CLAS Physics Database

Measurement E151M3323

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: 0.1699
Q2: 0.1715 GeV2
W: 1565.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8519

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 114.0 0.1145 0.2599
0.75 114.0 0.3356 0.253
0.85 78.0 -0.1673 0.2598
0.85 222.0 0.1512 0.2503
0.85 246.0 -0.3397 0.2183
0.95 258.0 0.0236 0.2443
0.55 114.0 0.1415 0.2539
0.65 126.0 0.3488 0.244
0.75 114.0 -0.1957 0.2369
0.75 126.0 -0.0305 0.2399
0.85 78.0 0.0203 0.2607
0.85 222.0 -0.4822 0.2437
0.85 234.0 -0.3896 0.2082
0.85 246.0 -0.4646 0.2282
0.85 258.0 -0.2374 0.255
0.95 210.0 0.0133 0.2522
0.95 258.0 -0.0386 0.2495