CLAS Physics Database

Measurement E151M2637

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: 0.0459
Q2: 0.0415 GeV2
W: 1475.0 GeV
Ebeam: 1.0539 GeV
ε: 0.5602

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.25 54.0 -0.0327 0.2295 0.03
0.35 54.0 -0.1128 0.2018 0.0301
0.35 66.0 -0.0531 0.2761 0.03
0.45 54.0 -0.2329 0.2026 0.0304
0.45 66.0 0.3559 0.2019 0.0308
0.45 234.0 0.2291 0.2302 0.0303
0.45 246.0 0.2339 0.2098 0.0304
0.45 258.0 -0.2669 0.2232 0.0305
0.55 42.0 0.2216 0.2339 0.0303
0.55 222.0 -0.1316 0.2161 0.0301
0.55 234.0 0.2516 0.2127 0.0304
0.55 246.0 -0.001 0.1853 0.03
0.55 258.0 -0.5657 0.19 0.0321
0.65 162.0 -0.0087 0.2254 0.03
0.65 174.0 -0.3265 0.2273 0.0307
0.65 234.0 -0.0981 0.1816 0.0301
0.65 246.0 -0.2599 0.1844 0.0304
0.65 258.0 -0.1441 0.1863 0.0301
0.65 270.0 -0.1798 0.2436 0.0302
0.75 162.0 -0.0417 0.2479 0.03
0.75 174.0 0.0474 0.2608 0.03
0.75 222.0 -0.1492 0.2407 0.0301
0.75 234.0 0.0655 0.1813 0.03
0.75 246.0 -0.1803 0.1875 0.0302
0.75 258.0 0.0424 0.1967 0.03
0.85 222.0 0.049 0.2289 0.03
0.85 234.0 0.0422 0.2146 0.03
0.85 246.0 0.0206 0.1833 0.03
0.85 258.0 0.0516 0.1977 0.03