Indirect probes of the MSSM after the Higgs discovery

Abstract

Abstract:We study the minimal supersymmetric standard model (MSSM) with minimal flavor violation (MFV), imposing constraints from flavor physics observables and MSSM Higgs searches, in light of the recent discovery of a 125 GeV Higgs boson by ATLAS and CMS. We analyze the electroweak vacuum stability conditions to further restrict the MSSM parameter space. In addition, a connection to ultraviolet physics is shown via an implementation of renormalization group running, which determines the TeV-scale spectrum from a small set of minimal supergravity parameters. Finally, we investigate the impact from dark matter direct detection searches. Our work highlights the complementarity of collider, flavor and dark matter probes in exploring the MSSM, and shows that even in a MFV framework, flavor observables constrain the MSSM parameter space well beyond the current reach of direct SUSY particle searches.

An explicit Z ′-boson explanation of the B → K ∗ μ + μ − anomaly

“…[11]) the solution (1.1) should originate from new flavour dynamics that induces a large destructive contribution to the semileptonic vector operator, while leaving the electromagnetic dipole and the semi-leptonic axial-vector operator essentially SM-like. A glimpse at the extensive literature on quark-flavour physics readily shows that the pattern seen in (1.1) is highly non-standard, and that the usual suspects -such as the minimal supersymmetric SM [12,13], warped extra dimension scenarios [14,15] or models with partial compositeness [16,17] to just name a few -cannot accommodate the observed deviations (this point has also been stressed in [8,9]). An apparent though ad hoc way to obtain (1.1) is to postulate the existence of a Z boson with mass in the TeV range and specific couplings to fermions [7]: the new neutral gauge boson should couple only to the left-handedsb current and proportionally to the product V * ts V tb of Cabibbo-KobayashiMaskawa (CKM) matrix elements so that excessive CP-violating contributions to B s -B s mixing are avoided; the Z boson should furthermore couple to left-handed and righthanded muons with close to equal strength, since the B → K * µ + µ − data seem to prefer a vector rather than an axial-vector coupling to theμµ current.…”

Prospects and blind spots for neutralino dark matter

“…Destructive interference between light and heavy Higgs exchange may also produce cancellations in the SI cross-section [50], but these are outside the scope of this work. We consider interference between Higgs and squark exchange in section 5.4.…”

Analysis of the TeV-scale mirage mediation with heavy superparticles

“…Then, we can evade the strong bounds from flavor physics. It is known that the stringent bound on this kind of model comes from the rare B meson decays: B → X s γ [66][67][68] and B s → µ + µ − [69,70]. If there is only one extra Higgs doublet that couples to the right-handed down-type quarks as in the type-II 2HDM, there is an one-loop correction involving charged Higgs which does not depend on tan β.…”