تقرير
Search for the $t\to ch$ decay at hadron colliders
| العنوان: | Search for the $t\to ch$ decay at hadron colliders |
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| المؤلفون: | Arroyo-Ureña, M. A., Gaitán-Lozano, R., Herrera-Chacón, E. A., Y., J. H. Montes de Oca, Valencia-Pérez, T. A. |
| سنة النشر: | 2019 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | We study the observability for the flavor-changing decay of a top quark $t\to ch$ at the 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 $(\textit{bb-channel})$ and two photons $(\textit{$\gamma\gamma$-channel})$ are analyzed. A Monte Carlo analysis of the signal and the Standard Model (SM) background is computed. Center-of-mass energies of $\sqrt{s}=14,\;27\; $\text{and}$\; 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 $\kappa_i$ are presented and used in order to evaluate the branching ratio of the $t\to ch$ decay and the ($pp\to t\bar{t},\,t\to ch$) production cross section. We find that with the integrated luminosity achieved at the LHC, the $t\to ch$ 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. Comment: Version to be published in JHEP |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP07(2019)041 |
| URL الوصول: | http://arxiv.org/abs/1903.02718 |
| رقم الأكسشن: | edsarx.1903.02718 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP07(2019)041 |
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