Exotic decays of the 125 GeV Higgs boson at future e+e– colliders
Abstract
Discovery of unexpected properties of the Higgs boson offers an intriguing opportunity of shedding light on some of the most profound puzzles in particle physics. The Beyond Standard Model (BSM) decays of the Higgs boson could reveal new physics in a direct manner. Future electron-positron lepton colliders operating as Higgs factories, including CEPC, FCC-ee and ILC, with the advantages of a clean collider environment and large statistics, could greatly enhance the sensitivity in searching for these BSM decays. In this work, we perform a general study of Higgs exotic decays at future $e^+e^-$ lepton colliders, focusing on the Higgs decays with hadronic final states and/or missing energy, which are very challenging for the High-Luminosity program of the Large Hadron Collider (HL-LHC). We show that with simple selection cuts, $$O(10^{-3}\sim10^{-5})$$ limits on the Higgs exotic decay branching fractions can be achieved using the leptonic decaying spectator $$Z$$ boson in the associated production mode $$e^+e^-\rightarrow Z H$$. We further discuss the interplay between the detector performance and Higgs exotic decay, and other possibilities of exotic decays. Finally, our work is a first step in a comprehensive study of Higgs exotic decays at future lepton colliders, which is a key ingredient of Higgs physics that deserves further investigation.
- Authors:
-
[1];
[3]
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- The Univ. of Chicago, Chicago, IL (United States)
- Chinese Academy of Sciences (CAS), Beijing (China)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1345611
- Report Number(s):
- FERMILAB-PUB-16-608-T; arXiv:1612.09284
Journal ID: ISSN 1674-1137; 1507128
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Chinese Physics C, High Energy Physics and Nuclear Physics
- Additional Journal Information:
- Journal Volume: 41; Journal Issue: 6; Journal ID: ISSN 1674-1137
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Higgs; exotic decay; BSM; lepton collider; Higgs factory
Citation Formats
Liu, Zhen, Wang, Lian -Tao, and Zhang, Hao. Exotic decays of the 125 GeV Higgs boson at future e+e– colliders. United States: N. p., 2017.
Web. doi:10.1088/1674-1137/41/6/063102.
Liu, Zhen, Wang, Lian -Tao, & Zhang, Hao. Exotic decays of the 125 GeV Higgs boson at future e+e– colliders. United States. https://doi.org/10.1088/1674-1137/41/6/063102
Liu, Zhen, Wang, Lian -Tao, and Zhang, Hao. Thu .
"Exotic decays of the 125 GeV Higgs boson at future e+e– colliders". United States. https://doi.org/10.1088/1674-1137/41/6/063102. https://www.osti.gov/servlets/purl/1345611.
@article{osti_1345611,
title = {Exotic decays of the 125 GeV Higgs boson at future e+e– colliders},
author = {Liu, Zhen and Wang, Lian -Tao and Zhang, Hao},
abstractNote = {Discovery of unexpected properties of the Higgs boson offers an intriguing opportunity of shedding light on some of the most profound puzzles in particle physics. The Beyond Standard Model (BSM) decays of the Higgs boson could reveal new physics in a direct manner. Future electron-positron lepton colliders operating as Higgs factories, including CEPC, FCC-ee and ILC, with the advantages of a clean collider environment and large statistics, could greatly enhance the sensitivity in searching for these BSM decays. In this work, we perform a general study of Higgs exotic decays at future $e^+e^-$ lepton colliders, focusing on the Higgs decays with hadronic final states and/or missing energy, which are very challenging for the High-Luminosity program of the Large Hadron Collider (HL-LHC). We show that with simple selection cuts, $O(10^{-3}\sim10^{-5})$ limits on the Higgs exotic decay branching fractions can be achieved using the leptonic decaying spectator $Z$ boson in the associated production mode $e^+e^-\rightarrow Z H$. We further discuss the interplay between the detector performance and Higgs exotic decay, and other possibilities of exotic decays. Finally, our work is a first step in a comprehensive study of Higgs exotic decays at future lepton colliders, which is a key ingredient of Higgs physics that deserves further investigation.},
doi = {10.1088/1674-1137/41/6/063102},
journal = {Chinese Physics C, High Energy Physics and Nuclear Physics},
number = 6,
volume = 41,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}
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