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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

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:
Grant/Contract Number:
SC0010813; NPRP9-328-1-066; SC0011095; PIEF-GA-2013-625809; 648680 DARKHORIZONS
Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 96 Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
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)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1375268

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., 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.. 2017. "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.
@article{osti_1375268,
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}
}