CLAS Physics Database

Measurement E151M2873

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: 0.0349
Q2: 0.0415 GeV2
W: 1565.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6191

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 222.0 0.2367 0.4022
0.65 150.0 0.3058 0.3189
0.65 222.0 0.279 0.4082
0.65 234.0 0.4225 0.3148
0.65 246.0 -0.197 0.3996
0.75 222.0 -0.2675 0.3043
0.75 234.0 -0.4588 0.2905
0.75 246.0 0.6499 0.3589
0.85 222.0 0.1309 0.3532
0.85 234.0 0.154 0.2934
0.55 234.0 -0.4492 0.2513
0.65 150.0 -0.0609 0.2696
0.65 222.0 0.1007 0.2589
0.65 234.0 0.166 0.2517
0.75 234.0 -0.0976 0.2526
0.75 246.0 -0.0409 0.2411
0.85 138.0 0.0985 0.2682
0.85 222.0 0.24 0.2473
0.85 246.0 0.101 0.2756