PreprintCC BY 4.0HAL
Search for a resonance in events with four top quarks decaying into two leptons and jets in proton-proton collisions
Abstract
A search for a heavy resonance in events containing four top quarks is presented and interpreted in models featuring a new vector, scalar, or pseudoscalar boson that interacts exclusively with top quarks. Proton-proton collision data collected by the CMS experiment at the CERN LHC at centre-of-mass energies of 13 and 13.6 TeV are analysed, corresponding to integrated luminosities of 138 and 35 fb−1, respectively. Events with two leptons (electrons or muons) and jets are selected. The mass of the heavy resonance is reconstructed from a pair of jets that are formed using a variable-radius jet clustering algorithm. A machine-learning approach is used to identify whether these jets originate from top quarks that decay fully hadronically. The dominant background from misidentified jets is estimated from data as a function of the dijet invariant mass. No significant excess is observed in data. Upper limits at 95% confidence level are set on the resonance production cross section for resonance masses between 500 GeV and 4 TeV, and relative widths ranging from 4 to 50%. In the vector-mediator benchmark, resonances with 50% relative width are excluded up to masses of 850 GeV, with an expected exclusion limit of 1000 GeV. This is the first dedicated search for these models in the two lepton channel.
Related
- Search for a new heavy scalar resonance decaying to a pair of Z bosons in the four-lepton final state in proton-proton collisions at √s = 13 TeV
- Search for a leptoquark in events with a hadronically decaying τ-lepton and missing transverse momentum using pp collisions at s=13TeV with the ATLAS detector
- Search for a new heavy scalar resonance decaying to a pair of Z bosons in the four-lepton final state in proton-proton collisions at √s=13 TeV
- Search for low-mass resonances decaying to ττ in proton-proton collisions at √s = 13.6 TeV
- Search for supersymmetric particle pair production in final states with two oppositely charged leptons and large missing transverse momentum in proton-proton collisions at √s = 13 TeV
BibTeX
@misc{gevorgyan2026search,
title = {{Search for a resonance in events with four top quarks decaying into two leptons and jets in proton-proton collisions}},
author = {Arzunik Gevorgyan and Aram Hayrapetyan and Vladimir Makarenko and Armen Tumasyan and Wolfgang Adam and Lisa Benato and Thomas Bergauer and Marko Dragicevic and Stefan Gundacker and Ali Kaan Guven and Priya Sajid Hussain and Manfred Jeitler and Natascha Krammer and Ang Li and Dietrich Liko and Mark Nicholas Matthewman and Jochen Schieck and Robert Schoefbeck and Maryam Shooshtari and Mangesh Sonawane and Niels van den Bossche and Wolfgang Waltenberger and Claudia Wulz and Tahys Janssen and Daniel Ocampo Henao and Thomas van Laer and Pierre van Mechelen and Donya Ahmadi and Jas Bierkens and Nordin Breugelmans and Soumya Dansana and Alexandre de Moor and Martin Delcourt and Stef Duponcheel and Chirayu Gupta and Felix Johannes Heyen and Yanwen Hong and Kai Kang and Pavlo Kashko and Steven Lowette and Inna Makarenko and Saranya Nandakumar and Jeremi Niedziela and Stefaan Tavernier and Michael Tytgat and Gerrit van Onsem and Senne van Putte and Tiepolo Wybouw and Aya Beshr and Bugra Bilin and Franco Caviglia Roman and Barbara Clerbaux and Aloke Kumar Das and Isabelle de Bruyn and Gilles de Lentdecker and Eliott Ducarme and Hugues Evard and Laurent Favart and Ilia Kalaitzidou and Ali Khalilzadeh},
howpublished = {HAL},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2608.10148},
eprint = {2608.10148},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05734665v1},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Search for a resonance in events with four top quarks decaying into two leptons and jets in proton-proton collisions
AU - Arzunik Gevorgyan
AU - Aram Hayrapetyan
AU - Vladimir Makarenko
AU - Armen Tumasyan
AU - Wolfgang Adam
AU - Lisa Benato
AU - Thomas Bergauer
AU - Marko Dragicevic
AU - Stefan Gundacker
AU - Ali Kaan Guven
AU - Priya Sajid Hussain
AU - Manfred Jeitler
AU - Natascha Krammer
AU - Ang Li
AU - Dietrich Liko
AU - Mark Nicholas Matthewman
AU - Jochen Schieck
AU - Robert Schoefbeck
AU - Maryam Shooshtari
AU - Mangesh Sonawane
AU - Niels van den Bossche
AU - Wolfgang Waltenberger
AU - Claudia Wulz
AU - Tahys Janssen
AU - Daniel Ocampo Henao
AU - Thomas van Laer
AU - Pierre van Mechelen
AU - Donya Ahmadi
AU - Jas Bierkens
AU - Nordin Breugelmans
AU - Soumya Dansana
AU - Alexandre de Moor
AU - Martin Delcourt
AU - Stef Duponcheel
AU - Chirayu Gupta
AU - Felix Johannes Heyen
AU - Yanwen Hong
AU - Kai Kang
AU - Pavlo Kashko
AU - Steven Lowette
AU - Inna Makarenko
AU - Saranya Nandakumar
AU - Jeremi Niedziela
AU - Stefaan Tavernier
AU - Michael Tytgat
AU - Gerrit van Onsem
AU - Senne van Putte
AU - Tiepolo Wybouw
AU - Aya Beshr
AU - Bugra Bilin
AU - Franco Caviglia Roman
AU - Barbara Clerbaux
AU - Aloke Kumar Das
AU - Isabelle de Bruyn
AU - Gilles de Lentdecker
AU - Eliott Ducarme
AU - Hugues Evard
AU - Laurent Favart
AU - Ilia Kalaitzidou
AU - Ali Khalilzadeh
PY - 2026
DA - 2026/09/01
PB - HAL
DO - 10.48550/arxiv.2608.10148
UR - https://hal.science/hal-05734665v1
AB - A search for a heavy resonance in events containing four top quarks is presented and interpreted in models featuring a new vector, scalar, or pseudoscalar boson that interacts exclusively with top quarks. Proton-proton collision data collected by the CMS experiment at the CERN LHC at centre-of-mass energies of 13 and 13.6 TeV are analysed, corresponding to integrated luminosities of 138 and 35 fb^−1, respectively. Events with two leptons (electrons or muons) and jets are selected. The mass of the heavy resonance is reconstructed from a pair of jets that are formed using a variable-radius jet clustering algorithm. A machine-learning approach is used to identify whether these jets originate from top quarks that decay fully hadronically. The dominant background from misidentified jets is estimated from data as a function of the dijet invariant mass. No significant excess is observed in data. Upper limits at 95% confidence level are set on the resonance production cross section for resonance masses between 500 GeV and 4 TeV, and relative widths ranging from 4 to 50%. In the vector-mediator benchmark, resonances with 50% relative width are excluded up to masses of 850 GeV, with an expected exclusion limit of 1000 GeV. This is the first dedicated search for these models in the two lepton channel.
ER -