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Title: Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry

Abstract

Here, the LHC phenomenology of a low-scale gauged flavor symmetry model with inverted hierarchy is studied, through introduction of a simplified model of broken flavor symmetry. A new scalar (a flavon) and a new neutral top-philic massive gauge boson emerge with mass in the TeV range, along with a new heavy fermion associated with the standard model top quark. After checking constraints from electroweak precision observables, we investigate the influence of the model on Higgs boson physics, notably on its production cross section and decay branching fractions. Limits on the flavon φ from heavy Higgs boson searches at the LHC at 7 and 8 TeV are presented. The branching fractions of the flavon are computed as a function of the flavon mass and the Higgs-flavon mixing angle. We also explore possible discovery of the flavon at 14 TeV, particularly via the φ → Z 0Z 0 decay channel in the 2ℓ2ℓ' final state, and through standard model Higgs boson pair production φ → hh in the b¯bγγ final state. We conclude that the flavon mass range up to 500 GeV could be probed down to quite small values of the Higgs-flavon mixing angle with 100 fb –1 of integrated luminositymore » at 14 TeV.« less

Authors:
 [1];  [2];  [3];  [4]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of California, Santa Barbara, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of California, Santa Barbara, CA (United States); Peking Univ., Beijing (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of California, Santa Barbara, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
OSTI Identifier:
1393960
Alternate Identifier(s):
OSTI ID: 1180177; OSTI ID: 1602028
Grant/Contract Number:  
AC02-06CH11357; FG02-91ER40618; SC0011702; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 90; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Higgs boson; Higgs-flavon mixing; LHC phenomenology; broken flavor symmetry; flavon

Citation Formats

Berger, Edmond L., Giddings, Steven B., Wang, Haichen, and Zhang, Hao. Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.076004.
Berger, Edmond L., Giddings, Steven B., Wang, Haichen, & Zhang, Hao. Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry. United States. doi:10.1103/PhysRevD.90.076004.
Berger, Edmond L., Giddings, Steven B., Wang, Haichen, and Zhang, Hao. Fri . "Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry". United States. doi:10.1103/PhysRevD.90.076004. https://www.osti.gov/servlets/purl/1393960.
@article{osti_1393960,
title = {Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry},
author = {Berger, Edmond L. and Giddings, Steven B. and Wang, Haichen and Zhang, Hao},
abstractNote = {Here, the LHC phenomenology of a low-scale gauged flavor symmetry model with inverted hierarchy is studied, through introduction of a simplified model of broken flavor symmetry. A new scalar (a flavon) and a new neutral top-philic massive gauge boson emerge with mass in the TeV range, along with a new heavy fermion associated with the standard model top quark. After checking constraints from electroweak precision observables, we investigate the influence of the model on Higgs boson physics, notably on its production cross section and decay branching fractions. Limits on the flavon φ from heavy Higgs boson searches at the LHC at 7 and 8 TeV are presented. The branching fractions of the flavon are computed as a function of the flavon mass and the Higgs-flavon mixing angle. We also explore possible discovery of the flavon at 14 TeV, particularly via the φ → Z0Z0 decay channel in the 2ℓ2ℓ' final state, and through standard model Higgs boson pair production φ → hh in the b¯bγγ final state. We conclude that the flavon mass range up to 500 GeV could be probed down to quite small values of the Higgs-flavon mixing angle with 100 fb–1 of integrated luminosity at 14 TeV.},
doi = {10.1103/PhysRevD.90.076004},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 7,
volume = 90,
place = {United States},
year = {2014},
month = {10}
}

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Works referenced in this record:

CERN LHC phenomenology of an extended standard model with a real scalar singlet
journal, February 2008


New constraint on a strongly interacting Higgs sector
journal, August 1990


Gauging the way to MFV
journal, April 2013

  • Krnjaic, Gordan; Stolarski, Daniel
  • Journal of High Energy Physics, Vol. 2013, Issue 4
  • DOI: 10.1007/JHEP04(2013)064

New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
journal, July 2002


Threshold resummation effects in Higgs boson pair production at the LHC
journal, July 2013

  • Shao, Ding Yu; Li, Chong Sheng; Li, Hai Tao
  • Journal of High Energy Physics, Vol. 2013, Issue 7
  • DOI: 10.1007/JHEP07(2013)169

Probing the Higgs portal at the LHC through resonant di-Higgs production
journal, May 2014


Low scale flavor gauge symmetries
journal, November 2010

  • Grinstein, Benjamín; Redi, Michele; Villadoro, Giovanni
  • Journal of High Energy Physics, Vol. 2010, Issue 11
  • DOI: 10.1007/JHEP11(2010)067

Flavorful Z signatures at LHC and ILC
journal, October 2008


Two-and three-body decay modes of SUSY Higgs particles
journal, April 1996

  • Djouadi, A.; Kalinowski, J.; Zerwas, P. M.
  • Zeitschrift f�r Physik C Particles and Fields, Vol. 70, Issue 3
  • DOI: 10.1007/s002880050121

LHC searches for the heavy Higgs boson via two b jets plus diphoton
journal, June 2014


Unitary Symmetry and Leptonic Decays
journal, June 1963


Searches for new physics using the t t ¯ invariant mass distribution in p p collisions at s = 8 TeV
journal, November 2013


MadGraph 5: going beyond
journal, June 2011

  • Alwall, Johan; Herquet, Michel; Maltoni, Fabio
  • Journal of High Energy Physics, Vol. 2011, Issue 6
  • DOI: 10.1007/JHEP06(2011)128

Phenomenology of flavon fields at the LHC
journal, February 2010


Minimal extension of the standard model scalar sector
journal, February 2007

  • O’Connell, Donal; Ramsey-Musolf, Michael J.; Wise, Mark B.
  • Physical Review D, Vol. 75, Issue 3
  • DOI: 10.1103/PhysRevD.75.037701

Discrete minimal flavor violation
journal, October 2009


Sequential flavor symmetry breaking
journal, August 2009


Z γ γ production with leptonic decays and triple photon production at next-to-leading order QCD
journal, October 2011


Measurement of the properties of a Higgs boson in the four-lepton final state
journal, May 2014


Calculation of associated production of a top quark and a W at the LHC
journal, November 2011


Higgs in space!
journal, April 2010

  • Jackson, C. B.; Servant, Géraldine; Shaughnessy, Gabe
  • Journal of Cosmology and Astroparticle Physics, Vol. 2010, Issue 04
  • DOI: 10.1088/1475-7516/2010/04/004

The top quark and Higgs boson masses and the stability of the electroweak vacuum
journal, September 2012


Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
journal, September 2012


Double take on new physics in double Higgs boson production
journal, July 2014


PYTHIA 6.4 physics and manual
journal, May 2006


See-saw masses for quarks and leptons in SU(5)
journal, April 2011


Stabilizing electroweak vacuum in a vectorlike fermion model
journal, July 2014


Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
journal, September 2012


The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
journal, July 2014

  • Alwall, J.; Frederix, R.; Frixione, S.
  • Journal of High Energy Physics, Vol. 2014, Issue 7
  • DOI: 10.1007/JHEP07(2014)079

Scalar one-loop integrals
journal, January 1979


Low-energy theorems in Higgs physics
journal, December 1995

  • Kniehl, Bernd A.; Spira, Michael
  • Zeitschrift für Physik C: Particles and Fields, Vol. 69, Issue 1
  • DOI: 10.1007/s002880050007

Mass matrix models: the sequel
journal, June 1994


C P -Violation in the Renormalizable Theory of Weak Interaction
journal, February 1973

  • Kobayashi, Makoto; Maskawa, Toshihide
  • Progress of Theoretical Physics, Vol. 49, Issue 2
  • DOI: 10.1143/PTP.49.652

Global analysis of general S U ( 2 ) × S U ( 2 ) × U ( 1 ) models with precision data
journal, August 2010


Minimal flavour violation: an effective field theory approach
journal, November 2002


Mass matrix models
journal, June 1993


A phenomenological profile of the Higgs boson
journal, January 1976


Higgs boson pair production at the LHC in the b b ¯ W + W channel
journal, January 2013


Higgs low-energy theorem (and its corrections) in composite models
journal, October 2012

  • Gillioz, M.; Gröber, R.; Grojean, C.
  • Journal of High Energy Physics, Vol. 2012, Issue 10
  • DOI: 10.1007/JHEP10(2012)004

Hierarchy of quark masses, cabibbo angles and CP violation
journal, January 1979


Little flavor: A model of weak-scale flavor physics
journal, June 2013


The electroweak fit of the standard model after the discovery of a new boson at the LHC
journal, November 2012


Derivation of gauge invariance from high-energy unitarity bounds on the S matrix
journal, August 1974

  • Cornwall, John M.; Levin, David N.; Tiktopoulos, George
  • Physical Review D, Vol. 10, Issue 4
  • DOI: 10.1103/PhysRevD.10.1145

Matching matrix elements and shower evolution for top-pair production in hadronic collisions
journal, January 2007

  • Mangano, Michelangelo L.; Moretti, Mauro; Piccinini, Fulvio
  • Journal of High Energy Physics, Vol. 2007, Issue 01
  • DOI: 10.1088/1126-6708/2007/01/013

Phenomenology of a gauged SU(3)3 flavour model
journal, March 2012

  • Buras, Andrzej J.; Carlucci, Maria Valentina; Merlo, Luca
  • Journal of High Energy Physics, Vol. 2012, Issue 3
  • DOI: 10.1007/JHEP03(2012)088

One-loop corrections for e+e− annihilation into μ+μ− in the Weinberg model
journal, November 1979


Top hypercharge
journal, December 2007