CLAS Physics Database

Measurement E151M2791

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: 0.0194
Q2: 0.0101 GeV2
W: 1445.0 GeV
Ebeam: 1.3383 GeV
ε: 0.8102

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 222.0 -0.1369 0.2693 0.0301
0.55 234.0 -0.4033 0.1338 0.0329
0.65 138.0 0.6705 0.2742 0.0329
0.65 222.0 0.0514 0.2865 0.03
0.65 234.0 -0.0434 0.21 0.0303
0.75 162.0 -0.3938 0.3204 0.031
0.75 222.0 -0.3059 0.3991 0.0306
0.75 234.0 0.5364 0.2284 0.0319
0.85 210.0 0.0257 0.3835 0.03
0.85 222.0 -0.1491 0.3419 0.0301
0.85 234.0 0.3947 0.3219 0.031
0.65 246.0 -0.3547 0.2585 0.0308
0.75 234.0 -0.4782 0.2067 0.0315
0.75 246.0 -0.1226 0.2818 0.0301
0.85 234.0 -0.18 0.273 0.0302