Di-boson signatures as standard candles for partial compositeness
Artikel i vetenskaplig tidskrift, 2017

Composite Higgs Models are often constructed including fermionic top partners with a mass around the TeV scale, with the top partners playing the role of stabilizing the Higgs potential and enforcing partial compositeness for the top quark. A class of models of this kind can be formulated in terms of fermionic strongly coupled gauge theories. A common feature they all share is the presence of specific additional scalar resonances, namely two neutral singlets and a colored octet, described by a simple effective Lagrangian. We study the phenomenology of these scalars, both in a model independent and model dependent way, including the bounds from all the available searches in the relevant channels with di-boson and di-top final states. We develop a generic framework which can be used to constrain any model containing pseudo-scalar singlets or octets. Using it, we find that such signatures provide strong bounds on the compositeness scale complementary to the traditional EWPT and Higgs couplings deviations. In many cases a relatively light scalar can be on the verge of discovery as a first sign of new physics.

Sigma Models

Global Symmetries

Technicolor and Composite Models

Beyond Standard Model

Författare

Alexander Belyaev

Rutherford Appleton Laboratory

University of Southampton

Giacomo Cacciapaglia

Institut de Physique Nucleaire de Lyon

Haiying Cai

Institut de Physique Nucleaire de Lyon

Gabriele Ferretti

Chalmers, Fysik, Subatomär fysik och plasmafysik

Thomas Flacke

Institute for Basic Science

Korea University

Alberto Parolini

Korea University

Hugo Serodio

Lunds universitet

Korea University

Journal of High Energy Physics

1126-6708 (ISSN) 1029-8479 (eISSN)

Vol. 2017 1 94

Ämneskategorier

Subatomär fysik

DOI

10.1007/JHEP01(2017)094