CLAS Physics Database

Measurement E151M3107

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: 0.1394
Q2: 0.1715 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7773

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 114.0 -0.3541 0.2488
0.65 114.0 0.0741 0.2719
0.75 114.0 0.5422 0.2133
0.75 126.0 -0.0812 0.2659
0.75 210.0 -0.1305 0.24
0.75 222.0 -0.0176 0.276
0.75 246.0 -0.1359 0.2458
0.85 90.0 0.192 0.2135
0.85 102.0 0.3533 0.2494
0.85 234.0 -0.1959 0.2261
0.85 246.0 -0.1984 0.2606
0.85 258.0 0.3306 0.2433
0.95 222.0 0.079 0.2672
0.95 234.0 -0.1669 0.2701
0.95 258.0 -0.1714 0.2788