Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at √s=13 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510955" target="_blank" >RIV/00216208:11320/25:10510955 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=U0cIfwLNPB" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=U0cIfwLNPB</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP04(2025)109" target="_blank" >10.1007/JHEP04(2025)109</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at √s=13 TeV
Popis výsledku v původním jazyce
A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at root s = 13 TeV, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of 101 fb(-1), is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell-Yan pair production of fourth generation (tau ') leptons with an electric charge equal to or twice the absolute value of the electron charge (e). An interpretation of a Z' boson decaying to two tau ' leptons with an electric charge equal to 2e is presented for the first time. The 95% confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
Název v anglickém jazyce
Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at √s=13 TeV
Popis výsledku anglicky
A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at root s = 13 TeV, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of 101 fb(-1), is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell-Yan pair production of fourth generation (tau ') leptons with an electric charge equal to or twice the absolute value of the electron charge (e). An interpretation of a Z' boson decaying to two tau ' leptons with an electric charge equal to 2e is presented for the first time. The 95% confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10300 - Physical sciences
Návaznosti výsledku
Projekt
<a href="/cs/project/LM2023040" target="_blank" >LM2023040: Výzkumná infrastruktura pro experimenty v CERN</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Svazek periodika
2025
Číslo periodika v rámci svazku
04
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
46
Strana od-do
109
Kód UT WoS článku
001489180100001
EID výsledku v databázi Scopus
2-s2.0-105012467011