CLAS Physics Database

Measurement E151M3066

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: 0.0397
Q2: 0.0291 GeV2
W: 1535.0 GeV
Ebeam: 1.9889 GeV
ε: 0.875

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.35 78.0 0.1031 0.2362 0.0301
0.35 282.0 -0.0631 0.2208 0.03
0.45 66.0 -0.0384 0.2948 0.03
0.45 78.0 0.3375 0.2051 0.0308
0.45 90.0 -0.0315 0.2373 0.03
0.45 126.0 -0.0549 0.2582 0.03
0.45 270.0 0.2274 0.223 0.0303
0.45 282.0 -0.0554 0.282 0.03
0.55 78.0 -0.1509 0.2394 0.0302
0.55 90.0 -0.0904 0.2608 0.0301
0.55 114.0 0.0669 0.232 0.03
0.55 126.0 0.2267 0.258 0.0303
0.55 222.0 -0.0452 0.2422 0.03
0.55 270.0 0.5188 0.1704 0.0317
0.55 282.0 -0.1797 0.2533 0.0302
0.65 114.0 0.4529 0.2202 0.0313
0.65 126.0 -0.1165 0.22 0.0301
0.65 138.0 -0.2261 0.2236 0.0303
0.65 150.0 0.4286 0.2234 0.0312
0.65 198.0 -0.2931 0.236 0.0306
0.65 210.0 0.3523 0.2449 0.0308
0.65 222.0 0.174 0.2279 0.0302
0.75 126.0 -0.881 0.1693 0.0348
0.75 138.0 0.2146 0.2533 0.0303
0.75 150.0 0.3219 0.2677 0.0307
0.75 210.0 0.3313 0.2384 0.0307
0.75 222.0 -0.2685 0.2172 0.0305
0.75 234.0 -0.0749 0.2066 0.03
0.75 270.0 0.074 0.2972 0.03
0.75 282.0 0.1669 0.2589 0.0302
0.85 198.0 -0.1223 0.2802 0.0301
0.85 210.0 0.0198 0.2494 0.03
0.85 222.0 -0.008 0.2151 0.03
0.85 234.0 -0.1816 0.2087 0.0302
0.85 246.0 0.0438 0.2818 0.03