Charged-hadron identification at Belle II

Adachi, Ichiro (author), Borah, Jyotirmoi (author), Bračko, Marko (author), Korpar, Samo (author), Križan, Peter (author), Pestotnik, Rok (author), Podobnik, Tomaž (author), Šantelj, Luka (author), Starič, Marko (author)

The Belle II experiment’s ability to identify particles critically affects the sensitivity of its measurements. We describe Belle II’s algorithms for identifying charged particles and evaluate their performance in separating pions, kaons, and protons using 426 fb$^{-1}$ of data collected at the energy-asymmetric $e^+e^-$ collider SuperKEKB in 2019–2022 at center-of-mass energies at and near the mass of the $\Upsilon$.

• Language: English
• Keywords: experimental physics, physics of elementary particles
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: 27 str.
• Numbering: Vol. 85, art. no. 1237
• PID: 20.500.12556/RUL-178841
• UDC: 539.1
• ISSN on article: 1434-6052
• DOI: 10.1140/epjc/s10052-025-14627-7
• COBISS.SI-ID: 266670083
• Publication date in RUL: 30.01.2026

Record is a part of a journal

• Title: European physical journal : Particles and fields
• Shortened title: Eur. phys. j., C Part. fields
• Publisher: Springer
• ISSN: 1434-6052
• COBISS.SI-ID: 516110361

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: eksperimentalna fizika, fizika osnovnih delcev

Projects

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: J1-50010
• Name: Eksperimentalno preverjanje leptonske univerzalnosti in izboljšava metod identifikacije delcev pri eksperimentu Belle II

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P1-0135
• Name: Eksperimentalna fizika osnovnih delcev