CLAS Physics Database

Measurement E151M128

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: AUL
εL: 0.0247
Q2: 0.0101 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7635

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.35 42.0 0.0737 0.8828
0.35 54.0 -0.0424 0.7624
0.45 42.0 -0.0982 0.6125
0.45 54.0 0.0898 0.5809
0.45 222.0 -0.1335 0.7838
0.45 234.0 0.0366 0.7537
0.45 246.0 0.9675 0.8792
0.55 18.0 -1.1573 0.7157
0.55 30.0 0.9735 0.7451
0.55 42.0 -0.1165 0.5213
0.55 54.0 -0.9243 0.5631
0.55 222.0 0.8231 0.6704
0.55 234.0 0.1732 0.6237
0.55 246.0 1.0953 0.6496
0.65 30.0 0.1342 0.8348
0.65 42.0 0.2842 0.7419
0.65 54.0 0.6542 0.6091
0.65 138.0 -0.4145 0.7448
0.65 150.0 0.2689 0.7189
0.65 162.0 -0.6037 0.6474
0.65 210.0 0.7422 0.736
0.65 222.0 -0.1531 0.5392
0.65 234.0 0.4197 0.5092
0.65 246.0 0.2007 0.4928
0.75 138.0 -0.2245 0.7719
0.75 150.0 -0.0382 0.801
0.75 162.0 0.0202 0.8162
0.75 174.0 0.5607 0.877
0.75 210.0 0.4568 0.8412
0.75 222.0 -0.2978 0.5311
0.75 234.0 0.4528 0.5235
0.75 246.0 -0.1665 0.4931
0.75 258.0 0.5641 0.8577
0.85 222.0 -0.4265 0.5857
0.85 234.0 0.962 0.5203
0.85 246.0 0.549 0.5242
0.85 258.0 -0.499 0.6191