CLAS Physics Database

Measurement E151M3588

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: 0.1958
Q2: 0.4155 GeV2
W: 1715.0 GeV
Ebeam: 2.999 GeV
ε: 0.8206

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 102.0 -0.6576 0.194
0.75 210.0 -0.1458 0.258
0.75 234.0 0.1462 0.2574
0.85 66.0 0.6213 0.1824
0.85 90.0 0.2517 0.2419
0.85 198.0 -0.3442 0.241
0.85 210.0 -0.3779 0.2673
0.85 222.0 -0.2338 0.2403
0.85 234.0 -0.0821 0.2105
0.85 246.0 -0.4043 0.2039
0.85 258.0 0.2766 0.2744
0.85 270.0 0.1873 0.2729
0.95 210.0 -0.0536 0.2675
0.95 222.0 -0.2766 0.2232
0.95 234.0 -0.1548 0.2125
0.95 246.0 -0.3065 0.2346
0.95 258.0 0.0204 0.2161
0.95 270.0 -0.1405 0.2646
0.95 282.0 0.0582 0.2319