Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
| Autor: | CMS Collaboration |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
p p: scattering
data analysis method dijet: mass spectrum neural network 13000 GeV-cms muon: particle identification bottom: particle identification quark: excited state Z': mass: lower limit jet: mass spectrum statistical analysis resonance: hadronic decay CMS Z': model bottom: excited state parametrization dijet: final state CERN LHC Coll track data analysis: jet jet: pair production new particle: production narrow resonance jet: bottom p p: colliding beams jet: final state resonance: production quark: mass: lower limit experimental results |
| DOI: | 10.3204/pubdb-2022-04477 |
| Popis: | A search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a b quark, in proton-proton collisions at $\sqrt{s}$ = 13 TeV. The data set corresponds to an integrated luminosity of 138 fb$^{-1}$ collected with the CMS detector at the LHC. Jets originating from energetic b hadrons are identified through a b tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited b quarks and other resonances decaying to dijet final states containing b quarks. These limits exclude at 95% confidence level models of Z' bosons with masses from 1.8 to 2.4 TeV and of excited b quarks with masses from 1.8 to 4.0 TeV. This is the most stringent exclusion of excited b quarks to date. |
| Databáze: | OpenAIRE |
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