| Article | |
| Report number | arXiv:2211.07674 |
| Title | Prospects for exotic $h\rightarrow 4 \tau$ decays in single and di-Higgs boson production at the LHC and future hadron colliders |
| Author(s) | Adhikary, Amit (Warsaw U. ; Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (CERN) ; Barman, Rahool Kumar (Oklahoma State U.) ; Batell, Brian (Pittsburgh U.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Bose, Camellia (Bangalore, Indian Inst. Sci.) ; Qian, Zhuoni (Hangzhou Normal U.) ; Spannowsky, Michael (Durham U., IPPP) |
| Publication | 2024-03-01 |
| Imprint | 2022-11-14 |
| Number of pages | 35 |
| Note | 59 pages, 18 figures, 15 tables |
| In: | Phys. Rev. D 109 (2024) 055008 |
| DOI | 10.1103/PhysRevD.109.055008 (publication) |
| Subject category | hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | We study the prospects for observing exotic decays of the Standard Model Higgs boson $h$ into light beyond the Standard Model scalars $a$ with mass $m_{a} \lesssim m_{h}/2$ in the single Higgs and Higgs pair production channels at the high luminosity run of the Large Hadron Collider (HL-LHC). Discovery prospects for single Higgs production in the gluon-gluon fusion and vector boson fusion modes with the Higgs boson decaying via the exotic mode $h \to aa \to 4\tau$ are analyzed at the HL-LHC. The projected sensitivity for exotic Higgs decays in the non-resonant Higgs pair production channel $pp \to hh \to (h \to b\bar{b})(h \to aa \to 4\tau) \to 2b4\tau$ at the HL-LHC and a future $\sqrt{s}=100 $TeV hadron collider (FCC-hh) are also estimated. Furthermore, we study HL-LHC's potential reach for the Higgs-strahlung process in the $2b4\tau$ channel, taking into account the contamination from non-resonant Higgs pair production. Finally, the potential reach for resonant Higgs pair production in the $2b4\tau$ channel %$pp \to H \to (h \to b\bar{b})(h \to aa \to 4\tau)$ at the HL-LHC is also explored for several choices of ${m_{H},m_{a}}$. Our studies suggest that significant improvements over existing bounds are achievable in several production channels, motivating new dedicated searches for $h \rightarrow aa \rightarrow 4 \tau$ at the HL-LHC and future colliders. |
| Copyright/License | publication: © 2024 authors (License: CC BY 4.0), sponsored by SCOAP³ preprint: (License: CC BY 4.0) |
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Record created 2022-12-02, last modified 2024-03-28