CLAS Physics Database

Measurement E151M3133

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: 0.0602
Q2: 0.0844 GeV2
W: 1655.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7643

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 282.0 0.1833 0.225
0.65 114.0 -0.128 0.2283
0.65 126.0 -0.3789 0.2454
0.65 198.0 -0.1637 0.2783
0.65 222.0 0.1875 0.2542
0.65 282.0 -0.0842 0.2706
0.65 294.0 0.5882 0.2096
0.75 66.0 0.3912 0.232
0.75 198.0 -0.2066 0.2664
0.75 222.0 -0.3241 0.2372
0.75 234.0 -0.08 0.2397
0.75 282.0 -0.0468 0.1988
0.75 294.0 -0.2217 0.239
0.85 114.0 -0.4762 0.226
0.85 210.0 0.0234 0.2553
0.85 222.0 0.1333 0.2537
0.85 234.0 0.3517 0.264
0.85 246.0 -0.4202 0.2538