Search for exotic decays of a Higgs boson into undetectable particles and one or more photons
© 2015 CERN for the benefit of the CMS Collaboration A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 fb−1 collected...
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/133853 |
| _version_ | 1826202333708550144 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © 2015 CERN for the benefit of the CMS Collaboration A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 fb−1 collected with the CMS detector at the LHC. Higgs bosons produced in gluon–gluon fusion and in association with a Z boson are investigated, using models in which the Higgs boson decays into a gravitino and a neutralino or a pair of neutralinos, followed by the decay of the neutralino to a gravitino and a photon. The selected events are consistent with the background-only hypothesis, and limits are placed on the product of cross sections and branching fractions. Assuming a standard model Higgs boson production cross section, a 95% confidence level upper limit is set on the branching fraction of a 125 GeV Higgs boson decaying into undetectable particles and one or two isolated photons as a function of the neutralino mass. For this class of models and neutralino masses from 1 to 120 GeV an upper limit in the range of 7 to 13% is obtained. Further results are given as a function of the neutralino lifetime, and also for a range of Higgs boson masses. |
| first_indexed | 2024-09-23T12:05:48Z |
| format | Article |
| id | mit-1721.1/133853 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:05:48Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1338532023-01-06T17:51:09Z Search for exotic decays of a Higgs boson into undetectable particles and one or more photons The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 2015 CERN for the benefit of the CMS Collaboration A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 fb−1 collected with the CMS detector at the LHC. Higgs bosons produced in gluon–gluon fusion and in association with a Z boson are investigated, using models in which the Higgs boson decays into a gravitino and a neutralino or a pair of neutralinos, followed by the decay of the neutralino to a gravitino and a photon. The selected events are consistent with the background-only hypothesis, and limits are placed on the product of cross sections and branching fractions. Assuming a standard model Higgs boson production cross section, a 95% confidence level upper limit is set on the branching fraction of a 125 GeV Higgs boson decaying into undetectable particles and one or two isolated photons as a function of the neutralino mass. For this class of models and neutralino masses from 1 to 120 GeV an upper limit in the range of 7 to 13% is obtained. Further results are given as a function of the neutralino lifetime, and also for a range of Higgs boson masses. 2021-10-27T19:57:01Z 2021-10-27T19:57:01Z 2016 2019-05-14T12:49:30Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133853 Khachatryan, V., et al. "Search for Exotic Decays of a Higgs Boson into Undetectable Particles and One or More Photons." Physics Letters B 753 (2016): 363-88. en 10.1016/J.PHYSLETB.2015.12.017 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | The CMS Collaboration Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title_full | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title_fullStr | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title_full_unstemmed | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title_short | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons |
| title_sort | search for exotic decays of a higgs boson into undetectable particles and one or more photons |
| url | https://hdl.handle.net/1721.1/133853 |
| work_keys_str_mv | AT thecmscollaboration searchforexoticdecaysofahiggsbosonintoundetectableparticlesandoneormorephotons |