CLAS Physics Database

Measurement E151M3621

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: 0.077
Q2: 0.1715 GeV2
W: 1805.0 GeV
Ebeam: 2.999 GeV
ε: 0.8287

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 114.0 -0.3558 0.2565
0.75 90.0 0.6328 0.2444
0.75 102.0 0.2963 0.2571
0.75 210.0 -0.0996 0.2224
0.85 90.0 0.0461 0.249
0.85 102.0 0.5588 0.2195
0.85 126.0 -0.0077 0.2668
0.85 174.0 0.496 0.2119
0.85 186.0 0.161 0.2145
0.85 198.0 0.222 0.1923
0.85 210.0 -0.0267 0.2239
0.85 222.0 -0.0195 0.2421
0.85 234.0 -0.1556 0.2097
0.95 186.0 -0.1387 0.2709
0.95 198.0 -0.536 0.2154
0.95 210.0 0.1492 0.2445
0.95 222.0 -0.4902 0.2197