Towards a supersymmetric description of the Fermi Galactic center excess

Cahill-Rowley, M.; Gainer, J. S.; Hewett, J. L.; Rizzo, T. G.

doi:10.1007/JHEP02(2015)057

Title: Towards a supersymmetric description of the Fermi Galactic center excess

Abstract

We attempt to build a model that describes the Fermi galactic gamma-ray excess (FGCE) within a UV-complete Supersymmetric framework; we find this to be highly non-trivial. At the very least a successful Supersymmetric explanation must have several important ingredients in order to fit the data and satisfy other theoretical and experimental constraints. Under the assumption that a single annihilation mediator is responsible for both the observed relic density as well as the FGCE, we show that the requirements are not easily satisfied in many TeV-scale SUSY models, but can be met with some model building effort in the general NMSSM with ~ 10 parameters beyond the MSSM. We find that the data selects a particular region of the parameter space with a mostly singlino lightest Supersymmetric particle and a relatively light CP-odd Higgs boson that acts as the mediator for dark matter annihilation. We study the predictions for various observables within this parameter space, and find that searches for this light CP-odd state at the LHC, as well as searches for the direct detection of dark matter, are likely to be quite challenging. It is possible that a signature could be observed in the flavor sector; however, indirect detection remainsmore » the best probe of this scenario.« less

Authors:

Cahill-Rowley, M. ^[1]; Gainer, J. S. ^[2]; Hewett, J. L. ^[1]; Rizzo, T. G. ^[1]

SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
Univ. of Florida, Gainesville, FL (United States)

Publication Date:: Tue Feb 10 00:00:00 EST 2015

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1213910

Grant/Contract Number:: AC03-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 2; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Supersymmetry Phenomenology

Citation Formats


                    Cahill-Rowley, M., Gainer, J. S., Hewett, J. L., and Rizzo, T. G. Towards a supersymmetric description of the Fermi Galactic center excess.  United States: N. p., 2015. 
Web.  doi:10.1007/JHEP02(2015)057.

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                    Cahill-Rowley, M., Gainer, J. S., Hewett, J. L., & Rizzo, T. G. Towards a supersymmetric description of the Fermi Galactic center excess.  United States.  https://doi.org/10.1007/JHEP02(2015)057

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                    Cahill-Rowley, M., Gainer, J. S., Hewett, J. L., and Rizzo, T. G. Tue .  
"Towards a supersymmetric description of the Fermi Galactic center excess".  United States.  https://doi.org/10.1007/JHEP02(2015)057.  https://www.osti.gov/servlets/purl/1213910.

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@article{osti_1213910,

  title        = {Towards a supersymmetric description of the Fermi Galactic center excess},

  author       = {Cahill-Rowley, M. and Gainer, J. S. and Hewett, J. L. and Rizzo, T. G.},

  abstractNote = {We attempt to build a model that describes the Fermi galactic gamma-ray excess (FGCE) within a UV-complete Supersymmetric framework; we find this to be highly non-trivial. At the very least a successful Supersymmetric explanation must have several important ingredients in order to fit the data and satisfy other theoretical and experimental constraints. Under the assumption that a single annihilation mediator is responsible for both the observed relic density as well as the FGCE, we show that the requirements are not easily satisfied in many TeV-scale SUSY models, but can be met with some model building effort in the general NMSSM with ~ 10 parameters beyond the MSSM. We find that the data selects a particular region of the parameter space with a mostly singlino lightest Supersymmetric particle and a relatively light CP-odd Higgs boson that acts as the mediator for dark matter annihilation. We study the predictions for various observables within this parameter space, and find that searches for this light CP-odd state at the LHC, as well as searches for the direct detection of dark matter, are likely to be quite challenging. It is possible that a signature could be observed in the flavor sector; however, indirect detection remains the best probe of this scenario.},

  doi          = {10.1007/JHEP02(2015)057},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 2,

  volume       = 2015,

  place        = {United States},

  year         = {Tue Feb 10 00:00:00 EST 2015},

  month        = {Tue Feb 10 00:00:00 EST 2015}

}

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Title: Towards a supersymmetric description of the Fermi Galactic center excess

Abstract

Citation Formats

An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV journal, April 2009

Measurement of Separate Cosmic-Ray Electron and Positron Spectra with the Fermi Large Area Telescope journal, January 2012

First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV journal, April 2013

Fermi LAT search for internal bremsstrahlung signatures from dark matter annihilation journal, July 2012

A tentative gamma-ray line from Dark Matter annihilation at the Fermi Large Area Telescope journal, August 2012

Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre journal, September 2012

Dark matter annihilation in the Galactic Center as seen by the Fermi Gamma Ray Space Telescope journal, March 2011

Detection of a gamma-ray source in the Galactic Center consistent with extended emission from dark matter annihilation and concentrated astrophysical emission journal, October 2012

Two emission mechanisms in the Fermi Bubbles: A possible signal of annihilating dark matter journal, September 2013

Bounds on dark matter interpretation of Fermi-LAT GeV excess journal, November 2014

CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI -LAT DIFFUSE MEASUREMENTS journal, November 2012

Constraints on the pMSSM from LAT observations of dwarf spheroidal galaxies journal, April 2012

Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope journal, December 2011

Higgs portal vector dark matter for GeV scale γ-ray excess from galactic center journal, September 2014

The windows for kinetically mixed Z′-mediated dark matter and the galactic center gamma ray excess journal, August 2014

A simplified 2HDM with a scalar dark matter and the galactic center gamma-ray excess journal, December 2014

Galactic center γ-ray excess in hidden sector DM models with dark gauge symmetries: local Z 3 symmetry as an example journal, January 2015

Connection of gamma rays, dark matter, and Higgs boson searches at the LHC journal, October 2012

Dark Matter with Pseudoscalar-Mediated Interactions Explains the DAMA Signal and the Galactic Center Excess journal, January 2015

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NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM with GUT scale boundary conditions dataset, January 2019

A taste of dark matter: flavour constraints on pseudoscalar mediators journal, March 2015

CONFRONTING GALACTIC AND EXTRAGALACTIC γ -RAYS OBSERVED BY FERMI -LAT WITH ANNIHILATING DARK MATTER IN AN INERT HIGGS DOUBLET MODEL journal, August 2015

WIMP dark matter candidates and searches—current status and future prospects journal, May 2018

Wavelet-based techniques for the gamma-ray sky journal, July 2016

Scalar split WIMPs in future direct detection experiments journal, March 2016

Probing a light CP-odd scalar in di-top-associated production at the LHC journal, October 2015

The higgsino–singlino sector of the NMSSM: combined constraints from dark matter and the LHC journal, September 2018

NMSSM explanations of the Galactic center gamma ray excess and promising LHC searches text, January 2014

Signals of a Light Dark Force in the Galactic Center text, January 2014

Interpreting the galactic center gamma-ray excess in the NMSSM preprint, January 2015

Probing a light CP-odd scalar in di-top-associated production at the LHC preprint, January 2015

WIMP dark matter candidates and searches - current status and future prospects text, January 2017

An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV
journal, April 2009

Measurement of Separate Cosmic-Ray Electron and Positron Spectra with the Fermi Large Area Telescope
journal, January 2012

First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV
journal, April 2013

Fermi LAT search for internal bremsstrahlung signatures from dark matter annihilation
journal, July 2012

A tentative gamma-ray line from Dark Matter annihilation at the Fermi Large Area Telescope
journal, August 2012

Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre
journal, September 2012

Dark matter annihilation in the Galactic Center as seen by the Fermi Gamma Ray Space Telescope
journal, March 2011

Detection of a gamma-ray source in the Galactic Center consistent with extended emission from dark matter annihilation and concentrated astrophysical emission
journal, October 2012

Two emission mechanisms in the Fermi Bubbles: A possible signal of annihilating dark matter
journal, September 2013

Bounds on dark matter interpretation of Fermi-LAT GeV excess
journal, November 2014

CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI -LAT DIFFUSE MEASUREMENTS
journal, November 2012

Constraints on the pMSSM from LAT observations of dwarf spheroidal galaxies
journal, April 2012

Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope
journal, December 2011

Higgs portal vector dark matter for GeV scale γ-ray excess from galactic center
journal, September 2014

The windows for kinetically mixed Z′-mediated dark matter and the galactic center gamma ray excess
journal, August 2014

A simplified 2HDM with a scalar dark matter and the galactic center gamma-ray excess
journal, December 2014

Galactic center γ-ray excess in hidden sector DM models with dark gauge symmetries: local Z ₃ symmetry as an example
journal, January 2015

Connection of gamma rays, dark matter, and Higgs boson searches at the LHC
journal, October 2012

Dark Matter with Pseudoscalar-Mediated Interactions Explains the DAMA Signal and the Galactic Center Excess
journal, January 2015

Light dark matter for Fermi-LAT and CDMS observations
journal, May 2014

Extended gamma-ray emission from Coy Dark Matter
journal, May 2014

Supersymmetry without prejudice
journal, February 2009

Massive gluinos
journal, October 1978

U(1)R symmetric supersymmetry
journal, March 1991

Low-energy phenomenology of superstring-inspired E6 models
journal, November 1989

The Next-to-Minimal Supersymmetric Standard Model
journal, November 2010

Light neutralino dark matter: direct/indirect detection and collider searches
journal, August 2014

The new look pMSSM with neutralino and gravitino LSPs
journal, September 2012

DarkSUSY: computing supersymmetric dark matter properties numerically
journal, July 2004

The Next-To-Minimal Supersymmetric Extension of the Standard Model Reviewed
journal, July 2010

NMHDECAY: A Fortran Code for the Higgs Masses, Couplings and Decay Widths in the NMSSM
journal, February 2005

NMHDECAY 2.1: An updated program for sparticle masses, Higgs masses, couplings and decay widths in the NMSSM
journal, August 2006

NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM with GUT scale boundary conditions
journal, August 2007

Phenomenology of the general NMSSM with gauge mediated supersymmetry breaking
journal, May 2008

NMSDECAY: A Fortran code for supersymmetric particle decays in the Next-to-Minimal Supersymmetric Standard Model
journal, March 2012

SDECAY: a Fortran code for the decays of the supersymmetric particles in the MSSM
journal, May 2005

Relic density of dark matter in the next-to-minimal supersymmetric standard model
journal, September 2005

micrOMEGAs 2.0: A program to calculate the relic density of dark matter in a generic model
journal, March 2007

Dark matter direct detection rate in a generic model with micrOMEGAs_2.2
journal, May 2009

Indirect search for dark matter with micrOMEGAs_2.4
journal, March 2011

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

CalcHEP 3.4 for collider physics within and beyond the Standard Model
journal, July 2013

Planck 2013 results. XVI. Cosmological parameters
journal, October 2014

First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility
journal, March 2014

NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM with GUT scale boundary conditions
dataset, January 2019

A taste of dark matter: flavour constraints on pseudoscalar mediators
journal, March 2015

CONFRONTING GALACTIC AND EXTRAGALACTIC γ -RAYS OBSERVED BY FERMI -LAT WITH ANNIHILATING DARK MATTER IN AN INERT HIGGS DOUBLET MODEL
journal, August 2015

WIMP dark matter candidates and searches—current status and future prospects
journal, May 2018

Wavelet-based techniques for the gamma-ray sky
journal, July 2016

Scalar split WIMPs in future direct detection experiments
journal, March 2016

Probing a light CP-odd scalar in di-top-associated production at the LHC
journal, October 2015

The higgsino–singlino sector of the NMSSM: combined constraints from dark matter and the LHC
journal, September 2018

NMSSM explanations of the Galactic center gamma ray excess and promising LHC searches
text, January 2014

Signals of a Light Dark Force in the Galactic Center
text, January 2014

Interpreting the galactic center gamma-ray excess in the NMSSM
preprint, January 2015

Probing a light CP-odd scalar in di-top-associated production at the LHC
preprint, January 2015

WIMP dark matter candidates and searches - current status and future prospects
text, January 2017