Measurement of the Ratio 𝑅𝐾0𝑆(𝜇) = BR(𝐵0 → 𝜇𝜇𝐾0𝑆)/BR(𝐵0 → 𝐽/𝜓(𝜇𝜇)𝐾0𝑆) with the CMS experiment at CERN
| dc.contributor.author | Nessis, Spyros | en |
| dc.contributor.author | Νέσσης, Σπύρος | el |
| dc.date.accessioned | 2024-11-07T14:37:27Z | |
| dc.date.available | 2024-11-07T14:37:27Z | |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/38526 | |
| dc.identifier.uri | http://dx.doi.org/10.26268/heal.uoi.18231 | |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
| dc.subject | Cern | en |
| dc.subject | b-phys | en |
| dc.subject | b-physics | en |
| dc.subject | Experimental high energy physics | en |
| dc.title | Measurement of the Ratio 𝑅𝐾0𝑆(𝜇) = BR(𝐵0 → 𝜇𝜇𝐾0𝑆)/BR(𝐵0 → 𝐽/𝜓(𝜇𝜇)𝐾0𝑆) with the CMS experiment at CERN | en |
| dc.title | Μέτρηση του Λόγου 𝑅𝐾0𝑆(𝜇) = BR(𝐵0 → 𝜇𝜇𝐾0𝑆)/BR(𝐵0 → 𝐽/𝜓(𝜇𝜇)𝐾0𝑆) στο πείραμα CMS στο CERN | el |
| dc.type | masterThesis | en |
| heal.abstract | This thesis presents a measurement of specific branching functions for the decay of the B0 meson. The blinded measurement of the relative branching ratio 𝑅𝐾0𝑆(𝜇) of the 𝐵0 → 𝜇𝜇𝐾0𝑆 Flavor Changing Neutral Current (FCNC) decay with respect to the tree-level resonant decay 𝐵0 → 𝐽/𝜓(𝜇𝜇)𝐾0𝑆 , as well as the tree-level decay 𝐵0 → 𝜓(2𝑆) (𝜇𝜇)𝐾0𝑆 relative to the tree-level decay 𝐵0 → 𝐽/𝜓(𝜇𝜇)𝐾0𝑆 is also measured. FCNC processes are forbidden at tree-level in the Standard Model with branching functions at the order of magnitude of 10^−7 compared to resonant tree-level processes at the order of magnitude of 10^−4. FCNC decays are an important aspect in searching for New Physics beyond the Standard Model whose effects can affect the value of the 𝑅𝐾0𝑆(𝜇) observable that is measured in this thesis. The data provided for the analysis of this thesis have been recorded by the CMS experiment at CERN LHC during Run 3 at 2022 with center of mass energy √𝑠 = 13.4TeV and nominal integrated luminosity of L = 39.7 𝑓𝑏^−1. This analysis is part of a bigger ongoing project which aims to probe Lepton Flavor Universality by studying 𝑏 → 𝑠𝑋 transitions at the CMS experiment at CERN LHC. | en |
| heal.academicPublisher | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Φυσικής | el |
| heal.academicPublisherID | uoi | el |
| heal.access | free | el |
| heal.advisorName | Fountas, Costas | en |
| heal.classification | High energy physics | en |
| heal.committeeMemberName | Strologas, Ioannis | en |
| heal.committeeMemberName | Kokkas, Panagiotis | en |
| heal.committeeMemberName | Fountas, Costas | en |
| heal.committeeMemberName | Φουντάς, Κωνσταντίνος | el |
| heal.committeeMemberName | Κόκκας, Παναγιώτης | el |
| heal.committeeMemberName | Στρόλογκας, Ιωάννης | el |
| heal.dateAvailable | 2024-11-07T14:38:27Z | |
| heal.fullTextAvailability | true | |
| heal.fullTextAvailability | true | |
| heal.language | en | el |
| heal.numberOfPages | 112 | el |
| heal.publicationDate | 2024-11-06 | |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών | el |
| heal.type | masterThesis | el |
| heal.type.el | Μεταπτυχιακή εργασία | el |
| heal.type.en | Master thesis | en |
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