A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector

The ATLAS Collaboration

研究成果: Article査読

14 被引用数 (Scopus)

抄録

A search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb−1 of proton–proton collision data at s=13TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle X is assumed to decay to a pair of light quarks, and the fully hadronic final state XH→qq¯bb¯ is analysed. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH→qq¯bb¯ resonance.

本文言語English
ページ(範囲)24-45
ページ数22
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
779
DOI
出版ステータスPublished - 2018 4 10

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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