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| CMS-PAS-HIG-22-012 | ||
| Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $ \gamma\gamma\tau\tau $ final state | ||
| CMS Collaboration | ||
| 26 March 2024 | ||
| Abstract: Proton-proton interactions resulting in final states with two photons and two tau leptons are studied in a search for the production of two scalar bosons. The search considers both nonresonant production of a Higgs boson pair, HH, and resonant production via a new boson X which decays either to HH or to H and a new scalar Y. The analysis uses 138 fb$^{-1}$ of data collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC from 2016 to 2018. An observed (expected) upper limit at the 95% confidence level (CL) on the HH production cross section is found to be 930 (740) fb, corresponding to 33 (26) times the standard model prediction. The observed (expected) constraint on the Higgs boson self-coupling is $ -13 (-11) < \kappa_\lambda < $ 18 (16) at the 95% CL. Observed (expected) upper limits at the 95% CL for the $ \mathrm{X}\to\mathrm{HH} $ cross section are found to be within 140 to 2200 (200 to 1700) fb depending on $ m_\mathrm{X} $. In the $ \mathrm{X}\to\mathrm{YH} $ scenario, the most significant excess is found for $ m_\mathrm{X}= $ 525 GeV and $ m_\mathrm{Y}= $ 115 GeV in the $ \mathrm{Y}\to\gamma\gamma $ decay channel and has a local (global) significance of 3.4 (0.1) standard deviations. In the $ \mathrm{Y}\to\tau\tau $ decay channel, an excess at $ m_\mathrm{X}= $ 320 GeV and $ m_\mathrm{Y}= $ 60 GeV is found with a local (global) significance of 2.6 (2.2) standard deviations. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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