Probing naturally light singlets with a displaced vertex trigger

Probing naturally light singlets with a displaced vertex trigger

We investigate the physics case for a dedicated trigger on a low mass, hadronic displaced vertex at the high luminosity LHC, relying on the CMS phase II track trigger. We estimate the trigger efficiency with a simplified simulation of the CMS track trigger and show that the L1 trigger rate from fake...

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Autores principales: Yuri Gershtein, Simon Knapen, Diego Redigolo
Formato: article
Lenguaje:EN
Publicado: Elsevier 2021
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Physics
QC1-999
Acceso en línea:https://doaj.org/article/5631990d14ab45bc9450aa94123b6d48
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spelling oai:doaj.org-article:5631990d14ab45bc9450aa94123b6d482021-12-04T04:32:37ZProbing naturally light singlets with a displaced vertex trigger0370-269310.1016/j.physletb.2021.136758https://doaj.org/article/5631990d14ab45bc9450aa94123b6d482021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321006985https://doaj.org/toc/0370-2693We investigate the physics case for a dedicated trigger on a low mass, hadronic displaced vertex at the high luminosity LHC, relying on the CMS phase II track trigger. We estimate the trigger efficiency with a simplified simulation of the CMS track trigger and show that the L1 trigger rate from fake vertices, B meson decays and secondary interactions with the detector material can likely be brought down to the kHz level with a minimal set of cuts. While it would with any doubt be a severe experimental challenge to implement, we conclude that a displaced vertex trigger could open qualitatively new parameter space for exotic Higgs decays, exotic B decays and even direct production of light resonances. We parametrize the physics potential in terms of a singlet scalar mixing with the Standard Model Higgs and an axion-like particle with a coupling to gluons, and review a number or relevant models motivated by the hierarchy and strong CP problems, Dark Matter and baryogenesis.Yuri GershteinSimon KnapenDiego RedigoloElsevierarticlePhysicsQC1-999ENPhysics Letters B, Vol 823, Iss , Pp 136758- (2021)
institution DOAJ
collection DOAJ
language EN
topic Physics
QC1-999
spellingShingle Physics
QC1-999
Yuri Gershtein
Simon Knapen
Diego Redigolo
Probing naturally light singlets with a displaced vertex trigger
description We investigate the physics case for a dedicated trigger on a low mass, hadronic displaced vertex at the high luminosity LHC, relying on the CMS phase II track trigger. We estimate the trigger efficiency with a simplified simulation of the CMS track trigger and show that the L1 trigger rate from fake vertices, B meson decays and secondary interactions with the detector material can likely be brought down to the kHz level with a minimal set of cuts. While it would with any doubt be a severe experimental challenge to implement, we conclude that a displaced vertex trigger could open qualitatively new parameter space for exotic Higgs decays, exotic B decays and even direct production of light resonances. We parametrize the physics potential in terms of a singlet scalar mixing with the Standard Model Higgs and an axion-like particle with a coupling to gluons, and review a number or relevant models motivated by the hierarchy and strong CP problems, Dark Matter and baryogenesis.
format article
author Yuri Gershtein
Simon Knapen
Diego Redigolo
author_facet Yuri Gershtein
Simon Knapen
Diego Redigolo
author_sort Yuri Gershtein
title Probing naturally light singlets with a displaced vertex trigger
title_short Probing naturally light singlets with a displaced vertex trigger
title_full Probing naturally light singlets with a displaced vertex trigger
title_fullStr Probing naturally light singlets with a displaced vertex trigger
title_full_unstemmed Probing naturally light singlets with a displaced vertex trigger
title_sort probing naturally light singlets with a displaced vertex trigger
publisher Elsevier
publishDate 2021
url https://doaj.org/article/5631990d14ab45bc9450aa94123b6d48
work_keys_str_mv AT yurigershtein probingnaturallylightsingletswithadisplacedvertextrigger
AT simonknapen probingnaturallylightsingletswithadisplacedvertextrigger
AT diegoredigolo probingnaturallylightsingletswithadisplacedvertextrigger
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