CLAS Physics Database

Measurement E151M676

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: AUL
εL: 0.0804
Q2: 0.101 GeV2
W: 1625.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7831

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.45 270.0 2.1625 0.7591
0.45 282.0 0.7806 0.8025
0.55 126.0 1.6122 0.9011
0.55 210.0 0.9789 0.8879
0.55 270.0 -0.2692 0.7186
0.65 114.0 -0.5235 0.7191
0.65 126.0 -0.8468 0.6767
0.65 138.0 -0.5168 0.7573
0.65 210.0 1.2711 0.8296
0.75 210.0 1.9594 0.6265
0.75 222.0 1.3431 0.7868
0.75 234.0 0.1635 0.7971
0.75 246.0 1.5813 0.837
0.75 282.0 0.3689 0.7163
0.75 294.0 -0.6205 0.572
0.85 102.0 -1.1553 0.6036
0.85 114.0 -1.6921 0.5479
0.85 210.0 1.7366 0.7673
0.85 222.0 1.3136 0.69
0.85 234.0 0.4267 0.6557
0.85 246.0 0.6645 0.7888
0.95 234.0 -0.5821 0.524