CLAS Physics Database

Measurement E151M2570

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: 0.0175
Q2: 0.0071 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7671

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.45 42.0 0.6486 0.1603 0.0327
0.45 54.0 0.046 0.2556 0.03
0.55 30.0 0.1815 0.2545 0.0302
0.55 42.0 -0.0059 0.1965 0.03
0.55 54.0 0.1927 0.2064 0.0302
0.55 222.0 -0.54 0.2009 0.0319
0.55 234.0 -0.0282 0.254 0.03
0.55 246.0 0.3443 0.182 0.0308
0.65 42.0 0.2597 0.2132 0.0304
0.65 54.0 0.0549 0.2143 0.03
0.65 150.0 0.1613 0.2435 0.0302
0.65 222.0 -0.3119 0.185 0.0306
0.65 234.0 0.0476 0.219 0.03
0.65 246.0 0.1857 0.1877 0.0302
0.65 258.0 0.1645 0.2372 0.0302
0.75 222.0 0.0112 0.2267 0.03
0.75 234.0 -0.1791 0.1803 0.0302
0.75 246.0 0.1924 0.1933 0.0302
0.75 258.0 -0.2099 0.2422 0.0303
0.85 222.0 -0.3097 0.212 0.0306
0.85 234.0 -0.2049 0.1988 0.0303
0.85 246.0 -0.0321 0.2612 0.03