Search for the t → ch decay at hadron colliders
Abstract We study the observability for the flavor-changing decay of a top quark t → ch at the Large Hadron Collider (LHC) and future hadron colliders, namely, High-Luminosity LHC (HL-LHC), High-Energy LHC (HE-LHC) and Future Circular hadron-hadron Collider (FCC-hh). Two scenarios in which the Higgs...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | http://link.springer.com/article/10.1007/JHEP07(2019)041 |
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| author | M. A. Arroyo-Ureña R. Gaitán E. A. Herrera-Chacón J. H. Montes de Oca Y. T. A. Valencia-Pérez |
| author_facet | M. A. Arroyo-Ureña R. Gaitán E. A. Herrera-Chacón J. H. Montes de Oca Y. T. A. Valencia-Pérez |
| author_sort | M. A. Arroyo-Ureña |
| collection | DOAJ |
| description | Abstract We study the observability for the flavor-changing decay of a top quark t → ch at the Large Hadron Collider (LHC) and future hadron colliders, namely, High-Luminosity LHC (HL-LHC), High-Energy LHC (HE-LHC) and Future Circular hadron-hadron Collider (FCC-hh). Two scenarios in which the Higgs boson could decay: into a quark bottom pair (bb-channel) and two photons (γγ-channel) are analyzed. A Monte Carlo analysis of the signal and the Standard Model (SM) background is computed. Center-of-mass energies of s = 14 , 27 $$ \sqrt{s}=14,27 $$ and 100 TeV and integrated luminosities from 0.3 to 30 ab−1 are explored. The theoretical framework adopted in this work is the Type-III Two-Higgs Doublet Model (THDM-III) for which, constraints on the parameter space from the Higgs boson coupling modifiers κ i are presented and used in order to evaluate the branching ratio of the t → ch decay and the pp → t t ¯ , t → c h $$ \left( pp\to t\overline{t},\ t\to ch\right) $$ production cross section. We find that with the integrated luminosity achieved at the LHC, the t → ch decay is out of the reach of detection. More promising results emerge for the HL-LHC, HE-LHC and FCC-hh in which potential discoveries could be claimed. |
| first_indexed | 2024-12-18T06:52:49Z |
| format | Article |
| id | doaj.art-45e8788b116f4a7da03acb460ad5c62f |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-18T06:52:49Z |
| publishDate | 2019-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-45e8788b116f4a7da03acb460ad5c62f2022-12-21T21:17:16ZengSpringerOpenJournal of High Energy Physics1029-84792019-07-012019712010.1007/JHEP07(2019)041Search for the t → ch decay at hadron collidersM. A. Arroyo-Ureña0R. Gaitán1E. A. Herrera-Chacón2J. H. Montes de Oca Y.3T. A. Valencia-Pérez4Departamento de Física, FES-Cuautitlán, Universidad Nacional Autónoma de MéxicoDepartamento de Física, FES-Cuautitlán, Universidad Nacional Autónoma de MéxicoFacultad de Ciencias Físico-Matemáticas, Benemérita Universidad Autónoma de PueblaDepartamento de Física, FES-Cuautitlán, Universidad Nacional Autónoma de MéxicoFacultad de Ciencias Físico-Matemáticas, Benemérita Universidad Autónoma de PueblaAbstract We study the observability for the flavor-changing decay of a top quark t → ch at the Large Hadron Collider (LHC) and future hadron colliders, namely, High-Luminosity LHC (HL-LHC), High-Energy LHC (HE-LHC) and Future Circular hadron-hadron Collider (FCC-hh). Two scenarios in which the Higgs boson could decay: into a quark bottom pair (bb-channel) and two photons (γγ-channel) are analyzed. A Monte Carlo analysis of the signal and the Standard Model (SM) background is computed. Center-of-mass energies of s = 14 , 27 $$ \sqrt{s}=14,27 $$ and 100 TeV and integrated luminosities from 0.3 to 30 ab−1 are explored. The theoretical framework adopted in this work is the Type-III Two-Higgs Doublet Model (THDM-III) for which, constraints on the parameter space from the Higgs boson coupling modifiers κ i are presented and used in order to evaluate the branching ratio of the t → ch decay and the pp → t t ¯ , t → c h $$ \left( pp\to t\overline{t},\ t\to ch\right) $$ production cross section. We find that with the integrated luminosity achieved at the LHC, the t → ch decay is out of the reach of detection. More promising results emerge for the HL-LHC, HE-LHC and FCC-hh in which potential discoveries could be claimed.http://link.springer.com/article/10.1007/JHEP07(2019)041Phenomenological Models |
| spellingShingle | M. A. Arroyo-Ureña R. Gaitán E. A. Herrera-Chacón J. H. Montes de Oca Y. T. A. Valencia-Pérez Search for the t → ch decay at hadron colliders Journal of High Energy Physics Phenomenological Models |
| title | Search for the t → ch decay at hadron colliders |
| title_full | Search for the t → ch decay at hadron colliders |
| title_fullStr | Search for the t → ch decay at hadron colliders |
| title_full_unstemmed | Search for the t → ch decay at hadron colliders |
| title_short | Search for the t → ch decay at hadron colliders |
| title_sort | search for the t ch decay at hadron colliders |
| topic | Phenomenological Models |
| url | http://link.springer.com/article/10.1007/JHEP07(2019)041 |
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