PhD Thesis
In case you want to know more about my PhD analysis, here is my thesis and its abstract.
This thesis presents a precise measurement of the CKM matrix element \(V_{us}\) using data collected at the Belle II
experiment situated at the SuperKEKB electron-positron collider in Tsukuba, Japan. The measurement employs the
ratio of branching fractions of tau lepton decays, denoted as \(R_{K/\pi}\), with both pion and kaon mesons in the final
state, given by \[R_{K/\pi} = \mathcal{B}(\tau \to K \nu_\tau)/\mathcal{B}(\tau \to \pi \nu_\tau).\]
Selection criteria involve a tag side consisting of three
charged particles, defining an overall 3x1- prong topology. The preliminary obtained result,
\(R_{K/\pi}\) = 0.06438 ± 0.00080, corresponds to a \(|V_{us}|\) value of 0.2229 ± 0.0017, and takes into
account only the main systematic uncertainty sources. Recognizing the systematic nature of this
measurement, a dedicated study addressing leading systematic uncertainties is undertaken.
Specifically, a performance assessment of pion
identification corrections is conducted to enhance the reliability and precision of the measurement.
As my university did not allow PhD candidates to correct their thesis, I propose here an Errata.
Academic and Research Contributions
Publications
Test of light-lepton universality in tau decays with the Belle II experiment
August 2024, JHEP08(2024)205 
Results of the 2022 ECFA Early-Career Researchers Panel survey on career prospects and diversity
April 2024, ArXiv:2404.02074
Recent tau and dark-sector results at Belle II
November 2023, Proceedings of Science
Search for an Invisible Z' in a Final State with Two Muons and Missing Energy at Belle II
June 2023, Phys.Rev.Lett.130,231801
The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021 -- 2022
December 2022, ArXiv:2212.11238
Snowmass White Paper: Belle II physics reach and plans for the next decade and beyond
September 2022, ArXiv2207.06307
Talks
Measurement of |Vus| and Lepton Flavour Universality (LFU) test using 3x1-prong tau decays
June 2024, Tsukuba (Japan), Remote from Vienna (Austria), Belle II General Meeting (B2GM)
Status of |Vus|
June 2024, Tsukuba (Japan), Remote from Vienna (Austria), Belle II General Meeting (B2GM)
Hadron ID Systematics from tau Decays
January 2024, Tsukuba (Japan), Remote from Vienna (Austria), Belle II General Meeting (B2GM)
Status of |Vus|
October 2023, Tsukuba (Japan), Belle II General Meeting (B2GM)
Recent tau and dark-sector results at Belle II
May - June 2023, Lyon (France), 21st Conference on Flavor Physics and CP Violation (FPCP 2023)
Particle identification (PID) and precision tau physics at Belle II
November 2022, Prague (Czech Republic), Jennifer2 General Meeting
hID performance in tau decays
October 2022, Rome (Italy), Belle II General Meeting (B2GM)
Grants
Multilateral Scientific and Technological Cooperation in the Danube region
July 2023 - June 2025, Austria - Czech Republic - France, Travel grant
Les Rencontres de Moriond, QCD session
March 2023, La Thuile (Italy), Conference grant
La Thuile 2023 - Les Rencontres de Physique de la Vallée d'Aoste
March 2023, La Thuile (Italy), Conference grant
Volunteering
XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP 2023)
August - September 2023, Vienna (Austria), Indico Agenda
Dark Matter day 2022
October 2022, Vienna (Austria), Program
IPA2022: Interplay between Particle and Astroparticle physics 2022
September 2022, Vienna (Austria), Indico Agenda
Lange Nacht der Forschung (tr. long night of research)
May 2022, Vienna (Austria), Article