Speaker
Description
The Standard Model (SM) describes elementary particles and their interactions but may be part of a more general theory. The Belle II experiment tests the SM by studying $B$ meson decays, particularly those with missing energy, which are sensitive to new physics.
A recent Belle II result on $B \to K \nu \bar{\nu}$ shows a deviation from the SM, increasing interest in similar decays. At DESY, an analysis of $B^0 \to \rho^0 (\to \pi^+\pi^-) \nu \bar{\nu}$ is underway, where precise simulation is crucial. A key challenge is background from $a_1(1260) \to \pi \pi$, which mimics $\rho^0$ but has poorly known properties.
This project focuses on improving Belle II simulation by studying $a_1(1260)$ decays using control samples and real data. The student will reconstruct and identify these decays, reducing systematic uncertainties in the analysis. Basic Python knowledge is required.
Special Qualifications
Basic Python knowledge
| Group | FH-BELLE |
|---|---|
| Project Category | B1. Physics data analysis and performance (software-oriented) |
| DESY Site | Hamburg |
