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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...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2014
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.89.055007 http://cds.cern.ch/record/1641100 |
_version_ | 1780934856854732800 |
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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 |
record_format | invenio |
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 |
work_keys_str_mv | AT baerhoward monojetsandmonophotonsfromlighthiggsinopairproductionatlhc14 AT mustafayevazar monojetsandmonophotonsfromlighthiggsinopairproductionatlhc14 AT tataxerxes monojetsandmonophotonsfromlighthiggsinopairproductionatlhc14 |