CLAS Physics Database

Measurement E151M2824

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: 0.1451
Q2: 0.1205 GeV2
W: 1475.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6854

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 138.0 0.0241 0.2562
0.55 222.0 0.2991 0.2215
0.55 234.0 -0.1577 0.2861
0.55 246.0 0.1485 0.1776
0.55 258.0 -0.1564 0.2269
0.65 126.0 0.5546 0.1441
0.65 138.0 0.2853 0.1903
0.65 150.0 -0.1752 0.2403
0.65 222.0 -0.1866 0.2244
0.65 234.0 0.2982 0.1715
0.65 246.0 -0.0166 0.1743
0.65 258.0 -0.2713 0.1783
0.75 126.0 -0.0813 0.2006
0.75 138.0 0.0685 0.1986
0.75 150.0 0.2685 0.2426
0.75 210.0 0.2236 0.3339
0.75 222.0 -0.726 0.2173
0.75 234.0 -0.3216 0.1532
0.75 246.0 -0.2734 0.1759
0.75 258.0 0.0213 0.1583
0.85 126.0 0.304 0.3435
0.85 150.0 -0.1834 0.2547
0.85 234.0 -0.09 0.1931
0.85 246.0 -0.0297 0.1574
0.85 258.0 -0.1567 0.1413
0.85 270.0 0.4737 0.1469
0.95 102.0 0.2149 0.2672
0.95 114.0 0.0748 0.2092
0.95 246.0 0.0254 0.2183
0.95 258.0 0.0317 0.2356
0.95 270.0 0.1819 0.3649