Finding the strong CP problem at the LHC

We show that a class of parity based solutions to the strong CP problem predicts new colored particles with mass at the TeV scale, due to constraints from Planck suppressed operators. The new particles are copies of the Standard Model quarks and leptons. The new quarks can be produced at the LHC and...

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Main Authors: Raffaele Tito D'Agnolo, Anson Hook
Format: Article
Language:English
Published: Elsevier 2016-11-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269316305664
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author Raffaele Tito D'Agnolo
Anson Hook
author_facet Raffaele Tito D'Agnolo
Anson Hook
author_sort Raffaele Tito D'Agnolo
collection DOAJ
description We show that a class of parity based solutions to the strong CP problem predicts new colored particles with mass at the TeV scale, due to constraints from Planck suppressed operators. The new particles are copies of the Standard Model quarks and leptons. The new quarks can be produced at the LHC and are either collider stable or decay into Standard Model quarks through a Higgs, a W or a Z boson. We discuss some simple but generic predictions of the models for the LHC and find signatures not related to the traditional solutions of the hierarchy problem. We thus provide alternative motivation for new physics searches at the weak scale. We also briefly discuss the cosmological history of these models and how to obtain successful baryogenesis.
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spelling doaj.art-5a661447408047398209c9549c287d542022-12-21T20:00:20ZengElsevierPhysics Letters B0370-26932016-11-01762421425Finding the strong CP problem at the LHCRaffaele Tito D'Agnolo0Anson Hook1Corresponding author.; School of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540, USASchool of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540, USAWe show that a class of parity based solutions to the strong CP problem predicts new colored particles with mass at the TeV scale, due to constraints from Planck suppressed operators. The new particles are copies of the Standard Model quarks and leptons. The new quarks can be produced at the LHC and are either collider stable or decay into Standard Model quarks through a Higgs, a W or a Z boson. We discuss some simple but generic predictions of the models for the LHC and find signatures not related to the traditional solutions of the hierarchy problem. We thus provide alternative motivation for new physics searches at the weak scale. We also briefly discuss the cosmological history of these models and how to obtain successful baryogenesis.http://www.sciencedirect.com/science/article/pii/S0370269316305664
spellingShingle Raffaele Tito D'Agnolo
Anson Hook
Finding the strong CP problem at the LHC
Physics Letters B
title Finding the strong CP problem at the LHC
title_full Finding the strong CP problem at the LHC
title_fullStr Finding the strong CP problem at the LHC
title_full_unstemmed Finding the strong CP problem at the LHC
title_short Finding the strong CP problem at the LHC
title_sort finding the strong cp problem at the lhc
url http://www.sciencedirect.com/science/article/pii/S0370269316305664
work_keys_str_mv AT raffaeletitodagnolo findingthestrongcpproblematthelhc
AT ansonhook findingthestrongcpproblematthelhc