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Title: Resonant di-Higgs boson production in the b b ¯ W W channel: Probing the electroweak phase transition at the LHC

Abstract

Here, we analyze the prospects for resonant di-Higgs production searches at the LHC in the $$b\bar{b}$$W +W - (W +→ℓ +ν , W -→ℓ -$$\bar{v}$$ ) channel, as a probe of the nature of the electroweak phase transition in Higgs portal extensions of the Standard Model. In order to maximize the sensitivity in this final state, we develop a new algorithm for the reconstruction of the $$b\bar{b}$$W +W - invariant mass in the presence of neutrinos from the W decays, building from a technique developed for the reconstruction of resonances decaying to τ +τ - pairs. We show that resonant di-Higgs production in the $$b\bar{b}$$W +W - channel could be a competitive probe of the electroweak phase transition already with the data sets to be collected by the CMS and ATLAS experiments in run 2 of the LHC. The increase in sensitivity with larger amounts of data accumulated during the high-luminosity LHC phase can be sufficient to enable a potential discovery of the resonant di-Higgs production in this channel.

Authors:
 [1];  [2];  [1];  [3];  [1];  [1];  [4]
  1. Texas A & M Univ., College Station, TX (United States). Dept. of Physics and Astronomy
  2. King's College London (United Kingdom). Dept. of Physics; Univ. of Sussex, Brighton (United Kingdom). Dept. of Physics and Astronomy
  3. Univ. of Massachusetts, Amherst, MA (United States). Dept. of Physics; California Inst. of Technology (CalTech), Pasadena, CA (United States). Kellogg Radiation Lab.
  4. Univ. of Massachusetts, Amherst, MA (United States). Dept. of Physics
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); Qatar National Research Fund - QNRF, Doha (Qatar); European Union (EU); European Research Council (ERC); Munich Inst. for Astro- and Particle Physics (MIAPP), European Organization for Nuclear Research (CERN), Geneva (Switzerland)
OSTI Identifier:
1424966
Alternate Identifier(s):
OSTI ID: 1375268
Grant/Contract Number:  
SC0010813; NPRP9-328-1-066; SC0011095; PIEF-GA-2013-625809; 648680 DARKHORIZONS
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Extensions of Higgs sector; Particle interactions; Spontaneous symmetry breaking; Hadron colliders

Citation Formats

Huang, T., No, J. M., Pernié, L., Ramsey-Musolf, M., Safonov, A., Spannowsky, M., and Winslow, P. Resonant di-Higgs boson production in the bb¯WW channel: Probing the electroweak phase transition at the LHC. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.035007.
Huang, T., No, J. M., Pernié, L., Ramsey-Musolf, M., Safonov, A., Spannowsky, M., & Winslow, P. Resonant di-Higgs boson production in the bb¯WW channel: Probing the electroweak phase transition at the LHC. United States. doi:10.1103/PhysRevD.96.035007.
Huang, T., No, J. M., Pernié, L., Ramsey-Musolf, M., Safonov, A., Spannowsky, M., and Winslow, P. Fri . "Resonant di-Higgs boson production in the bb¯WW channel: Probing the electroweak phase transition at the LHC". United States. doi:10.1103/PhysRevD.96.035007. https://www.osti.gov/servlets/purl/1424966.
@article{osti_1424966,
title = {Resonant di-Higgs boson production in the bb¯WW channel: Probing the electroweak phase transition at the LHC},
author = {Huang, T. and No, J. M. and Pernié, L. and Ramsey-Musolf, M. and Safonov, A. and Spannowsky, M. and Winslow, P.},
abstractNote = {Here, we analyze the prospects for resonant di-Higgs production searches at the LHC in the $b\bar{b}$W+W- (W+→ℓ+νℓ, W-→ℓ-$\bar{v}$ℓ) channel, as a probe of the nature of the electroweak phase transition in Higgs portal extensions of the Standard Model. In order to maximize the sensitivity in this final state, we develop a new algorithm for the reconstruction of the $b\bar{b}$W+W- invariant mass in the presence of neutrinos from the W decays, building from a technique developed for the reconstruction of resonances decaying to τ+τ- pairs. We show that resonant di-Higgs production in the $b\bar{b}$W+W- channel could be a competitive probe of the electroweak phase transition already with the data sets to be collected by the CMS and ATLAS experiments in run 2 of the LHC. The increase in sensitivity with larger amounts of data accumulated during the high-luminosity LHC phase can be sufficient to enable a potential discovery of the resonant di-Higgs production in this channel.},
doi = {10.1103/PhysRevD.96.035007},
journal = {Physical Review D},
number = 3,
volume = 96,
place = {United States},
year = {2017},
month = {8}
}

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    FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1
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