CLAS Physics Database

Measurement E151M2525

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: 0.0088
Q2: 0.0023 GeV2
W: 1325.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8482

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 234.0 0.126 0.2073
0.55 246.0 -0.0494 0.2089
0.65 234.0 -0.1989 0.1987
0.65 246.0 0.3907 0.227
0.65 258.0 -0.2295 0.2027
0.75 222.0 -0.3624 0.231
0.75 234.0 0.1904 0.2247
0.75 246.0 -0.1595 0.2075
0.75 258.0 0.0899 0.2672
0.85 222.0 -0.1517 0.2332
0.85 234.0 -0.2284 0.2448
0.85 246.0 0.1576 0.2542