CLAS Physics Database

Measurement E151M3118

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: 0.0592
Q2: 0.0707 GeV2
W: 1625.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7962

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 282.0 -0.2937 0.2692
0.45 78.0 0.0174 0.2444
0.45 270.0 0.0292 0.2185
0.55 90.0 -0.5092 0.2437
0.55 270.0 -0.2084 0.2553
0.65 114.0 -0.1653 0.2138
0.65 126.0 -0.0446 0.2304
0.65 150.0 -0.1977 0.265
0.65 210.0 -0.0622 0.2633
0.65 222.0 0.3496 0.2221
0.65 270.0 -0.0382 0.2701
0.65 282.0 -0.1981 0.2559
0.65 294.0 -0.2413 0.2646
0.75 66.0 0.546 0.225
0.75 114.0 0.1117 0.275
0.75 126.0 -0.1794 0.2435
0.75 138.0 0.1678 0.2591
0.75 210.0 -0.19 0.2434
0.75 222.0 -0.055 0.2319
0.75 234.0 0.0829 0.2538
0.75 270.0 -0.1199 0.2973
0.75 282.0 -0.0242 0.213
0.85 102.0 0.1895 0.2398
0.85 114.0 -0.1215 0.2117
0.85 198.0 -0.0494 0.2172
0.85 210.0 -0.0639 0.2369
0.85 222.0 -0.5472 0.1888
0.85 234.0 -0.0385 0.2214
0.85 246.0 0.0352 0.2558
0.95 222.0 0.5196 0.2522