CLAS Physics Database

Measurement E151M2487

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: 0.0598
Q2: 0.0101 GeV2
W: 1265.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8964

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 54.0 -0.1174 0.2594
0.45 54.0 0.0564 0.2482
0.55 42.0 0.3874 0.2171
0.55 54.0 0.2191 0.2493
0.55 234.0 -0.2676 0.181
0.55 246.0 0.0154 0.1691
0.55 258.0 0.1102 0.1725
0.55 270.0 0.0837 0.1842
0.65 150.0 0.1154 0.2369
0.65 162.0 0.3211 0.2215
0.65 174.0 0.3443 0.2287
0.65 186.0 -0.051 0.2407
0.65 222.0 0.0527 0.2133
0.65 234.0 0.0609 0.1876
0.65 246.0 -0.021 0.1446
0.65 258.0 -0.1722 0.1459
0.65 270.0 0.122 0.2068
0.75 150.0 0.039 0.2096
0.75 162.0 -0.2514 0.203
0.75 186.0 0.6677 0.2045
0.75 222.0 -0.2732 0.2216
0.75 234.0 0.0505 0.1615
0.75 246.0 -0.0339 0.1461
0.75 258.0 -0.067 0.1528
0.75 270.0 -0.274 0.1776
0.85 222.0 -0.2663 0.2562
0.85 234.0 -0.4275 0.1967
0.85 246.0 -0.1242 0.1931
0.85 258.0 0.0189 0.2098