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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/260344
Title: A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector
Authors: Hrynevich, A.
ATLAS Collaboration
Keywords: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика
Issue Date: 2018
Publisher: Elsevier B.V.
Citation: Phys Lett Sect B Nucl Elem Part High-Energy Phys 2018;779:24-45.
Abstract: 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.
URI: https://elib.bsu.by/handle/123456789/260344
DOI: 10.1016/j.physletb.2018.01.042
Scopus: 85046461175
Sponsorship: National Science Foundation (NSF) 1404209,1624739,1707971$ Science and Technology Facilities Council (STFC) 1653101,PP/E000452/1,ST/H001158/1,ST/H001158/2,ST/J004804/1,ST/J005533/1,ST/K001329/1,ST/N000234/1,ST/N000277/1,ST/N000307/1,ST/N000331/1
Appears in Collections:Статьи НИУ «Институт ядерных проблем»

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