High Energy Physics Group
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About
The High Energy Physics (HEP) group at the University of Louisville is studying flavor physics of heavy quarks and leptons and searching for dark sector candidates at the intensity frontier with data collected by the Belle II experiment at the asymmetric electron-positron collider, the SuperKEKB, located at KEK in Tsukuba, Japan.
Belle II is the next-generation flavor physics experiment operating around 10.58 Giga-electronvolts (GeV) with a mission to discover new physics using large samples of beauty and charmed hadrons, as well as tau leptons. Belle II makes precise measurements of the parameters of the electroweak interaction, studies exotic hadrons and searches for new phenomena beyond the Standard Model of particle physics. The principal focus of the group is to search for new physics beyond the Standard Model with tau leptons, K-long and the muon detector operations and Monte Carlo Event generators. The group is also involved in averaging fundamental properties of the tau lepton, such as mass, lifetime, branching fractions and upper limits, on behalf of the Heavy Flavor Averaging Group and the Particle Data Group.
Team
Swagato Banerjee, Professor, Principal Investigator
- Dr. Sourav Patra, postdoc
- Naveen Kumar Baghel, graduate student
- Andrew Jackson Davis, undergraduate student
Our Work
- Belle II
- SuperKEKB
- KEK, Japan
- Lepton flavor violation
- Dark sector searches
- Tau physics
- K-long and muon detector
- Monte Carlo Event Generator
- HFLAV
- PDG
- Searches for lepton flavor violation and dark sector particles
- Searches for Physics beyond the Standard Model with tau leptons
- "Electron-positron, parton-parton, and photon-photon production of tau-lepton pairs: anomalous magnetic and electric dipole moments spin effects" by Sw. Banerjee, A. Korchin, E Richter-Was and Z. Was, Phys. Rev. D 109 (2024) 1, 013002.
- “Search for a dark leptophilic scalar produced in association with tau+tau- pairs in e+ e- annihilation at center-of-mass energies near 10.58 GeV” by D. Biswas, Sw. Banerjee, et. al. (Belle collaboration), Phys. Rev. D 109 (2024) 3, 032002.
- “Tau branching fractions” in “Review of particle physics” by S. Navas, et. al. (Particle Data Group), Phys. Rev. D 110 (2024) 3, 030001.