Imperial College London
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ProfessorOliverBuchmueller

Faculty of Natural Sciences, Department of Physics

Professor of Physics
 
 
 
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Contact

 

o.buchmueller

 
 
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Location

 

504Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Costa:2018:epjc/s10052-018-5633-3,
author = {Costa, JC and Bagnaschi, E and Sakurai, K and Borsato, M and Buchmueller, O and Citron, M and De, Roeck A and Dolan, MJ and Ellis, JR and Flacher, H and Heinemeyer, S and Lucio, M and Santos, DM and Olive, KA and Richards, A and Weiglein, G},
doi = {epjc/s10052-018-5633-3},
journal = {European Physical Journal C: Particles and Fields},
title = {Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data},
url = {http://dx.doi.org/10.1140/epjc/s10052-018-5633-3},
volume = {78},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - 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 supersymmetric 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   tanβ , 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   109GeV , 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   mχ~01∼1TeV , 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.
AU  - Costa,JC
AU  - Bagnaschi,E
AU  - Sakurai,K
AU  - Borsato,M
AU  - Buchmueller,O
AU  - Citron,M
AU  - De,Roeck A
AU  - Dolan,MJ
AU  - Ellis,JR
AU  - Flacher,H
AU  - Heinemeyer,S
AU  - Lucio,M
AU  - Santos,DM
AU  - Olive,KA
AU  - Richards,A
AU  - Weiglein,G
DO  - epjc/s10052-018-5633-3
PY  - 2018///
SN  - 1434-6044
TI  - Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data
T2  - European Physical Journal C: Particles and Fields
UR  - http://dx.doi.org/10.1140/epjc/s10052-018-5633-3
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000426484200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/58060
VL  - 78
ER  -
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