TY - JOUR
T1 - MFV reductions of MSSM parameter space
AU - AbdusSalam, S. S.
AU - Burgess, C. P.
AU - Quevedo, F.
N1 - Publisher Copyright:
© 2015, The Author(s).
PY - 2015/2
Y1 - 2015/2
N2 - The 100+ free parameters of the minimal supersymmetric standard model (MSSM) make it computationally difficult to compare systematically with data, motivating the study of specific parameter reductions such as the cMSSM and pMSSM. Here we instead study the reductions of parameter space implied by using minimal flavour violation (MFV) to organise the R-parity conserving MSSM, with a view towards systematically building in constraints on flavour-violating physics. Within this framework the space of parameters is reduced by expanding soft supersymmetry-breaking terms in powers of the Cabibbo angle, leading to a 24-, 30- or 42-parameter framework (which we call MSSM-24, MSSM-30, and MSSM-42 respectively), depending on the order kept in the expansion. We provide a Bayesian global fit to data of the MSSM-30 parameter set to show that this is manageable with current tools. We compare the MFV reductions to the 19-parameter pMSSM choice and show that the pMSSM is not contained as a subset. The MSSM-30 analysis favours a relatively lighter TeV-scale pseudoscalar Higgs boson and tan β ∼ 10 with multi-TeV sparticles.
AB - The 100+ free parameters of the minimal supersymmetric standard model (MSSM) make it computationally difficult to compare systematically with data, motivating the study of specific parameter reductions such as the cMSSM and pMSSM. Here we instead study the reductions of parameter space implied by using minimal flavour violation (MFV) to organise the R-parity conserving MSSM, with a view towards systematically building in constraints on flavour-violating physics. Within this framework the space of parameters is reduced by expanding soft supersymmetry-breaking terms in powers of the Cabibbo angle, leading to a 24-, 30- or 42-parameter framework (which we call MSSM-24, MSSM-30, and MSSM-42 respectively), depending on the order kept in the expansion. We provide a Bayesian global fit to data of the MSSM-30 parameter set to show that this is manageable with current tools. We compare the MFV reductions to the 19-parameter pMSSM choice and show that the pMSSM is not contained as a subset. The MSSM-30 analysis favours a relatively lighter TeV-scale pseudoscalar Higgs boson and tan β ∼ 10 with multi-TeV sparticles.
KW - Supersymmetry Phenomenology
UR - http://www.scopus.com/inward/record.url?scp=84922825697&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922825697&partnerID=8YFLogxK
U2 - 10.1007/JHEP02(2015)073
DO - 10.1007/JHEP02(2015)073
M3 - Article
AN - SCOPUS:84922825697
SN - 1126-6708
VL - 2015
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 2
M1 - 73
ER -