Kink Finder at Belle II
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917337097043968 |
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| author | Bodrov, Denis Xu, Xinping Gavrilov, Dmitrii Pakhlov, Pavel Bertacchi, Valerio Bilka, Tadeas Biswas, Arkodip Casarosa, Giulia Cheema, Priyanka Corona, Luigi De Pietro, Giacomo Dong, Thanh V. Ecker, Patrick Ferber, Torben Godang, Romulus Heidelbach, Alexander Lam, Tommy Laurenza, Martina Lueck, Thomas Massaccesi, Ludovico Meier, Frank Reuter, Lea Scavino, Bianca Schoenning, Karin Skorupa, Justin Spataro, Stefano Tran, Tien Manh Vobbilisetti, Vidya Wessel, Christian Wiechczynski, Jaroslaw |
| author_facet | Bodrov, Denis Xu, Xinping Gavrilov, Dmitrii Pakhlov, Pavel Bertacchi, Valerio Bilka, Tadeas Biswas, Arkodip Casarosa, Giulia Cheema, Priyanka Corona, Luigi De Pietro, Giacomo Dong, Thanh V. Ecker, Patrick Ferber, Torben Godang, Romulus Heidelbach, Alexander Lam, Tommy Laurenza, Martina Lueck, Thomas Massaccesi, Ludovico Meier, Frank Reuter, Lea Scavino, Bianca Schoenning, Karin Skorupa, Justin Spataro, Stefano Tran, Tien Manh Vobbilisetti, Vidya Wessel, Christian Wiechczynski, Jaroslaw |
| contents | We present a track-finding algorithm for the Belle II experiment that specifically targets so-called kinks: signatures of charged particles decaying or scattering in-flight in the detector material, resulting in a sudden and significant change of the particle's flight direction. Our benchmark studies of this Kink Finder show that the reconstruction efficiency for such signatures is about 40%, compared to a value of around 11% for the standard Belle II track-finding algorithm. Our studies also show that the Kink Finder significantly improves the resolution of the secondary track parameters, suppresses the number of cloned tracks, and reduces the PID misidentification rates for kaon and pions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14171 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Kink Finder at Belle II Bodrov, Denis Xu, Xinping Gavrilov, Dmitrii Pakhlov, Pavel Bertacchi, Valerio Bilka, Tadeas Biswas, Arkodip Casarosa, Giulia Cheema, Priyanka Corona, Luigi De Pietro, Giacomo Dong, Thanh V. Ecker, Patrick Ferber, Torben Godang, Romulus Heidelbach, Alexander Lam, Tommy Laurenza, Martina Lueck, Thomas Massaccesi, Ludovico Meier, Frank Reuter, Lea Scavino, Bianca Schoenning, Karin Skorupa, Justin Spataro, Stefano Tran, Tien Manh Vobbilisetti, Vidya Wessel, Christian Wiechczynski, Jaroslaw High Energy Physics - Experiment Instrumentation and Detectors We present a track-finding algorithm for the Belle II experiment that specifically targets so-called kinks: signatures of charged particles decaying or scattering in-flight in the detector material, resulting in a sudden and significant change of the particle's flight direction. Our benchmark studies of this Kink Finder show that the reconstruction efficiency for such signatures is about 40%, compared to a value of around 11% for the standard Belle II track-finding algorithm. Our studies also show that the Kink Finder significantly improves the resolution of the secondary track parameters, suppresses the number of cloned tracks, and reduces the PID misidentification rates for kaon and pions. |
| title | Kink Finder at Belle II |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2511.14171 |