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Title: Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data

Abstract

We describe a likelihood analysis using MasterCode of variants of the MSSM in which the soft supersymmetry-breaking parameters are assumed to have universal values at some scale M in below the supersymmet-ric grand unification scale M GUT, as can occur in mirage mediation and other models. In addition to M in, such ‘sub-GUT’ models have the 4 parameters of the CMSSM, namely a common gaugino mass m 1/2, a common soft supersymmetry-breaking scalar mass m 0, a common trilinear mixing parameter A and the ratio of MSSM Higgs vevs tan β, assuming that the Higgs mixing parameter μ> 0. We take into account constraints on strongly- and electroweakly-interacting sparticles from ~ 36/fb of LHC data at 13 TeV and the LUX and 2017 PICO, XENON1T and PandaX-II searches for dark matter scattering, in addition to the previous LHC and dark matter constraints as well as full sets of flavour and electroweak constraints. We find a preference for Min ~ 10 5 to 10 9 GeV, with M in ~ M GUT disfavoured by Δχ 2 ~ 3 due to the BR(B s,d → μ +μ -) constraint. The lower limits on strongly-interacting sparticles are largely determined by LHC searches, and similar to those in the CMSSM. We find a preference for the LSP to be a Bino or Higgsino with m$$\mathbb -0\atop{X1} $$ ~ 1 TeV, with annihilation via heavy Higgs bosons H/A and stop coannihilation, or chargino coannihilation, bringing the cold dark matter density into the cosmological range. We find that spin-independent dark matter scattering is likely to be within reach of the planned LUX-Zeplin and XENONnT experiments. We probe the impact of the (g - 2) μ constraint, finding similar results whether or not it is included.

Authors:
 [1];  [2];  [3];  [4];  [1];  [1];  [5];  [6];  [7];  [8];  [9];  [4];  [4];  [10];  [1];  [2]
  1. Imperial College, London (United Kingdom)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Univ. of Warsaw (Poland)
  4. Univ. of Santiago de Compostela, Santiago de Compostela, Galicia (Spain)
  5. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Antwerp Univ., Wilrijk (Belgium)
  6. Univ. of Melbourne (Australia)
  7. King's College London (United Kingdom); National Inst. of Chemical Physics and Biophysics, Tallinn (Estonia); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  8. Bristol Univ. (United Kingdom)
  9. The Campus of International Excellence (CEI) UAM+CSIC, Madrid (Spain); Instituto de Física Teórica (IFT), Madrid (Spain); Instituto de Física de Cantabria (IFCA), Madrid (Spain)
  10. Univ. of Minnesota, Minneapolis, MN (United States)
Publication Date:
Research Org.:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1510009
Grant/Contract Number:  
SC0011842
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 78; Journal Issue: 2; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Costa, J. C., Bagnaschi, E., Sakurai, K., Borsato, M., Buchmueller, O., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Lucio, M., Santos, D. Martínez, Olive, K. A., Richards, A., and Weiglein, G. Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data. United States: N. p., 2018. Web. doi:10.1140/epjc/s10052-018-5633-3.
Costa, J. C., Bagnaschi, E., Sakurai, K., Borsato, M., Buchmueller, O., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Lucio, M., Santos, D. Martínez, Olive, K. A., Richards, A., & Weiglein, G. Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data. United States. doi:10.1140/epjc/s10052-018-5633-3.
Costa, J. C., Bagnaschi, E., Sakurai, K., Borsato, M., Buchmueller, O., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Lucio, M., Santos, D. Martínez, Olive, K. A., Richards, A., and Weiglein, G. Fri . "Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data". United States. doi:10.1140/epjc/s10052-018-5633-3. https://www.osti.gov/servlets/purl/1510009.
@article{osti_1510009,
title = {Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data},
author = {Costa, J. C. and Bagnaschi, E. and Sakurai, K. and Borsato, M. and Buchmueller, O. and Citron, M. and De Roeck, A. and Dolan, M. J. and Ellis, J. R. and Flächer, H. and Heinemeyer, S. and Lucio, M. and Santos, D. Martínez and Olive, K. A. and Richards, A. and Weiglein, G.},
abstractNote = {We describe a likelihood analysis using MasterCode of variants of the MSSM in which the soft supersymmetry-breaking parameters are assumed to have universal values at some scale Min below the supersymmet-ric grand unification scale MGUT, as can occur in mirage mediation and other models. In addition to Min, such ‘sub-GUT’ models have the 4 parameters of the CMSSM, namely a common gaugino mass m1/2, a common soft supersymmetry-breaking scalar mass m0, a common trilinear mixing parameter A and the ratio of MSSM Higgs vevs tan β, assuming that the Higgs mixing parameter μ> 0. We take into account constraints on strongly- and electroweakly-interacting sparticles from ~ 36/fb of LHC data at 13 TeV and the LUX and 2017 PICO, XENON1T and PandaX-II searches for dark matter scattering, in addition to the previous LHC and dark matter constraints as well as full sets of flavour and electroweak constraints. We find a preference for Min ~ 105 to 109 GeV, with Min ~ MGUT disfavoured by Δχ2 ~ 3 due to the BR(Bs,d → μ+μ-) constraint. The lower limits on strongly-interacting sparticles are largely determined by LHC searches, and similar to those in the CMSSM. We find a preference for the LSP to be a Bino or Higgsino with m$\mathbb -0\atop{X1} $ ~ 1 TeV, with annihilation via heavy Higgs bosons H/A and stop coannihilation, or chargino coannihilation, bringing the cold dark matter density into the cosmological range. We find that spin-independent dark matter scattering is likely to be within reach of the planned LUX-Zeplin and XENONnT experiments. We probe the impact of the (g - 2)μ constraint, finding similar results whether or not it is included.},
doi = {10.1140/epjc/s10052-018-5633-3},
journal = {European Physical Journal. C, Particles and Fields},
issn = {1434-6044},
number = 2,
volume = 78,
place = {United States},
year = {2018},
month = {2}
}

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