CLAS Physics Database

Measurement E151M2734

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: 0.0402
Q2: 0.0121 GeV2
W: 1355.0 GeV
Ebeam: 1.3383 GeV
ε: 0.8877

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 222.0 0.1757 0.2366 0.0302
0.65 234.0 -0.1605 0.2243 0.0302
0.65 246.0 0.1497 0.2336 0.0301
0.75 138.0 0.3617 0.2572 0.0309
0.75 222.0 0.0438 0.2738 0.03
0.75 234.0 0.2466 0.2293 0.0304
0.75 246.0 -0.0032 0.2471 0.03
0.85 234.0 -0.6266 0.2255 0.0325
0.85 246.0 -0.2905 0.26 0.0306
0.55 246.0 -0.0818 0.42 0.03
0.65 234.0 -0.1429 0.3358 0.0301
0.75 234.0 -0.2749 0.2886 0.0305
0.75 246.0 -0.0646 0.3237 0.03
0.85 234.0 -0.3934 0.3997 0.031