.55 234.0 -0.057 0.1794 0.03
0.55 246.0 -0.4766 0.1509 0.0315
0.55 258.0 -0.0501 0.2056 0.03
0.65 162.0 -0.0056 0.2145 0.03
0.65 174.0 0.0216 0.2334 0.03
0.65 222.0 0.1998 0.1897 0.0303
0.65 234.0 -0.2143 0.1892 0.0303
0.65 246.0 -0.1767 0.1766 0.0302
0.65 258.0 -0.0529 0.1623 0.03
0.75 174.0 0.0048 0.2235 0.03
0.75 186.0 -0.2735 0.2241 0.0305
0.75 222.0 -0.3266 0.2205 0.0307
0.75 234.0 0.1804 0.1753 0.0302
0.75 246.0 -0.107 0.1728 0.0301
0.75 258.0 -0.1001 0.1892 0.0301
0.75 270.0 -0.231 0.2355 0.0304
0.85 222.0 -0.0975 0.2434 0.0301
0.85 234.0 0.0536 0.1748 0.03
0.85 246.0 -0.0654 0.1734 0.03
0.85 258.0 -0.2839 0.181 0.0305
Created in SINP MSU, CLAS Collaboration