Prospects for Charged Higgs Bosons in Natural SUSY Models at the High-Luminosity LHC
Abstract
We continue our examination of prospects for the discovery of heavy Higgs bosons of natural SUSY (natSUSY) models at the high luminosity LHC (HL-LHC), this time focusing on charged Higgs bosons. In natSUSY, higgsinos are expected at the few hundred GeV scale whilst electroweak gauginos inhabit the TeV scale and the heavy Higgs bosons, H, A and H± could range up tens of TeV without jeopardizing naturalness. For TeV-scale heavy SUSY Higgs bosons H, A and H±, as currently required by LHC searches, SUSY decays into gaugino plus higgsino can dominate H± decays provided these decays are kinematically accessible. The visible decay products of higgsinos are soft making them largely invisible, whilst the gauginos decay to W, Z or h plus missing transverse energy (ET). Charged Higgs bosons are dominantly produced at LHC14 via the parton subprocess, gb→H±t. In this paper, we examine the viability of observing signatures from H±→τν, H±→tb and H±→W,Z,h+ET events produced in association with a top quark at the HL-LHC over large Standard Model (SM) backgrounds from (mainly) tt¯, tt¯V and tt¯h production (where V=W,Z). We find that the greatest reach is found via the SM H±(→τν)+t channel with a subdominant contribution from the H±(→tb)+t channel.more »
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1992561
- Resource Type:
- Published Article
- Journal Name:
- Symmetry
- Additional Journal Information:
- Journal Name: Symmetry Journal Volume: 15 Journal Issue: 8; Journal ID: ISSN 2073-8994
- Publisher:
- MDPI AG
- Country of Publication:
- Switzerland
- Language:
- English
Citation Formats
Baer, Howard, Barger, Vernon, Tata, Xerxes, and Zhang, Kairui. Prospects for Charged Higgs Bosons in Natural SUSY Models at the High-Luminosity LHC. Switzerland: N. p., 2023.
Web. doi:10.3390/sym15081475.
Baer, Howard, Barger, Vernon, Tata, Xerxes, & Zhang, Kairui. Prospects for Charged Higgs Bosons in Natural SUSY Models at the High-Luminosity LHC. Switzerland. https://doi.org/10.3390/sym15081475
Baer, Howard, Barger, Vernon, Tata, Xerxes, and Zhang, Kairui. Tue .
"Prospects for Charged Higgs Bosons in Natural SUSY Models at the High-Luminosity LHC". Switzerland. https://doi.org/10.3390/sym15081475.
@article{osti_1992561,
title = {Prospects for Charged Higgs Bosons in Natural SUSY Models at the High-Luminosity LHC},
author = {Baer, Howard and Barger, Vernon and Tata, Xerxes and Zhang, Kairui},
abstractNote = {We continue our examination of prospects for the discovery of heavy Higgs bosons of natural SUSY (natSUSY) models at the high luminosity LHC (HL-LHC), this time focusing on charged Higgs bosons. In natSUSY, higgsinos are expected at the few hundred GeV scale whilst electroweak gauginos inhabit the TeV scale and the heavy Higgs bosons, H, A and H± could range up tens of TeV without jeopardizing naturalness. For TeV-scale heavy SUSY Higgs bosons H, A and H±, as currently required by LHC searches, SUSY decays into gaugino plus higgsino can dominate H± decays provided these decays are kinematically accessible. The visible decay products of higgsinos are soft making them largely invisible, whilst the gauginos decay to W, Z or h plus missing transverse energy (ET). Charged Higgs bosons are dominantly produced at LHC14 via the parton subprocess, gb→H±t. In this paper, we examine the viability of observing signatures from H±→τν, H±→tb and H±→W,Z,h+ET events produced in association with a top quark at the HL-LHC over large Standard Model (SM) backgrounds from (mainly) tt¯, tt¯V and tt¯h production (where V=W,Z). We find that the greatest reach is found via the SM H±(→τν)+t channel with a subdominant contribution from the H±(→tb)+t channel. Unlike for neutral Higgs searches, the SUSY decay modes appear to be unimportant for H± searches at the HL-LHC. We delineate regions of the mA vs. tanβ plane, mostly around mA∼ 1–2 TeV, where signals from charged Higgs bosons would serve to confirm signals of a heavy, neutral Higgs boson at the 5σ level or, alternatively, to exclude heavy Higgs bosons at the 95% confidence level at the high luminosity LHC.},
doi = {10.3390/sym15081475},
journal = {Symmetry},
number = 8,
volume = 15,
place = {Switzerland},
year = {Tue Jul 25 00:00:00 EDT 2023},
month = {Tue Jul 25 00:00:00 EDT 2023}
}
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