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Monojets and mono-photons from light higgsino pair production at LHC14

Naturalness arguments imply the existence of higgsinos lighter than 200-300 GeV. However, because these higgsinos are nearly mass degenerate, they release very little visible energy in their decays, and signals from electroweak higgsino pair production typically remain buried under Standard Model ba...

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Detalles Bibliográficos
Autores principales: Baer, Howard, Mustafayev, Azar, Tata, Xerxes
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.89.055007
http://cds.cern.ch/record/1641100
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author Baer, Howard
Mustafayev, Azar
Tata, Xerxes
author_facet Baer, Howard
Mustafayev, Azar
Tata, Xerxes
author_sort Baer, Howard
collection CERN
description Naturalness arguments imply the existence of higgsinos lighter than 200-300 GeV. However, because these higgsinos are nearly mass degenerate, they release very little visible energy in their decays, and signals from electroweak higgsino pair production typically remain buried under Standard Model backgrounds. Moreover, gluinos, squarks and winos may plausibly lie beyond the reach of the LHC14, so that signals from naturalness-inspired supersymmetric models may well remain hidden via conventional searches. We examine instead prospects for detecting higgsino pair production via monojets or mono-photons from initial state radiation. We find typical signal-to-background rates at best at the 1 % level, leading to rather pessimistic conclusions regarding detectability via these channels.
id cern-1641100
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-16411002023-03-14T17:42:55Zdoi:10.1103/PhysRevD.89.055007http://cds.cern.ch/record/1641100engBaer, HowardMustafayev, AzarTata, XerxesMonojets and mono-photons from light higgsino pair production at LHC14Particle Physics - PhenomenologyNaturalness arguments imply the existence of higgsinos lighter than 200-300 GeV. However, because these higgsinos are nearly mass degenerate, they release very little visible energy in their decays, and signals from electroweak higgsino pair production typically remain buried under Standard Model backgrounds. Moreover, gluinos, squarks and winos may plausibly lie beyond the reach of the LHC14, so that signals from naturalness-inspired supersymmetric models may well remain hidden via conventional searches. We examine instead prospects for detecting higgsino pair production via monojets or mono-photons from initial state radiation. We find typical signal-to-background rates at best at the 1 % level, leading to rather pessimistic conclusions regarding detectability via these channels.Naturalness arguments imply the existence of Higgsinos lighter than 200–300 GeV. However, because these Higgsinos are nearly mass degenerate, they release very little visible energy in their decays, and signals from electroweak Higgsino pair production typically remain buried under Standard Model backgrounds. Moreover, gluinos, squarks and winos may plausibly lie beyond the reach of the LHC14, so that signals from naturalness-inspired supersymmetric models may well remain hidden via conventional searches. We examine instead prospects for detecting Higgsino pair production via monojets or monophotons from initial-state radiation. We find typical signal-to-background rates at best at the 1% level and without any spectral distortions, leading to rather pessimistic conclusions regarding detectability via these channels.Naturalness arguments imply the existence of higgsinos lighter than 200-300 GeV. However, because these higgsinos are nearly mass degenerate, they release very little visible energy in their decays, and signals from electroweak higgsino pair production typically remain buried under Standard Model backgrounds. Moreover, gluinos, squarks and winos may plausibly lie beyond the reach of the LHC14, so that signals from naturalness-inspired supersymmetric models may well remain hidden via conventional searches. We examine instead prospects for detecting higgsino pair production via monojets or mono-photons from initial state radiation. We find typical signal-to-background rates at best at the 1 % level, leading to rather pessimistic conclusions regarding detectability via these channels.arXiv:1401.1162CERN-PH-TH-2013-317CERN-PH-TH-2013-317oai:cds.cern.ch:16411002014-01-06
spellingShingle Particle Physics - Phenomenology
Baer, Howard
Mustafayev, Azar
Tata, Xerxes
Monojets and mono-photons from light higgsino pair production at LHC14
title Monojets and mono-photons from light higgsino pair production at LHC14
title_full Monojets and mono-photons from light higgsino pair production at LHC14
title_fullStr Monojets and mono-photons from light higgsino pair production at LHC14
title_full_unstemmed Monojets and mono-photons from light higgsino pair production at LHC14
title_short Monojets and mono-photons from light higgsino pair production at LHC14
title_sort monojets and mono-photons from light higgsino pair production at lhc14
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.89.055007
http://cds.cern.ch/record/1641100
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AT mustafayevazar monojetsandmonophotonsfromlighthiggsinopairproductionatlhc14
AT tataxerxes monojetsandmonophotonsfromlighthiggsinopairproductionatlhc14