CLAS Physics Database

Measurement E151M3120

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: 0.0804
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] ALU uncertainty syst. uncert.
0.45 270.0 0.1503 0.2688 0.0302
0.45 282.0 0.1673 0.2688 0.0302
0.55 126.0 0.3237 0.2582 0.0307
0.55 210.0 -0.2314 0.2726 0.0304
0.55 270.0 0.1018 0.2624 0.0301
0.65 114.0 0.1723 0.2581 0.0302
0.65 126.0 0.301 0.2608 0.0306
0.65 138.0 -0.0198 0.2775 0.03
0.65 210.0 -0.2336 0.2683 0.0304
0.75 210.0 0.4588 0.2076 0.0314
0.75 222.0 0.1867 0.2545 0.0302
0.75 234.0 0.015 0.2795 0.03
0.75 246.0 -0.0221 0.2769 0.03
0.75 282.0 -0.0703 0.2501 0.03
0.75 294.0 0.0002 0.2323 0.03
0.85 102.0 0.642 0.1925 0.0326
0.85 114.0 0.5099 0.2472 0.0317
0.85 210.0 -0.1702 0.2538 0.0302
0.85 222.0 0.1749 0.2301 0.0302
0.85 234.0 0.4598 0.2006 0.0314
0.85 246.0 -0.1617 0.2655 0.0302
0.95 234.0 0.3622 0.2194 0.0309