The NMSSM is within reach of the LHC: mass correlations & decay signatures
Abstract The Next-to-Minimal Supersymmetric Standard Model (NMSSM), the singlet extension of the MSSM which fixes many of the MSSM’s shortcomings, is shown to be within reach of the upcoming runs of the Large Hadron Collider (LHC). A systematic treatment of the various Higgs decay channels and their...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-04-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP04(2019)011 |
| _version_ | 1819059756509167616 |
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| author | Sebastian Baum Nausheen R. Shah Katherine Freese |
| author_facet | Sebastian Baum Nausheen R. Shah Katherine Freese |
| author_sort | Sebastian Baum |
| collection | DOAJ |
| description | Abstract The Next-to-Minimal Supersymmetric Standard Model (NMSSM), the singlet extension of the MSSM which fixes many of the MSSM’s shortcomings, is shown to be within reach of the upcoming runs of the Large Hadron Collider (LHC). A systematic treatment of the various Higgs decay channels and their interplay has been lacking due to the seemingly large number of free parameters in the NMSSM’s Higgs sector. We demonstrate that due to the SM-like nature of the observed Higgs boson, the NMSSM’s Higgs and neutralino sectors have highly correlated masses and couplings and can effectively be described by four physically intuitive parameters: the physical masses of the two CP-odd states and their mixing angle, and tan β, which plays a minor role. The heavy Higgs bosons in the NMSSM have large branching ratios into pairs of lighter Higgs bosons or a light Higgs and a Z boson. Search channels arising via these Higgs cascades are unique to models like the NMSSM with a Higgs sector larger than that of the MSSM. In order to cover as much of the NMSSM parameter space as possible, one must combine conventional search strategies employing decays of the additional Higgs bosons into pairs of SM particles with Higgs cascade channels. We demonstrate that such a combination would allow a significant fraction of the viable NMSSM parameter space containing additional Higgs bosons with masses below 1 TeV to be probed at future runs of the LHC. |
| first_indexed | 2024-12-21T14:16:09Z |
| format | Article |
| id | doaj.art-dc4bb1dc83b04efba87399010e6396b6 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-21T14:16:09Z |
| publishDate | 2019-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-dc4bb1dc83b04efba87399010e6396b62022-12-21T19:00:55ZengSpringerOpenJournal of High Energy Physics1029-84792019-04-012019415110.1007/JHEP04(2019)011The NMSSM is within reach of the LHC: mass correlations & decay signaturesSebastian Baum0Nausheen R. Shah1Katherine Freese2The Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm UniversityDepartment of Physics & Astronomy, Wayne State UniversityThe Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm UniversityAbstract The Next-to-Minimal Supersymmetric Standard Model (NMSSM), the singlet extension of the MSSM which fixes many of the MSSM’s shortcomings, is shown to be within reach of the upcoming runs of the Large Hadron Collider (LHC). A systematic treatment of the various Higgs decay channels and their interplay has been lacking due to the seemingly large number of free parameters in the NMSSM’s Higgs sector. We demonstrate that due to the SM-like nature of the observed Higgs boson, the NMSSM’s Higgs and neutralino sectors have highly correlated masses and couplings and can effectively be described by four physically intuitive parameters: the physical masses of the two CP-odd states and their mixing angle, and tan β, which plays a minor role. The heavy Higgs bosons in the NMSSM have large branching ratios into pairs of lighter Higgs bosons or a light Higgs and a Z boson. Search channels arising via these Higgs cascades are unique to models like the NMSSM with a Higgs sector larger than that of the MSSM. In order to cover as much of the NMSSM parameter space as possible, one must combine conventional search strategies employing decays of the additional Higgs bosons into pairs of SM particles with Higgs cascade channels. We demonstrate that such a combination would allow a significant fraction of the viable NMSSM parameter space containing additional Higgs bosons with masses below 1 TeV to be probed at future runs of the LHC.http://link.springer.com/article/10.1007/JHEP04(2019)011Supersymmetry Phenomenology |
| spellingShingle | Sebastian Baum Nausheen R. Shah Katherine Freese The NMSSM is within reach of the LHC: mass correlations & decay signatures Journal of High Energy Physics Supersymmetry Phenomenology |
| title | The NMSSM is within reach of the LHC: mass correlations & decay signatures |
| title_full | The NMSSM is within reach of the LHC: mass correlations & decay signatures |
| title_fullStr | The NMSSM is within reach of the LHC: mass correlations & decay signatures |
| title_full_unstemmed | The NMSSM is within reach of the LHC: mass correlations & decay signatures |
| title_short | The NMSSM is within reach of the LHC: mass correlations & decay signatures |
| title_sort | nmssm is within reach of the lhc mass correlations decay signatures |
| topic | Supersymmetry Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP04(2019)011 |
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