Flavon signatures at the HL-LHC

Arroyo-Urena, M. A.Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla 72570, Mexico.;Benemerita Univ Autonoma Puebla, Ctr Interdisciplinario Invest & Ensenanza Ciencia, Puebla 72570, Mexico. (author)

The detection of a single Higgs boson at the Large Hadron Collider (LHC) has allowed one to probe some properties of it, including the Yukawa and gauge couplings. However, in order to probe the Higgs potential, one has to rely on new production mechanisms, such as Higgs pair production. In this paper, we show that such a channel is also sensitive to the production and decay of a so-called 'flavon' field (HF), a new scalar state that arises in models that attempt to explain the hierarchy of the Standard Model (SM) fermion masses. Our analysis also focuses on the other decay channels involving the flavon particle, specifically the decay of the flavon to a pair of Z bosons (HF -> ZZ) and the concurrent production of a top quark and charm quark via the 0 -> tc decays (0 = HF; AF), having one or more leptons in the final states. In particular, we show that, with 3000 fb-1 of accumulated data at 14 TeV (the Run 3 stage) of the LHC an heavy flavon HF with mass MHF similar or equal to 2mt can be explored with 3a-5a significance through these channels.

Chakraborty, AmitSRM Univ AP, Sch Engn & Sci, Dept Phys, Mangalagiri 522240, India. (author)
Diaz-Cruz, J. LorenzoBenemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla 72570, Mexico.;Benemerita Univ Autonoma Puebla, Ctr Interdisciplinario Invest & Ensenanza Ciencia, Puebla 72570, Mexico. (author)
Ghosh, Dilip KumarIndian Assoc Cultivat Sci, Sch Phys Sci, 2A & 2B Raja SC Mullick Rd, Kolkata 700032, India. (author)
Khan, NajimuddinHarish Chandra Res Inst, CI Homi Bhabha Natl Inst, Chhatnag Rd, Prayagraj 211019, India. (author)
Moretti, StefanoUppsala universitet,Högenergifysik,Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, England.(Swepub:uu)stemo643 (author)
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla 72570, Mexico.;Benemerita Univ Autonoma Puebla, Ctr Interdisciplinario Invest & Ensenanza Ciencia, Puebla 72570, Mexico.SRM Univ AP, Sch Engn & Sci, Dept Phys, Mangalagiri 522240, India. (creator_code:org_t)

By the author/editor: Arroyo-Urena, M. ...; Chakraborty, Ami ...; Diaz-Cruz, J. Lo ...; Ghosh, Dilip Kum ...; Khan, Najimuddin; Moretti, Stefano

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NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

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