Discussion on the physics of Four Tops

Online only (CERN)

Online only


Fabio Maltoni (Université Catholique de Louvain and Università di Bologna), Ennio Salvioni (CERN), Javi Serra (Technical University of Munich)

With the large amount of data gathered by the Run 2 of the LHC, the production of four top quarks has become a very interesting probe of the Standard Model and beyond. What is more, the measurements of this process in multilepton + (b-)jets final states have found an intriguing enhancement with respect to state-of-the-art SM predictions, usually attributed to its ttW background. In this event we invite you to discuss the physics of four tops, both within and beyond the SM. The meeting will consist of a few invited presentations, each followed by ample time for scientific exchange.

  • Admir Greljo
  • Adrian Rubio Jimenez
  • Afiq Anuar
  • Ana Ventura Barroso
  • Andrea Banfi
  • Andreas Weiler
  • Anil Sonay
  • Ankan Biswas
  • Aurelio Juste Rozas
  • Barry Dillon
  • Benjamin Fuks
  • Bhima Devi Neopaney
  • Cecilia Uribe Estrada
  • Clara Nellist
  • Daniela Katherinne Paredes Hernandez
  • Darius Faroughy
  • David Munoz Perez
  • Davide Pagani
  • Denise Muller
  • Didar Dobur
  • Efe Yazgan
  • Elise Maria Le Boulicaut
  • Emanuele Usai
  • Ennio Salvioni
  • Fabio Iemmi
  • Fabio Maltoni
  • Florian Fischer
  • Francesco Spano
  • Frederic Deliot
  • Freya Blekman
  • Gabriel Gomes Da Silva
  • Gauthier Durieux
  • George Wei-Shu Hou
  • Giuseppe Bevilacqua
  • Hayoung Oh
  • Hesham El Faham
  • Ioannis Tsinikos
  • Jachin Friday
  • Jailson Oliveira Santana
  • Jan Kieseler
  • Javi Serra
  • Jernej F. Kamenik
  • Jiwon Park
  • Joel Goldstein
  • Jose Agustin Lozano Torres
  • Joshuha Thomas-Wilsker
  • Ken Mimasu
  • Luca Pagani
  • Luca Silvestrini
  • Manuel Szewc
  • Marcel Vos
  • Marco Zaro
  • Marcos Miralles Lopez
  • Maria Aldaya Martin
  • Maria Moreno Llacer
  • Mark Kruse
  • Matteo Maltoni
  • Meng-Ju Tsai
  • Michelangelo Mangano
  • Mohammed Faraj
  • Myeonghun Park
  • Nedaa-Alexandra Asbah
  • Nicolas Stylianou
  • Niels Van den Bossche
  • Oğul Öncel
  • Paride Paradisi
  • Percy Cáceres
  • Peter Berta
  • Peter Johannes Falke
  • Pyungwon Ko
  • Rafael Aoude
  • Ratan Sarkar
  • Ricardo Mendez
  • Richard Ruiz
  • Rikkert Frederix
  • Robert Clare
  • Shalini Epari
  • Simon Berlendis
  • Sinan Sagir
  • Stergios Kazakos
  • Susanne Westhoff
  • Tamara Vazquez Schroeder
  • Tobias Theil
  • Umang Kumar
  • Vichayanun Wachirapusitanand
  • Xingguo Li
  • Zhi Zheng
Discussion on the physics of four tops
Zoom Meeting ID
Elena Gianolio
Alternative hosts
Fabio Maltoni, Ennio Salvioni
Useful links
Join via phone
Zoom URL
    • 3:00 PM 3:30 PM
      Experimental status of four-top searches in ATLAS 30m
      Speaker: Simon Berlendis (University of Arizona)
    • 3:30 PM 4:00 PM
      Experimental status of four-top searches in CMS 30m
      Speaker: Emanuele Usai (Brown University)
    • 4:00 PM 4:35 PM
      Standard Model predictions for tttt 35m

      In this presentation the NLO predictions for the production of 4 top quarks will be discussed and what this implies for the extraction of the top Yukawa coupling from this process. Based on https://arxiv.org/abs/1711.02116.

      Speaker: Rikkert Frederix (Lund University)
    • 4:35 PM 5:00 PM
      Coffee break 25m
    • 5:00 PM 5:30 PM
      The present and future of four top operators 30m

      Based on https://arxiv.org/abs/2010.05915.

      Speaker: Tobias Theil (Technical University of Munich)
    • 5:30 PM 6:00 PM
      Topping-up multilepton plus b-jets anomalies at the LHC with a Z′ boson 30m

      Based on https://arxiv.org/abs/2011.06514.

      Speaker: Manuel Szewc (UNSAM)
    • 6:00 PM 6:30 PM
      SMEFT@NLO and indirect constraints on top operators 30m

      Based on https://arxiv.org/abs/2008.11743.

      Speaker: Ken Mimasu (King's College London)
    • 6:30 PM 7:00 PM
      Four-top-quark signatures: from EFT to simplified models 30m

      Four-top-quark production offers a unique window into top-quark self-interactions and generic top-philic new physics. We study the accuracy of an EFT description of several simplified model scenarios for current new physics searches in four-top-quark final states at LHC. We establish along the way new limits based on the most recent experimental results, projections for the future reach of the HL-LHC and emphasise the necessity of a dedicated experimental search strategy for top-philic resonances in four top final states.

      Speaker: Luc Jean Marie Darmé (INFN - National Institute for Nuclear Physics)
    • 7:00 PM 7:15 PM
      Final discussion 15m