CLAS Physics Database

Measurement E151M2633

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: 0.0246
Q2: 0.0205 GeV2
W: 1475.0 GeV
Ebeam: 1.0539 GeV
ε: 0.5888

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 30.0 0.1649 0.2485
0.25 42.0 -0.0122 0.2235
0.25 54.0 0.0912 0.2524
0.35 42.0 0.1774 0.176
0.35 54.0 0.0908 0.1786
0.35 66.0 0.1721 0.2177
0.45 42.0 0.3568 0.2033
0.45 54.0 0.0397 0.1959
0.45 66.0 -0.2749 0.1785
0.45 222.0 -0.0018 0.2201
0.45 234.0 -0.3487 0.2009
0.45 246.0 -0.0454 0.2078
0.45 258.0 -0.2045 0.2216
0.55 30.0 -0.456 0.2368
0.55 42.0 0.1689 0.1956
0.55 54.0 0.0477 0.1986
0.55 66.0 -0.0807 0.2538
0.55 162.0 -0.3738 0.1987
0.55 174.0 -0.0297 0.2578
0.55 222.0 -0.0025 0.2184
0.55 234.0 0.0351 0.1857
0.55 246.0 -0.1593 0.169
0.55 258.0 -0.4105 0.2289
0.65 150.0 -0.2404 0.2216
0.65 162.0 0.0782 0.2301
0.65 174.0 0.0053 0.2303
0.65 222.0 0.1039 0.2013
0.65 234.0 -0.025 0.1491
0.65 246.0 -0.0847 0.1651
0.65 258.0 0.0424 0.1843
0.75 42.0 -0.2074 0.1929
0.75 162.0 -0.0371 0.2382
0.75 222.0 -0.0072 0.1937
0.75 234.0 -0.138 0.1789
0.75 246.0 0.125 0.1468
0.75 258.0 -0.1995 0.2186
0.85 222.0 -0.0547 0.1848
0.85 234.0 -0.1675 0.1951
0.85 246.0 -0.1569 0.1688
0.85 258.0 -0.148 0.1721