CLAS Physics Database

Measurement E151M2610

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: 0.0134
Q2: 0.0084 GeV2
W: 1445.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6652

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 30.0 0.0056 0.2431
0.35 42.0 0.2238 0.2046
0.35 54.0 -0.1916 0.1935
0.45 30.0 -0.0292 0.2528
0.45 42.0 -0.0183 0.1993
0.45 54.0 0.0974 0.1685
0.45 66.0 0.0739 0.22
0.45 222.0 -0.2312 0.2549
0.55 30.0 -0.0911 0.2171
0.55 42.0 -0.1543 0.1693
0.55 54.0 0.2916 0.189
0.55 66.0 -0.2376 0.2385
0.55 162.0 0.2194 0.2385
0.55 210.0 -0.0851 0.2507
0.55 222.0 -0.0479 0.1932
0.55 234.0 0.0798 0.1802
0.55 246.0 -0.2942 0.2078
0.55 258.0 0.1229 0.2476
0.65 138.0 -0.2747 0.2186
0.65 150.0 0.1462 0.2129
0.65 174.0 0.3824 0.2419
0.65 210.0 -0.2004 0.2209
0.65 222.0 0.1581 0.2052
0.65 234.0 -0.3115 0.1631
0.65 246.0 -0.0315 0.2001
0.75 210.0 -0.3828 0.2288
0.75 222.0 -0.1759 0.2138
0.75 234.0 0.0817 0.1967
0.75 246.0 -0.0823 0.1849
0.85 210.0 0.4554 0.204
0.85 222.0 -0.3203 0.2064
0.85 234.0 -0.3934 0.1709
0.85 246.0 -0.3232 0.2058