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Title: Natural SUSY with a bino- or wino-like LSP

Abstract

In natural SUSY models higgsinos are always light because μ 2 cannot be much larger than M$$2\atop{Z}$$, while squarks and gluinos may be very heavy. Unless gluinos are discovered at LHC13, the commonly assumed unification of gaugino mass parameters will imply correspondingly heavy winos and binos, resulting in a higgsino-like LSP and small inter-higgsino mass splittings. The small visible energy release in higgsino decays makes their pair production difficult to detect at the LHC. Relaxing gaugino mass universality allows for relatively light winos and binos without violating LHC gluino mass bounds and without affecting naturalness. In the case where the bino mass M 1≲ μ, then one obtains a mixed bino-higgsino LSP with instead sizable w 1-z 1 and z 2-z 1 mass gaps. The thermal neutralino abundance can match the measured dark matter density in contrast to models with a higgsino-like LSP where WIMPs (weakly interacting massive particles) are underproduced by factors of 10-15. If instead M 2≲ μ, then one obtains a mixed wino-higgsino LSP with large z 2-z 1 but small w 1-z 1 mass gaps with still an under-abundance of thermally-produced WIMPs. Portions of the light wino parameter space may already be excluded by the IceCubemore » upper bound on the spin-dependent neutralino-nucleon cross section. We discuss dark matter detection in other direct and indirect detection experiments and caution that the bounds from these must be interpreted with care. Finally, we show that LHC13 experiments should be able to probe these non-universal mass scenarios via a variety of channels including multi-lepton + E$$miss\atop{T}$$ events, WZ+ E$$miss\atop{T}$$ events, Wh+ E$$miss\atop{T}$$ events and W± W± + E$$miss\atop{T}$$ events from electroweak chargino and neutralino production.« less

Authors:
 [1];  [2];  [3];  [4];  [4];  [5]
  1. Univ. of Oklahoma, Norman, OK (United States); Univ. of Minnesota, Minneapolis, MN (United States)
  2. Univ. of Wisconsin, Madison, WI (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States). Enrico Fermi Inst.
  4. Univ. of Oklahoma, Norman, OK (United States)
  5. Univ. of Hawaii, Honolulu, HI (United States)
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1598670
Alternate Identifier(s):
OSTI ID: 1179366
Grant/Contract Number:  
SC0010504
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 91; 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

Citation Formats

Baer, Howard, Barger, Vernon, Huang, Peisi, Mickelson, Dan, Padeffke-Kirkland, Maren, and Tata, Xerxes. Natural SUSY with a bino- or wino-like LSP. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.91.075005.
Baer, Howard, Barger, Vernon, Huang, Peisi, Mickelson, Dan, Padeffke-Kirkland, Maren, & Tata, Xerxes. Natural SUSY with a bino- or wino-like LSP. United States. https://doi.org/10.1103/PhysRevD.91.075005
Baer, Howard, Barger, Vernon, Huang, Peisi, Mickelson, Dan, Padeffke-Kirkland, Maren, and Tata, Xerxes. Wed . "Natural SUSY with a bino- or wino-like LSP". United States. https://doi.org/10.1103/PhysRevD.91.075005. https://www.osti.gov/servlets/purl/1598670.
@article{osti_1598670,
title = {Natural SUSY with a bino- or wino-like LSP},
author = {Baer, Howard and Barger, Vernon and Huang, Peisi and Mickelson, Dan and Padeffke-Kirkland, Maren and Tata, Xerxes},
abstractNote = {In natural SUSY models higgsinos are always light because μ2 cannot be much larger than M$2\atop{Z}$, while squarks and gluinos may be very heavy. Unless gluinos are discovered at LHC13, the commonly assumed unification of gaugino mass parameters will imply correspondingly heavy winos and binos, resulting in a higgsino-like LSP and small inter-higgsino mass splittings. The small visible energy release in higgsino decays makes their pair production difficult to detect at the LHC. Relaxing gaugino mass universality allows for relatively light winos and binos without violating LHC gluino mass bounds and without affecting naturalness. In the case where the bino mass M1≲ μ, then one obtains a mixed bino-higgsino LSP with instead sizable w1-z1 and z2-z1 mass gaps. The thermal neutralino abundance can match the measured dark matter density in contrast to models with a higgsino-like LSP where WIMPs (weakly interacting massive particles) are underproduced by factors of 10-15. If instead M2≲ μ, then one obtains a mixed wino-higgsino LSP with large z2-z1 but small w1-z1 mass gaps with still an under-abundance of thermally-produced WIMPs. Portions of the light wino parameter space may already be excluded by the IceCube upper bound on the spin-dependent neutralino-nucleon cross section. We discuss dark matter detection in other direct and indirect detection experiments and caution that the bounds from these must be interpreted with care. Finally, we show that LHC13 experiments should be able to probe these non-universal mass scenarios via a variety of channels including multi-lepton + E$miss\atop{T}$ events, WZ+ E$miss\atop{T}$ events, Wh+ E$miss\atop{T}$ events and W± W± + E$miss\atop{T}$ events from electroweak chargino and neutralino production.},
doi = {10.1103/PhysRevD.91.075005},
url = {https://www.osti.gov/biblio/1598670}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 7,
volume = 91,
place = {United States},
year = {2015},
month = {4}
}

Journal Article:

Citation Metrics:
Cited by: 20 works
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Works referenced in this record:

Future Imperfect
journal, February 2014


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


Observables in Low-Energy Superstring Models
journal, April 1986


Upper bounds on supersymmetric particle masses
journal, August 1988


A solution to the supersymmetric fine-tuning problem within the MSSM
journal, December 2005


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


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


Soft breaking of supersymmetry
journal, January 1982


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


Supersymmetry, naturalness and light higgsinos
journal, May 2014


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


Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at $ \sqrt{s} $ = 8 TeV
journal, June 2014


Naturalness implies intra-generational degeneracy for decoupled squarks and sleptons
journal, February 2014


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


Probing light higgsinos in natural SUSY from monojet signals at the LHC
journal, February 2014


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


Hunting quasidegenerate Higgsinos
journal, April 2014


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


CP Conservation in the Presence of Pseudoparticles
journal, June 1977


A New Light Boson?
journal, January 1978


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


Neutralino dark matter from heavy axino decay
journal, June 2008


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


Gaugino masses and grand unification
journal, June 1985


Reach of Fermilab Tevatron upgrades for SU(5) supergravity models with nonuniversal gaugino masses
journal, April 2000


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


Nonuniversal Gaugino Masses and Natural Supersymmetry
journal, May 2013


Weak Scale Supersymmetry
book, January 2006


Neutralino relic density in minimal supergravity with co-annihilations
journal, March 2002


Estimate of B ( B ¯ X s γ ) at O ( α s 2 )
journal, January 2007


Exclusive measurements of b s γ transition rate and photon energy spectrum
journal, September 2012


Measurement of the B ¯ X s γ branching fraction with a sum of exclusive decays
journal, March 2015


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


Dark Matter Results from 225 Live Days of XENON100 Data
journal, November 2012


Dark matter production in the early Universe: Beyond the thermal WIMP paradigm
journal, February 2015


Search for Dark Matter Annihilations in the Sun with the 79-String IceCube Detector
journal, March 2013


Same-Sign Diboson Signature from Supersymmetry Models with Light Higgsinos at the LHC
journal, April 2013


Experimental signals for supersymmetric decays of the W and Z boxons
journal, October 1983


W decay in supergravity guts
journal, October 1983


Multilepton signals from W± and Z0 decays to gauginos at p colliders
journal, May 1985


Gauginos as a signal for supersymmetry at pp¯ colliders
journal, March 1987


Supersymmetric Signals at the Tevatron
journal, May 1987


Production and leptonic decays of charginos and neutralinos in hadronic collisions
journal, December 1991


Aspects of chargino-neutralino production at the Fermilab Tevatron collider
journal, December 1993


Supersymmetry dileptons and trileptons at the Fermilab Tevatron
journal, July 1995


Trilepton signal of minimal supergravity at the Tevatron including τ-lepton contributions
journal, August 1998


Trilepton signature of minimal supergravity at the upgraded Fermilab Tevatron
journal, November 1999


Trilepton signal for supersymmetry at the Fermilab Tevatron reexamined
journal, April 2000


New backgrounds in trilepton, dilepton and dilepton plus tau jet SUSY signals at the tevatron
journal, November 1999


Trilepton signal of grand unified models at the Tevatron
journal, February 2000


Addressing the multi-channel inverse problem at high energy colliders: a model-independent approach to the search for new physics with trileptons
journal, June 2012


Trileptons from chargino-neutralino production at the CERN Large Hadron Collider
journal, October 1994


Signals for minimal supergravity at the CERN Large Hadron Collider. II. Multilepton channels
journal, June 1996


Model independent approach to focus point supersymmetry: from dark matter to collider searches
journal, October 2005


Nonuniversal gaugino and scalar masses, hadronically quiet trileptons, and the Large Hadron Collider
journal, December 2008


WZ plus missing-E T signal from gaugino pair production at LHC7
journal, March 2012


Electroweakinos in the light of the Higgs boson
journal, December 2013


Electroweakino constraints from LHC data
journal, December 2014


W h plus missing- E T signature from gaugino pair production at the LHC
journal, March 2012


Physics at a Higgsino factory
journal, June 2014


Precision study of supersymmetry at future linear e + e colliders
journal, April 1995


Supersymmetry studies at future linear e + e colliders
journal, December 1996


A simple solution to the strong CP problem with a harmless axion
journal, August 1981


Natural little hierarchy for SUSY from radiative breaking of the Peccei-Quinn symmetry
journal, January 2015


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


Direct and indirect detection of higgsino-like WIMPs: Concluding the story of electroweak naturalness
journal, October 2013


Direct detection of dark matter in supersymmetric models
journal, September 2003


Prospects and blind spots for neutralino dark matter
journal, May 2013


Blind spots for neutralino dark matter in the MSSM with an intermediate m A
journal, July 2014


Phenomenological consequences of supersymmetry with anomaly induced masses
journal, October 1999


Probing Dark Matter at the LHC Using Vector Boson Fusion Processes
journal, August 2013


Wino cold dark matter from anomaly mediated SUSY breaking
journal, March 2000


Nonthermal “WIMP miracle”
journal, October 2009


Successful supersymmetric dark matter with thermal over/under-abundance from late decay of a visible sector scalar
journal, April 2013


Exploring the BWCA (Bino-Wino co-annihilation) scenario for neutralino dark matter
journal, December 2005


Tackling light higgsinos at the ILC
journal, December 2013


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


Reconstructing the chargino system at $e^+e^-$ linear colliders
journal, June 2000


Analysis of the neutralino system in supersymmetric theories
journal, December 2001


    Works referencing / citing this record:

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


    Towards the final word on neutralino dark matter
    journal, March 2016


    Multichannel assault on natural supersymmetry at the high luminosity LHC
    journal, August 2016


    Aspects of the same-sign diboson signature from wino pair production with light higgsinos at the high luminosity LHC
    journal, February 2018