RT Journal Article
T1 Effects of sfermion mixing induced by RGE running in the minimal flavor violating CMSSM
A1 Gómez Santamaría, Mario Emilio
A1 Heinemeyer, S.
A1 Rehman, M.
AB Within the Constrained Minimal SupersymmetricStandard Model (CMSSM) with Minimal Flavor Violation(MFV) for scalar quarks, we study numerically theeffects of intergenerational squark mixing on B-physicsobservables, electroweak precision observables (EWPO),and the Higgs-boson mass predictions. In models with universalsoft terms at theGUTscale, squarkmixing is generatedthrough the Renormalization Group Equations (RGEs) runningfrom theGUTscale to the electroweak scale due to presenceof non-diagonal Yukawa matrices in the RGEs, e.g. dueto the CKM matrix. Our numerical analysis is based on thecode Spheno for the RGE running and full one-loop calculations,supplemented by further higher-order corrections, atthe electroweak scale of the precision observables as includedin the code FeynHiggs. Taking the CMSSM as a concrete“realistic” example, we find that the B-physics observablesas well as the Higgs mass predictions do not receive sizablecorrections. On the other hand, in our numerical analysis weobserve that the EWPOsuch as theW boson mass can receiverelevant corrections. Such contributions could in principle beused to place new bounds on the CMSSM parameter space.We extend our numerical analysis to the CMSSM extendedwith a mechanism to explain neutrino masses (CMSSMseesawI), which induces flavor violation in the scalar leptonsector. The effects of slepton mixing on the analyzed observablesare found to be, in general, smaller than those of squarkmixing, but in our numerical analysis reach the level of thecurrent experimental uncertainty for the EWPO.
PB SpringerOpen
SN 1434-6044
YR 2015
FD 2015-09
LK http://hdl.handle.net/10272/18367
UL http://hdl.handle.net/10272/18367
LA eng
NO Gómez Santamaría, M. E., Heinemeyer, S., & Rehman, M. (2015). Effects of sfermion mixing induced by RGE running in the minimal flavor violating CMSSM. The European Physical Journal C, 75(9). DOI:  https://doi.org/10.1140/epjc/s10052-015-3654-8
NO The work of S.H. and M.R. was partially supported by CICYT (grant FPA 2013-40715-P). M.G., S.H. and M.R. were supported by the Spanish MICINN's Consolider-Ingenio 2010 Programme under grant MultiDark CSD2009-00064. M.E.G. acknowledges further support from the MICINN project FPA2011-23781.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026