CLAS Physics Database

Measurement E151M3243

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: 0.5207
Q2: 0.2915 GeV2
W: 1385.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8964

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.85 102.0 -0.1633 0.246 0.0302
0.85 222.0 -0.5926 0.2259 0.0323
0.85 258.0 -0.397 0.2454 0.031
0.85 306.0 0.3327 0.2437 0.0307
0.95 270.0 0.1342 0.2113 0.0301
0.95 294.0 -0.6126 0.2028 0.0324
0.65 102.0 -0.3346 0.2387 0.0307
0.75 102.0 0.1217 0.2653 0.0301
0.75 270.0 -0.0182 0.262 0.03
0.85 258.0 0.3864 0.2379 0.031
0.85 270.0 0.327 0.2452 0.0307
0.85 282.0 -0.3583 0.2253 0.0308
0.85 294.0 -0.0557 0.2252 0.03
0.95 282.0 0.399 0.2508 0.031