CLAS Physics Database

Measurement E151M2808

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: 0.237
Q2: 0.205 GeV2
W: 1445.0 GeV
Ebeam: 1.3383 GeV
ε: 0.655

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 126.0 -0.3374 0.4311
0.65 246.0 -0.0531 0.3665
0.75 222.0 0.3004 0.3864
0.75 234.0 0.4971 0.3047
0.75 246.0 -0.2191 0.3074
0.75 258.0 -0.7653 0.198
0.75 270.0 -0.0625 0.3239
0.85 234.0 0.3929 0.3618
0.85 246.0 -0.1205 0.3394
0.85 258.0 -0.0286 0.3878
0.85 270.0 -0.1293 0.3628
0.85 282.0 0.1994 0.3961
0.95 78.0 0.0168 0.3483
0.95 246.0 -0.5672 0.3358
0.95 270.0 -0.5584 0.389
0.95 282.0 -0.3231 0.3879
0.55 258.0 -0.321 0.2688
0.65 258.0 -0.0296 0.279
0.75 126.0 0.0312 0.2296
0.75 138.0 0.4684 0.2372
0.75 222.0 -0.0604 0.2717
0.75 258.0 -0.324 0.2284
0.75 270.0 0.0761 0.2811
0.85 246.0 -0.1635 0.258
0.85 270.0 -0.0288 0.2783
0.85 282.0 -0.2907 0.2397
0.95 282.0 -0.137 0.2791