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Search for bottom-type vectorlike quark pair production in dileptonic and fully hadronic final states in proton-proton collisions at √s = 13 TeV

CMS Collaboration; Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; ... mehr

Abstract:

A search is described for the production of a pair of bottom-type vectorlike quarks (𝐵 VLQs) with mass greater than 1000 GeV. Each 𝐵 VLQ decays into a 𝑏 quark and a Higgs boson, a 𝑏 quark and a 𝑍 boson, or a 𝑡 quark and a 𝑊 boson. This analysis considers both fully hadronic final states and those containing a charged lepton pair from a 𝑍 boson decay. The products of the 𝐻→𝑏⁢𝑏 boson decay and of the hadronic 𝑍 or 𝑊 boson decays can be resolved as two distinct jets or merged into a single jet, so the final states are classified by the number of reconstructed jets. The analysis uses data corresponding to an integrated luminosity of 138  fb−1 collected in proton-proton collisions at √𝑠=13  TeV with the CMS detector at the LHC from 2016 to 2018. No excess over the expected background is observed. Lower limits are set on the 𝐵 VLQ mass at the 95% confidence level. These depend on the 𝐵 VLQ branching fractions and are 1570 and 1540 GeV for 100% 𝐵→𝑏⁢𝐻 and 100% 𝐵→𝑏⁢𝑍, respectively. In most cases, the mass limits obtained exceed previous limits by at least 100 GeV.


Verlagsausgabe §
DOI: 10.5445/IR/1000176263
Veröffentlicht am 14.11.2024
Originalveröffentlichung
DOI: 10.1103/PhysRevD.110.052004
Scopus
Zitationen: 5
Web of Science
Zitationen: 3
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Scientific Computing Center (SCC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2024
Sprache Englisch
Identifikator ISSN: 2470-0010, 2470-0029
KITopen-ID: 1000176263
HGF-Programm 51.11.01 (POF IV, LK 01) Teilchenphysik
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 110
Heft 5
Seiten Art.-Nr.: 052004
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 17.09.2024
Nachgewiesen in arXiv
Web of Science
OpenAlex
Scopus
Dimensions
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