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Title: Singlet-catalyzed electroweak phase transitions in the 100 TeV frontier

We study the prospects for probing a gauge singlet scalar-driven strong first-order electroweak phase transition with a future proton-proton collider in the 100 TeV range. Singlet-Higgs mixing enables resonantly enhanced di-Higgs production, potentially aiding discovery prospects. We perform Monte Carlo scans of the parameter space to identify regions associated with a strong first-order electroweak phase transition, analyze the corresponding di-Higgs signal, and select a set of benchmark points that span the range of di-Higgs signal strengths. For the b$$\bar{b}$$γγ and 4τ final states, we investigate discovery prospects for each benchmark point for the high-luminosity phase of the Large Hadron Collider and for a future pp collider with s=50, 100, or 200 TeV. We find that any of these future collider scenarios could significantly extend the reach beyond that of the high-luminosity LHC, and that with s=100 TeV (200 TeV) and 30 ab-1, the full region of parameter space favorable to strong first-order electroweak phase transitions is almost fully (fully) discoverable.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Duke Univ., Durham, NC (United States)
  2. Univ. of Massachusetts, Amherst, MA (United States)
  3. Univ. of Sussex, Brighton (United Kingdom)
Publication Date:
Report Number(s):
ACFI-T16-12; FERMILAB-PUB-16-670; arXiv:1605.06123
Journal ID: ISSN 2470-0010; 1463286
Grant/Contract Number:
AC02-07CH11359; SC0011095
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1354878
Alternate Identifier(s):
OSTI ID: 1328628