skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Flavor-specific scalar mediators

Abstract

New singlet scalar bosons have broad phenomenological utility and feature prominently in many extensions of the standard model. Such scalars are often taken to have Higgs-like couplings to SM fermions in order to evade stringent flavor bounds, e.g., by assuming minimal flavor violation (MFV), which leads to a rather characteristic phenomenology. Here, we describe an alternative approach, based on an effective field theory framework, for a new scalar that dominantly couples to one specific SM fermion mass eigenstate. A simple flavor hypothesis ensures adequate suppression of new flavor changing neutral currents. We consider radiatively generated flavor changing neutral currents and scalar potential terms in such theories, demonstrating that they are often suppressed by small Yukawa couplings, and also describe the role of CP symmetry. We further demonstrate that such scalars can have masses that are significantly below the electroweak scale while still being natural, provided they are sufficiently weakly coupled to ordinary matter. In comparison to other flavor scenarios, our framework is rather versatile since a single (or a few) desired scalar couplings may be investigated in isolation.We illustrate this by discussing in detail the examples of an up-specific scalar mediator to dark matter and a muon-specific scalar that maymore » address the ~3σ muon anomalous magnetic moment discrepancy.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of Pittsburgh, Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1471773
Alternate Identifier(s):
OSTI ID: 1503860
Grant/Contract Number:  
SC0015634
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Batell, Brian, Freitas, Ayres, Ismail, Ahmed, and McKeen, David. Flavor-specific scalar mediators. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.055026.
Batell, Brian, Freitas, Ayres, Ismail, Ahmed, & McKeen, David. Flavor-specific scalar mediators. United States. doi:10.1103/PhysRevD.98.055026.
Batell, Brian, Freitas, Ayres, Ismail, Ahmed, and McKeen, David. Thu . "Flavor-specific scalar mediators". United States. doi:10.1103/PhysRevD.98.055026.
@article{osti_1471773,
title = {Flavor-specific scalar mediators},
author = {Batell, Brian and Freitas, Ayres and Ismail, Ahmed and McKeen, David},
abstractNote = {New singlet scalar bosons have broad phenomenological utility and feature prominently in many extensions of the standard model. Such scalars are often taken to have Higgs-like couplings to SM fermions in order to evade stringent flavor bounds, e.g., by assuming minimal flavor violation (MFV), which leads to a rather characteristic phenomenology. Here, we describe an alternative approach, based on an effective field theory framework, for a new scalar that dominantly couples to one specific SM fermion mass eigenstate. A simple flavor hypothesis ensures adequate suppression of new flavor changing neutral currents. We consider radiatively generated flavor changing neutral currents and scalar potential terms in such theories, demonstrating that they are often suppressed by small Yukawa couplings, and also describe the role of CP symmetry. We further demonstrate that such scalars can have masses that are significantly below the electroweak scale while still being natural, provided they are sufficiently weakly coupled to ordinary matter. In comparison to other flavor scenarios, our framework is rather versatile since a single (or a few) desired scalar couplings may be investigated in isolation.We illustrate this by discussing in detail the examples of an up-specific scalar mediator to dark matter and a muon-specific scalar that may address the ~3σ muon anomalous magnetic moment discrepancy.},
doi = {10.1103/PhysRevD.98.055026},
journal = {Physical Review D},
number = 5,
volume = 98,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.98.055026

Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Flavor Physics Constraints for Physics Beyond the Standard Model
journal, November 2010


Anomalous Z′ and diboson resonances at the LHC
journal, April 2018


Scalar simplified models for dark matter
journal, January 2015


( g − 2) μ and α( M 2 Z ) re-evaluated using new precise data
journal, June 2011

  • Hagiwara, Kaoru; Liao, Ruofan; Martin, Alan D.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 8
  • DOI: 10.1088/0954-3899/38/8/085003

Review of Particle Physics
journal, October 2016


Muon anomalous magnetic moment through the leptonic Higgs portal
journal, April 2017


Dark Higgs bosons at the ForwArd Search ExpeRiment
journal, March 2018


The Minimal Model of nonbaryonic dark matter: a singlet scalar
journal, December 2001


The muon anomalous magnetic moment and a new light gauge boson
journal, July 2001


Disentangling Mass and Mixing Hierarchies
journal, October 2015


Problem of Strong P and T Invariance in the Presence of Instantons
journal, January 1978


Gauge anomalies in an effective field theory
journal, September 1991


U -boson production in e + e annihilations, ψ and Υ decays, and light dark matter
journal, June 2007


Flavour physics from an approximate U(2)3 symmetry
journal, July 2012

  • Barbieri, Riccardo; Buttazzo, Dario; Sala, Filippo
  • Journal of High Energy Physics, Vol. 2012, Issue 7
  • DOI: 10.1007/JHEP07(2012)181

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

The COMPASS experiment at CERN
journal, July 2007

  • Abbon, P.; Albrecht, E.; Alexakhin, V. Yu.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 577, Issue 3
  • DOI: 10.1016/j.nima.2007.03.026

Towards the next generation of simplified Dark Matter models
journal, June 2017


Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
journal, December 2013


Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data
journal, November 2015


Gauge singlet scalars as cold dark matter
journal, September 1994


Search for the Higgs portal to a singlet fermionic dark matter at the LHC
journal, February 2012

  • Baek, Seungwon; Ko, P.; Park, Wan-Il
  • Journal of High Energy Physics, Vol. 2012, Issue 2
  • DOI: 10.1007/JHEP02(2012)047

S -channel dark matter simplified models and unitarity
journal, December 2016

  • Englert, Christoph; McCullough, Matthew; Spannowsky, Michael
  • Physics of the Dark Universe, Vol. 14
  • DOI: 10.1016/j.dark.2016.09.002

Search for a muonic dark force at BaBar
journal, July 2016


New Constraints on Light Vectors Coupled to Anomalous Currents
journal, October 2017


Revised experimental upper limit on the electric dipole moment of the neutron
journal, November 2015


Minimal renormalizable simplified dark matter model with a pseudoscalar mediator
journal, April 2017


Dark forces coupled to nonconserved currents
journal, October 2017


The second-order weak correction to (g - 2) of the muon in arbitrary gauge models
journal, May 1978


Measurements of Four-Lepton Production at the Z Resonance in p p Collisions at s = 7 and 8 TeV with ATLAS
journal, June 2014


Discovering new light states at neutrino experiments
journal, December 2010


ALPtraum: ALP production in proton beam dump experiments
journal, February 2016

  • Döbrich, Babette; Jaeckel, Joerg; Kahlhoefer, Felix
  • Journal of High Energy Physics, Vol. 2016, Issue 2
  • DOI: 10.1007/JHEP02(2016)018

Effects of new leptons in electroweak precision data
journal, July 2008


Probing MeV Dark Matter at Low-Energy e + e Colliders
journal, April 2006


CP Conservation in the Presence of Pseudoparticles
journal, June 1977


First Dark Matter Search Results from the XENON1T Experiment
journal, October 2017


Search for neutral metastable penetrating particles produced in the SLAC beam dump
journal, December 1988


Lepton-flavor-violating Higgs decay h → μτ and muon anomalous magnetic moment in a general two Higgs doublet model
journal, May 2015

  • Omura, Yuji; Senaha, Eibun; Tobe, Kazuhiro
  • Journal of High Energy Physics, Vol. 2015, Issue 5
  • DOI: 10.1007/JHEP05(2015)028

Muon beam experiments to probe the dark sector
journal, June 2017


Erratum: Testing the muon g-2 anomaly at the LHC
journal, September 2014

  • Freitas, A.; Lykken, J.; Kell, S.
  • Journal of High Energy Physics, Vol. 2014, Issue 9
  • DOI: 10.1007/JHEP09(2014)155

micrOMEGAs_3: A program for calculating dark matter observables
journal, March 2014


Secluded U(1) below the weak scale
journal, November 2009


Implications of a light “dark Higgs” solution to the g μ 2 discrepancy
journal, February 2016


A facility to search for hidden particles at the CERN SPS: the SHiP physics case
journal, October 2016


Testing the muon g-2 anomaly at the LHC
journal, May 2014

  • Freitas, A.; Lykken, J.; Kell, S.
  • Journal of High Energy Physics, Vol. 2014, Issue 5
  • DOI: 10.1007/JHEP05(2014)145

Coupling-mass mapping of dijet peak searches
journal, August 2013


ForwArd Search ExpeRiment at the LHC
journal, February 2018


Dark side of Higgs diphoton decays and muon g 2
journal, November 2012


Extending theories on muon-specific interactions
journal, November 2015


The flavor-locked flavorful two Higgs doublet model
journal, March 2018

  • Altmannshofer, Wolfgang; Gori, Stefania; Robinson, Dean J.
  • Journal of High Energy Physics, Vol. 2018, Issue 3
  • DOI: 10.1007/JHEP03(2018)129

EPOS LHC: Test of collective hadronization with data measured at the CERN Large Hadron Collider
journal, September 2015


Less minimal flavour violation
journal, October 2012

  • Barbieri, Riccardo; Buttazzo, Dario; Sala, Filippo
  • Journal of High Energy Physics, Vol. 2012, Issue 10
  • DOI: 10.1007/JHEP10(2012)040

Erratum: Coupling-mass mapping of dijet peak searches [Phys. Rev. D 88 , 035021 (2013)]
journal, October 2014


Constraints on light dark matter and U bosons, from ψ , Υ , K + , π ° , η and η decays
journal, September 2006


Scalar dark matter candidates
journal, April 2004


Anomaly-free sets of fermions
journal, August 2006

  • Batra, Puneet; Dobrescu, Bogdan A.; Spivak, David
  • Journal of Mathematical Physics, Vol. 47, Issue 8
  • DOI: 10.1063/1.2222081

Revised constraints and Belle II sensitivity for visible and invisible axion-like particles
journal, December 2017

  • Dolan, Matthew J.; Ferber, Torben; Hearty, Christopher
  • Journal of High Energy Physics, Vol. 2017, Issue 12
  • DOI: 10.1007/JHEP12(2017)094

Search for Narrow Resonances in Dijet Final States at s = 8 TeV with the Novel CMS Technique of Data Scouting
journal, July 2016


Search for new particles decaying into dijets in proton-antiproton collisions at s = 1.96 TeV
journal, June 2009


Muonic hydrogen and MeV forces
journal, May 2011


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


Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
journal, January 2018

  • Sirunyan, A. M.; Tumasyan, A.; Adam, W.
  • Journal of High Energy Physics, Vol. 2018, Issue 1
  • DOI: 10.1007/JHEP01(2018)097

Chiral estimate of the electric dipole moment of the neutron in quantum chromodynamics
journal, December 1979


Scalar Phantoms
journal, October 1985


On dark matter interactions with the Standard Model through an anomalous Z′
journal, October 2017

  • Ismail, Ahmed; Katz, Andrey; Racco, Davide
  • Journal of High Energy Physics, Vol. 2017, Issue 10
  • DOI: 10.1007/JHEP10(2017)165

A measurement of two-jet decays of theW andZ bosons at the CERN $$\bar p$$ p collider
journal, March 1991

  • Alitti, J.; Ansari, R.; Ansorge, R. E.
  • Zeitschrift für Physik C Particles and Fields, Vol. 49, Issue 1
  • DOI: 10.1007/BF01570793

Some aspects of instantons
journal, September 1977

  • Peccei, R. D.; Quinn, H. R.
  • Il Nuovo Cimento A, Vol. 41, Issue 2
  • DOI: 10.1007/BF02730110

Constraints on light mediators: Confronting dark matter searches with B physics
journal, December 2013


Search for new particles decaying to dijets at CDF
journal, May 1997


Phenomenology of a very light scalar (100 MeV < m h < 10 GeV) mixing with the SM Higgs
journal, February 2014

  • Clarke, Jackson D.; Foot, Robert; Volkas, Raymond R.
  • Journal of High Energy Physics, Vol. 2014, Issue 2
  • DOI: 10.1007/JHEP02(2014)123

Constraining Dark Matter Interactions with Pseudoscalar and Scalar Mediators Using Collider Searches for Multijets plus Missing Transverse Energy
journal, October 2015


Simplified dark matter models for the Galactic Center gamma-ray excess
journal, June 2014


A New Light Boson?
journal, January 1978


Simplified models for dark matter searches at the LHC
journal, September 2015


Status of the Fermilab muon ( g − 2) experiment
journal, June 2010


New Parity-Violating Muonic Forces and the Proton Charge Radius
journal, June 2011


Flavour-changing decays of a 125 GeV Higgs-like particle
journal, June 2012