Monojet signatures from gluino and squark decays
Abstract We study the monojet and dijet channels at the LHC as a tool for searching for squarks and gluinos. We consider two separate R-parity conserving supersymmetric scenarios. In the first scenario we postulate a large mass hierarchy between squarks ( q ~ $$ \overset{\sim }{q} $$ ) and winos ( W...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-10-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP10(2022)150 |
| _version_ | 1811336193121452032 |
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| author | Iñaki Lara Trygve Buanes Rafał Masełek Mihoko M. Nojiri Krzysztof Rolbiecki Kazuki Sakurai |
| author_facet | Iñaki Lara Trygve Buanes Rafał Masełek Mihoko M. Nojiri Krzysztof Rolbiecki Kazuki Sakurai |
| author_sort | Iñaki Lara |
| collection | DOAJ |
| description | Abstract We study the monojet and dijet channels at the LHC as a tool for searching for squarks and gluinos. We consider two separate R-parity conserving supersymmetric scenarios. In the first scenario we postulate a large mass hierarchy between squarks ( q ~ $$ \overset{\sim }{q} $$ ) and winos ( W ~ $$ \overset{\sim }{W} $$ ), and wino-like neutralino is assumed to be the lightest supersymmetric particle (LSP). The associated squark-wino production, pp → q ~ W ~ $$ \overset{\sim }{q}\overset{\sim }{W} $$ , then leads to a monojet-like signature, where the high p T jet is originated from the squark decay, q ~ $$ \overset{\sim }{q} $$ → q + W ~ $$ \overset{\sim }{W} $$ . We demonstrate that this associated production, as well as the pp → W ~ W ~ $$ \overset{\sim }{W}\overset{\sim }{W} $$ + jets production, have a significant impact on the exclusion limit in the squark-neutralino mass plane. The second scenario postulates that the lighter of the squark and gluino is only a few GeV heavier than the LSP neutralino. The associated squark-gluino production, pp → q ~ g ~ $$ \overset{\sim }{q}\overset{\sim }{g} $$ , then leads to a distinctive monojet signature, where the high p T jet is produced from the decay of the heavier coloured particle into the lighter one ( q ~ $$ \overset{\sim }{q} $$ → q+ g ~ $$ \overset{\sim }{g} $$ for m q ~ $$ {m}_{\tilde{q}} $$ > m g ~ $$ {m}_{\tilde{g}} $$ and g ~ $$ \overset{\sim }{g} $$ → q+ q ~ $$ \overset{\sim }{q} $$ for m g ~ $$ {m}_{\tilde{g}} $$ > m q ~ $$ {m}_{\tilde{q}} $$ ). The lighter coloured particle is effectively regarded as an invisible particle since the decay products are soft due to the approximate mass degeneracy. We recast existing monojet and dijet analyses and find a non-trivial exclusion limit in the squark-gluino mass plane in this scenario. |
| first_indexed | 2024-04-13T17:35:54Z |
| format | Article |
| id | doaj.art-2fa3575e47e24aba8ba202e50a89a950 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-13T17:35:54Z |
| publishDate | 2022-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-2fa3575e47e24aba8ba202e50a89a9502022-12-22T02:37:22ZengSpringerOpenJournal of High Energy Physics1029-84792022-10-0120221012210.1007/JHEP10(2022)150Monojet signatures from gluino and squark decaysIñaki Lara0Trygve Buanes1Rafał Masełek2Mihoko M. Nojiri3Krzysztof Rolbiecki4Kazuki Sakurai5Institute of Theoretical Physics, Faculty of Physics, University of WarsawWestern Norway University of Applied SciencesInstitute of Theoretical Physics, Faculty of Physics, University of WarsawTheory Center, IPNS, KEKInstitute of Theoretical Physics, Faculty of Physics, University of WarsawInstitute of Theoretical Physics, Faculty of Physics, University of WarsawAbstract We study the monojet and dijet channels at the LHC as a tool for searching for squarks and gluinos. We consider two separate R-parity conserving supersymmetric scenarios. In the first scenario we postulate a large mass hierarchy between squarks ( q ~ $$ \overset{\sim }{q} $$ ) and winos ( W ~ $$ \overset{\sim }{W} $$ ), and wino-like neutralino is assumed to be the lightest supersymmetric particle (LSP). The associated squark-wino production, pp → q ~ W ~ $$ \overset{\sim }{q}\overset{\sim }{W} $$ , then leads to a monojet-like signature, where the high p T jet is originated from the squark decay, q ~ $$ \overset{\sim }{q} $$ → q + W ~ $$ \overset{\sim }{W} $$ . We demonstrate that this associated production, as well as the pp → W ~ W ~ $$ \overset{\sim }{W}\overset{\sim }{W} $$ + jets production, have a significant impact on the exclusion limit in the squark-neutralino mass plane. The second scenario postulates that the lighter of the squark and gluino is only a few GeV heavier than the LSP neutralino. The associated squark-gluino production, pp → q ~ g ~ $$ \overset{\sim }{q}\overset{\sim }{g} $$ , then leads to a distinctive monojet signature, where the high p T jet is produced from the decay of the heavier coloured particle into the lighter one ( q ~ $$ \overset{\sim }{q} $$ → q+ g ~ $$ \overset{\sim }{g} $$ for m q ~ $$ {m}_{\tilde{q}} $$ > m g ~ $$ {m}_{\tilde{g}} $$ and g ~ $$ \overset{\sim }{g} $$ → q+ q ~ $$ \overset{\sim }{q} $$ for m g ~ $$ {m}_{\tilde{g}} $$ > m q ~ $$ {m}_{\tilde{q}} $$ ). The lighter coloured particle is effectively regarded as an invisible particle since the decay products are soft due to the approximate mass degeneracy. We recast existing monojet and dijet analyses and find a non-trivial exclusion limit in the squark-gluino mass plane in this scenario.https://doi.org/10.1007/JHEP10(2022)150Dark Matter at CollidersSupersymmetryJets and Jet Substructure |
| spellingShingle | Iñaki Lara Trygve Buanes Rafał Masełek Mihoko M. Nojiri Krzysztof Rolbiecki Kazuki Sakurai Monojet signatures from gluino and squark decays Journal of High Energy Physics Dark Matter at Colliders Supersymmetry Jets and Jet Substructure |
| title | Monojet signatures from gluino and squark decays |
| title_full | Monojet signatures from gluino and squark decays |
| title_fullStr | Monojet signatures from gluino and squark decays |
| title_full_unstemmed | Monojet signatures from gluino and squark decays |
| title_short | Monojet signatures from gluino and squark decays |
| title_sort | monojet signatures from gluino and squark decays |
| topic | Dark Matter at Colliders Supersymmetry Jets and Jet Substructure |
| url | https://doi.org/10.1007/JHEP10(2022)150 |
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