LHC luminosity and energy upgrades confront natural supersymmetry models

Baer, Howard; Barger, Vernon; Gainer, James S.; Sengupta, Dibyashree; Serce, Hasan; Tata, Xerxes

doi:10.1103/PhysRevD.98.075010

Title: LHC luminosity and energy upgrades confront natural supersymmetry models

Abstract

The electroweak fine-tuning measure $Δ_{EW}$ allows for correlated supersymmetry (SUSY) soft terms as are expected in any ultraviolet complete theory. Requiring no less than 3% electroweak fine-tuning implies upper bounds of about 360 GeV on all Higgsinos, while top squarks are lighter than $~ 3 TeV$ and gluinos are bounded by $~ 6 - 9 TeV$ . We examine the reach for SUSY of the planned high luminosity (HL: $3 {ab}^{- 1}$ at 14 TeV) and the proposed high energy (HE: $15 {ab}^{- 1}$ at 27 TeV) upgrades of the LHC via four LHC collider search channels relevant for natural SUSY: 1. gluino pair production followed by gluino decay to third generation (s)quarks, 2. top squark pair production followed by decay to third generation quarks and light Higgsinos, 3. neutral Higgsino pair production with QCD jet radiation (resulting in monojet events with soft dileptons), and 4. wino pair production followed by decay to light Higgsinos leading to same-sign diboson production. We confront our reach results with upper limits on superpartner masses in four natural SUSY models: natural gravity mediation via the 1. two- and 2. three-extra-parameter nonuniversal Higgs models, 3. natural minilandscape models with generalized mirage mediation and 4. natural anomaly mediation We find that while the HL-LHC can probe considerable portions of natural SUSY parameter space in all these models, the HE-LHC will decisively cover the entire natural SUSY parameter space with better than 3% fine-tuning

Authors:: Baer, Howard; Barger, Vernon; Gainer, James S.; Sengupta, Dibyashree; Serce, Hasan; Tata, Xerxes

Publication Date:: Fri Oct 12 00:00:00 EDT 2018

Research Org.:: Univ. of Hawaii, Honolulu, HI (United States); Univ. of Oklahoma, Norman, OK (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1477576

Alternate Identifier(s):: OSTI ID: 1597964

Report Number(s):: arXiv:1808.04844
Journal ID: ISSN 2470-0010; PRVDAQ; 075010

Grant/Contract Number:: SC0010504

Resource Type:: Published Article

Journal Name:: Physical Review. D.

Additional Journal Information:: Journal Name: Physical Review. D. Journal Volume: 98 Journal Issue: 7; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LHC; supersymmetry

Citation Formats


                    Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, and Tata, Xerxes. LHC luminosity and energy upgrades confront natural supersymmetry models.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevD.98.075010.

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                    Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, & Tata, Xerxes. LHC luminosity and energy upgrades confront natural supersymmetry models.  United States.  https://doi.org/10.1103/PhysRevD.98.075010

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                    Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, and Tata, Xerxes. Fri .  
"LHC luminosity and energy upgrades confront natural supersymmetry models".  United States.  https://doi.org/10.1103/PhysRevD.98.075010.

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@article{osti_1477576,

  title        = {LHC luminosity and energy upgrades confront natural supersymmetry models},

  author       = {Baer, Howard and Barger, Vernon and Gainer, James S. and Sengupta, Dibyashree and Serce, Hasan and Tata, Xerxes},

  abstractNote = {The electroweak fine-tuning measure ΔEW allows for correlated supersymmetry (SUSY) soft terms as are expected in any ultraviolet complete theory. Requiring no less than 3% electroweak fine-tuning implies upper bounds of about 360 GeV on all Higgsinos, while top squarks are lighter than ~3TeV and gluinos are bounded by ~6–9TeV. We examine the reach for SUSY of the planned high luminosity (HL: 3ab-1 at 14 TeV) and the proposed high energy (HE: 15ab-1 at 27 TeV) upgrades of the LHC via four LHC collider search channels relevant for natural SUSY: 1. gluino pair production followed by gluino decay to third generation (s)quarks, 2. top squark pair production followed by decay to third generation quarks and light Higgsinos, 3. neutral Higgsino pair production with QCD jet radiation (resulting in monojet events with soft dileptons), and 4. wino pair production followed by decay to light Higgsinos leading to same-sign diboson production. We confront our reach results with upper limits on superpartner masses in four natural SUSY models: natural gravity mediation via the 1. two- and 2. three-extra-parameter nonuniversal Higgs models, 3. natural minilandscape models with generalized mirage mediation and 4. natural anomaly mediation We find that while the HL-LHC can probe considerable portions of natural SUSY parameter space in all these models, the HE-LHC will decisively cover the entire natural SUSY parameter space with better than 3% fine-tuning},

  doi          = {10.1103/PhysRevD.98.075010},

  journal      = {Physical Review. D.},

  number       = 7,

  volume       = 98,

  place        = {United States},

  year         = {Fri Oct 12 00:00:00 EDT 2018},

  month        = {Fri Oct 12 00:00:00 EDT 2018}

}

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DOI: 10.1007/JHEP02(2014)049

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DOI: 10.1140/epjc/s10052-017-5267-x

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Title: LHC luminosity and energy upgrades confront natural supersymmetry models

Abstract

Citation Formats

Implications of non-universality of soft terms in supersyrnmetric grand unified theories journal, February 1995

Supersymmetric Higgs and radiative electroweak breaking journal, November 2007

The heterotic MiniLandscape and the 126 GeV Higgs boson journal, March 2013

Observables in Low-Energy Superstring Models journal, April 1986

Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible? journal, June 2017

Higgs Boson theory and phenomenology journal, January 2003

Renormalization of Supersymmetry Breaking Parameters Revisited journal, February 1984

MadGraph 5: going beyond journal, June 2011

Weak symmetry breaking by radiative corrections in broken supergravity journal, June 1983

Upper bounds on supersymmetric particle masses journal, August 1988

Electroweak symmetry breaking with non-universal scalar soft terms and large tan β solutions journal, January 1995

Combined Measurement of the Higgs Boson Mass in p p Collisions at s = 7 and 8 TeV with the ATLAS and CMS Experiments journal, May 2015

Locally supersymmetric SU(5) grand unification journal, December 1982

Hidden SUSY at the LHC: the light higgsino-world scenario and the role of a lepton collider journal, November 2011

Gluino reach and mass extraction at the LHC in radiatively-driven natural SUSY journal, July 2017

Supersymmetry, naturalness and light higgsinos journal, May 2014

Compressed electroweakino spectra at the LHC journal, March 2014

Electroweak dark matter at future hadron colliders journal, August 2018

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

SU(2)L × U(1) symmetry breaking as a radiative effect of supersymmetry breaking in GUTs journal, April 1982

Gauge hierarchy in a supersymmetric model journal, February 1982

Supersymmetry, naturalness, and signatures at the CERN LHC journal, May 2006

Top-squark in natural SUSY under current LHC run-2 data journal, February 2017

Squark and gluino production cross sections in $$pp$$ p p collisions at $$\sqrt{s} = 13, 14, 33$$ s = 13 , 14 , 33 and $$100$$ 100 TeV journal, December 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

Current experimental bounds on stop mass in natural SUSY journal, October 2013

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

Out of this world supersymmetry breaking journal, September 1999

Monojets and monophotons from light Higgsino pair production at LHC14 journal, March 2014

Direct, indirect and collider detection of neutralino dark matter in SUSY models with non-universal Higgs masses journal, July 2005

Soft supersymmetry breaking in KKLT flux compactification journal, July 2005

Closing up a light stop window in natural SUSY at LHC journal, April 2016

Nonuniversal soft supersymmetry breaking and dark matter journal, September 1997

Radiatively-driven natural supersymmetry at the LHC journal, December 2013

Weak Scale Supersymmetry book, January 2006

Monojet plus soft dilepton signal from light higgsino pair production at LHC14 journal, December 2014

Naturalness, weak scale supersymmetry, and the prospect for the observation of supersymmetry at the Fermilab Tevatron and at the CERN LHC journal, September 1998

Production of gauge-fermions at colliders journal, November 1983

Erratum to: Radiatively-driven natural supersymmetry at the LHC journal, June 2015

A natural SUSY Higgs near 125 GeV journal, April 2012

Dynamical breaking of supersymmetry journal, October 1981

Weak interaction breakdown induced by supergravity journal, January 1983

Supersymmetry reach of Fermilab Tevatron upgrades: The large tan β case journal, September 1998

Phenomenological profile of top squarks from natural supersymmetry at the LHC journal, March 2017

Phenomenology of gluino decays via loops and top-quark Yukawa coupling journal, September 1990

Accessing the core of naturalness, nearly degenerate higgsinos, at the LHC journal, April 2015

Implications of precision electroweak experiments for m t , ρ 0 , sin 2 θ W , and grand unification journal, August 1991

Implications of a 125 GeV Higgs for supersymmetric models journal, February 2012

Radiative natural supersymmetry: Reconciling electroweak fine-tuning and the Higgs boson mass journal, June 2013

A new look at Higgs constraints on stops journal, June 2014

Prospects for Higgs coupling measurements in SUSY with radiatively-driven naturalness journal, August 2015

Mainly axion cold dark matter from natural supersymmetry journal, February 2014

Minimal low-energy supergravity journal, July 1983

How conventional measures overestimate electroweak fine-tuning in supersymmetric theory journal, November 2013

Stability of flux compactifications and the pattern of supersymmetry breaking journal, November 2004

Hunting quasidegenerate Higgsinos journal, April 2014

Reach of the high-energy LHC for gluinos and top squarks in SUSY models with light Higgsinos journal, December 2017

A brief introduction to PYTHIA 8.1 journal, June 2008

Naturalness and superpartner masses or when to give up on weak scale supersymmetry journal, August 1995

Mixed axion/neutralino cold dark matter in supersymmetric models journal, June 2011

Anomaly-mediated SUSY breaking model retrofitted for naturalness journal, July 2018

Supersymmetry and the scale of unification journal, September 1981

Probing the desert using gauge coupling unification journal, May 1991

The locally supersymmetric geometrical hierarchy model journal, October 1983

Aspects of Grand Unified Models with Softly Broken Supersymmetry journal, September 1982

Search for top squark pair production in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using single lepton events journal, October 2017

DELPHES 3: a modular framework for fast simulation of a generic collider experiment journal, February 2014

Higgs and superparticle mass predictions from the landscape journal, March 2018

Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks journal, January 2018

Exploration of the MSSM with non-universal Higgs masses journal, March 2003

Radiative Natural Supersymmetry with a 125 GeV Higgs Boson journal, October 2012

Effective potential and quadratic divergences journal, December 1992

SUSY models under siege: LHC constraints and electroweak fine-tuning journal, June 2014

A mini-landscape of exact MSSM spectra in heterotic orbifolds journal, February 2007

Constraining natural SUSY via the Higgs coupling and the muon anomalous magnetic moment measurements journal, March 2016

Upper bounds on sparticle masses from naturalness or how to disprove weak scale supersymmetry journal, February 2016

Implications of a 125 GeV Higgs scalar for the LHC supersymmetry and neutralino dark matter searches journal, April 2012

Implications of non-universality of soft terms in supersyrnmetric grand unified theories
journal, February 1995

Supersymmetric Higgs and radiative electroweak breaking
journal, November 2007

The heterotic MiniLandscape and the 126 GeV Higgs boson
journal, March 2013

Observables in Low-Energy Superstring Models
journal, April 1986

Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?
journal, June 2017

Higgs Boson theory and phenomenology
journal, January 2003

Renormalization of Supersymmetry Breaking Parameters Revisited
journal, February 1984

MadGraph 5: going beyond
journal, June 2011

Weak symmetry breaking by radiative corrections in broken supergravity
journal, June 1983

Upper bounds on supersymmetric particle masses
journal, August 1988

Electroweak symmetry breaking with non-universal scalar soft terms and large tan β solutions
journal, January 1995

Combined Measurement of the Higgs Boson Mass in $p p$ Collisions at $\sqrt{s} = 7$ and 8 TeV with the ATLAS and CMS Experiments
journal, May 2015

Locally supersymmetric SU(5) grand unification
journal, December 1982

Hidden SUSY at the LHC: the light higgsino-world scenario and the role of a lepton collider
journal, November 2011

Gluino reach and mass extraction at the LHC in radiatively-driven natural SUSY
journal, July 2017

Supersymmetry, naturalness and light higgsinos
journal, May 2014

Compressed electroweakino spectra at the LHC
journal, March 2014

Electroweak dark matter at future hadron colliders
journal, August 2018

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

SU(2)L × U(1) symmetry breaking as a radiative effect of supersymmetry breaking in GUTs
journal, April 1982

Gauge hierarchy in a supersymmetric model
journal, February 1982

Supersymmetry, naturalness, and signatures at the CERN LHC
journal, May 2006

Top-squark in natural SUSY under current LHC run-2 data
journal, February 2017

Squark and gluino production cross sections in $$pp$$ p p collisions at $$\sqrt{s} = 13, 14, 33$$ s = 13 , 14 , 33 and $$100$$ 100 TeV
journal, December 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

Current experimental bounds on stop mass in natural SUSY
journal, October 2013

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

Out of this world supersymmetry breaking
journal, September 1999

Monojets and monophotons from light Higgsino pair production at LHC14
journal, March 2014

Direct, indirect and collider detection of neutralino dark matter in SUSY models with non-universal Higgs masses
journal, July 2005

Soft supersymmetry breaking in KKLT flux compactification
journal, July 2005

Closing up a light stop window in natural SUSY at LHC
journal, April 2016

Nonuniversal soft supersymmetry breaking and dark matter
journal, September 1997

Radiatively-driven natural supersymmetry at the LHC
journal, December 2013

Weak Scale Supersymmetry
book, January 2006

Monojet plus soft dilepton signal from light higgsino pair production at LHC14
journal, December 2014

Naturalness, weak scale supersymmetry, and the prospect for the observation of supersymmetry at the Fermilab Tevatron and at the CERN LHC
journal, September 1998

Production of gauge-fermions at colliders
journal, November 1983

Erratum to: Radiatively-driven natural supersymmetry at the LHC
journal, June 2015

A natural SUSY Higgs near 125 GeV
journal, April 2012

Dynamical breaking of supersymmetry
journal, October 1981

Weak interaction breakdown induced by supergravity
journal, January 1983

Supersymmetry reach of Fermilab Tevatron upgrades: The large $\tan β$ case
journal, September 1998

Phenomenological profile of top squarks from natural supersymmetry at the LHC
journal, March 2017

Phenomenology of gluino decays via loops and top-quark Yukawa coupling
journal, September 1990

Accessing the core of naturalness, nearly degenerate higgsinos, at the LHC
journal, April 2015

Implications of precision electroweak experiments for $m_{t}$ , $ρ_{0}$ , ${{sin}^{2} θ}_{W}$ , and grand unification
journal, August 1991

Implications of a 125 GeV Higgs for supersymmetric models
journal, February 2012

Radiative natural supersymmetry: Reconciling electroweak fine-tuning and the Higgs boson mass
journal, June 2013

A new look at Higgs constraints on stops
journal, June 2014

Prospects for Higgs coupling measurements in SUSY with radiatively-driven naturalness
journal, August 2015

Mainly axion cold dark matter from natural supersymmetry
journal, February 2014

Minimal low-energy supergravity
journal, July 1983

How conventional measures overestimate electroweak fine-tuning in supersymmetric theory
journal, November 2013

Stability of flux compactifications and the pattern of supersymmetry breaking
journal, November 2004

Hunting quasidegenerate Higgsinos
journal, April 2014

Reach of the high-energy LHC for gluinos and top squarks in SUSY models with light Higgsinos
journal, December 2017

A brief introduction to PYTHIA 8.1
journal, June 2008

Naturalness and superpartner masses or when to give up on weak scale supersymmetry
journal, August 1995

Mixed axion/neutralino cold dark matter in supersymmetric models
journal, June 2011

Anomaly-mediated SUSY breaking model retrofitted for naturalness
journal, July 2018

Supersymmetry and the scale of unification
journal, September 1981

Probing the desert using gauge coupling unification
journal, May 1991

The locally supersymmetric geometrical hierarchy model
journal, October 1983

Aspects of Grand Unified Models with Softly Broken Supersymmetry
journal, September 1982

Search for top squark pair production in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using single lepton events
journal, October 2017

DELPHES 3: a modular framework for fast simulation of a generic collider experiment
journal, February 2014

Higgs and superparticle mass predictions from the landscape
journal, March 2018

Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks
journal, January 2018

Exploration of the MSSM with non-universal Higgs masses
journal, March 2003

Radiative Natural Supersymmetry with a 125 GeV Higgs Boson
journal, October 2012

Effective potential and quadratic divergences
journal, December 1992

SUSY models under siege: LHC constraints and electroweak fine-tuning
journal, June 2014

A mini-landscape of exact MSSM spectra in heterotic orbifolds
journal, February 2007

Constraining natural SUSY via the Higgs coupling and the muon anomalous magnetic moment measurements
journal, March 2016

Upper bounds on sparticle masses from naturalness or how to disprove weak scale supersymmetry
journal, February 2016

Implications of a 125 GeV Higgs scalar for the LHC supersymmetry and neutralino dark matter searches
journal, April 2012

Multichannel search for minimal supergravity at pp¯ and $e^{+}$ $e^{-}$ colliders
journal, February 1995

Natural SUSY endures
journal, September 2012

Naturalness constraints in supersymmetric theories with non-universal soft terms
journal, September 1995