Search for the nonresonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the b¯bτ+ τ final state in proton-proton collisions at √𝑠 =13  TeV with the ATLAS detector

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • University of Adelaide
  • Université Paris-Saclay
  • University of Alberta
  • TRIUMF
  • Ankara University
  • TOBB University of Economics and Technology
  • Laboratoire d'Annecy-le-Vieux de Physique des Particules LAPP

Abstract

A search for the nonresonant production of Higgs boson pairs in the Formula Presented channel is performed using Formula Presented of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimized to probe anomalous values of the Higgs boson self-coupling modifier Formula Presented and of the quartic Formula Presented (Formula Presented) coupling modifier Formula Presented. No significant excess above the expected background from Standard Model processes is observed. An observed (expected) upper limit Formula Presented is set at 95% confidence-level on the Higgs boson pair production cross section normalized to its Standard Model prediction. The coupling modifiers are constrained to an observed (expected) 95% confidence interval of Formula Presented (Formula Presented) and Formula Presented (Formula Presented), assuming all other Higgs boson couplings are fixed to the Standard Model prediction. The results are also interpreted in the context of effective field theories via constraints on anomalous Higgs boson couplings and Higgs boson pair production cross sections assuming different kinematic benchmark scenarios.

Details

OriginalspracheEnglisch
Aufsatznummer032012
Seitenumfang35
FachzeitschriftPhysical review d
Jahrgang110
Ausgabenummer3
PublikationsstatusVeröffentlicht - 9 Aug. 2024
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0003-0546-1634/work/173516675

Schlagworte

ASJC Scopus Sachgebiete