CLAS Physics Database

Measurement E151M2810

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: 0.0162
Q2: 0.0101 GeV2
W: 1475.0 GeV
Ebeam: 1.3383 GeV
ε: 0.7764

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 42.0 0.6331 0.242
0.55 162.0 0.0844 0.2821
0.55 222.0 -0.1584 0.2035
0.55 234.0 -0.1705 0.1937
0.65 126.0 -0.22 0.2839
0.65 138.0 0.0237 0.2712
0.65 222.0 -0.1405 0.1883
0.75 222.0 0.1867 0.2293
0.75 234.0 0.1487 0.2602
0.75 246.0 0.2052 0.2492
0.85 222.0 -0.0376 0.2815
0.85 234.0 -0.1196 0.2739
0.65 234.0 -0.1162 0.3292
0.75 210.0 -0.3953 0.2807
0.75 222.0 -0.2672 0.3748
0.75 234.0 -0.4363 0.3089
0.85 210.0 -0.1168 0.3247
0.85 222.0 -0.0207 0.3833
0.85 234.0 0.2577 0.3387