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Composite scalars at the LHC: the Higgs, the Sextet and the Octet

Authors
Cacciapaglia, GiacomoCai, HaiyingDeandrea, AldoFlacke, ThomasLee, Seung J.Parolini, Alberto
Issue Date
30-11월-2015
Publisher
SPRINGER
Keywords
Beyond Standard Model; Technicolor and Composite Models; Global Symmetries
Citation
JOURNAL OF HIGH ENERGY PHYSICS, no.11
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF HIGH ENERGY PHYSICS
Number
11
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/132734
DOI
10.1007/JHEP11(2015)201
ISSN
1126-6708
Abstract
We present a phenomenological theory of scalar particles that transform as a sextet and an octet of QCD interactions. These particles may arise as light bound states of a fundamental dynamics giving rise to a composite Higgs boson and partial compositeness for the top. As a concrete example, we discuss an explicit UV completion based on the SU(4)/Sp(4) coset, where QCD colour is carried by additional fundamental fermions charged under the confining gauge group. Top partners, as well as potentially even lighter coloured scalars, arise as bound states of the coloured fermions. We study production and detection at LHC Run I and II of the octet and sextet, setting lower limits on masses and couplings to Standard Model particles using existing 8 TeV analyses. We finally explore prospects for the ongoing 13 TeV Run II: we focus on final states with two same sign leptons, that have the potential to discriminate the sextet.
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