CLAS Physics Database

Measurement E151M3623

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: 0.1017
Q2: 0.2445 GeV2
W: 1805.0 GeV
Ebeam: 2.999 GeV
ε: 0.8119

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 222.0 0.0309 0.2821
0.85 78.0 0.3193 0.2802
0.85 90.0 0.0578 0.2326
0.85 102.0 0.2781 0.2392
0.85 186.0 -0.2813 0.2682
0.85 198.0 0.2352 0.2468
0.85 210.0 0.1261 0.2418
0.85 222.0 -0.0806 0.2456
0.85 234.0 -0.1168 0.2355
0.95 198.0 0.3114 0.2412
0.95 210.0 -0.0313 0.2661
0.95 222.0 -0.2937 0.2335
0.95 234.0 -0.199 0.2607