CLAS Physics Database

Measurement E151M2458

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: 0.6043
Q2: 0.0844 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8747

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.45 282.0 -0.1239 0.2459 0.0301
0.55 270.0 0.4058 0.1572 0.0311
0.55 282.0 -0.0239 0.1861 0.03
0.55 294.0 -0.2014 0.2222 0.0303
0.65 258.0 0.2554 0.2239 0.0304
0.65 270.0 -0.293 0.1904 0.0306
0.65 282.0 -0.0889 0.1659 0.0301
0.75 258.0 0.4409 0.2027 0.0313
0.75 270.0 -0.1571 0.1896 0.0302
0.75 282.0 -0.0156 0.2221 0.03
0.85 138.0 -0.3801 0.1982 0.0309
0.85 150.0 0.0997 0.1942 0.0301
0.85 162.0 -0.4584 0.1852 0.0314
0.85 174.0 0.1658 0.2027 0.0302
0.85 186.0 -0.0639 0.2046 0.03
0.85 198.0 -0.5765 0.1829 0.0321
0.85 210.0 0.7134 0.1844 0.0332
0.85 222.0 -0.1032 0.2241 0.0301
0.85 234.0 -0.0632 0.2637 0.03
0.95 126.0 0.2295 0.2307 0.0303
0.95 138.0 0.1983 0.1971 0.0303
0.95 150.0 -0.046 0.219 0.03
0.95 162.0 -0.044 0.1905 0.03
0.95 174.0 0.0386 0.2294 0.03
0.95 186.0 -0.2889 0.1803 0.0306
0.95 198.0 0.0444 0.2141 0.03
0.95 210.0 0.0616 0.1953 0.03
0.95 222.0 -0.2953 0.2006 0.0306