CLAS Physics Database

Measurement E151M3092

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: 0.1805
Q2: 0.205 GeV2
W: 1565.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7866

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 114.0 -0.2132 0.2584
0.65 126.0 -0.0 0.2773
0.65 222.0 -0.2907 0.2549
0.65 294.0 0.1955 0.2527
0.75 102.0 0.0379 0.2705
0.75 126.0 -0.3476 0.2304
0.75 222.0 -0.0466 0.2394
0.75 246.0 0.0994 0.2508
0.85 222.0 0.0422 0.2174
0.85 234.0 -0.2774 0.1969
0.85 246.0 0.2145 0.2384
0.85 258.0 -0.0765 0.228
0.85 270.0 -0.1861 0.2682
0.95 210.0 -0.1776 0.2467
0.95 246.0 0.1905 0.2327
0.95 270.0 -0.2233 0.2356