Bounds on quark mass matrices elements due to measured properties of the mixing matrix and present values of the quark masses

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dc.creatorChaturvedi, S.
dc.creatorGupta, V.
dc.creatorSanchez-Colon, G.
dc.date2007-04-21
dc.date2008-02-22
dc.date.accessioned2026-07-07T11:41:02Z
dc.date.available2026-07-07T11:41:02Z
dc.descriptionWe obtain constraints on possible structures of mass matrices in the quark sector by using as experimental restrictions the determined values of the quark masses at the $M_Z$ energy scale, the magnitudes of the quark mixing matrix elements $V_{\rm ud}$, $V_{\rm us}$, $V_{\rm cd}$, and $V_{\rm cs}$, and the Jarlskog invariant $J(V)$. Different cases of specific mass matrices are examined in detail. The quality of the fits for the Fritzsch and Stech type mass matrices is about the same with $χ^2/{\rm dof}=4.23/3=1.41$ and $χ^2/{\rm dof}=9.10/4=2.28$, respectively. The fit for a simple generalization (one extra parameter) of the Fritzsch type matrices, in the physical basis, is much better with $χ^2/{\rm dof}=1.89/4=0.47$. For comparison we also include the results using the quark masses at the 2 GeV energy scale. The fits obtained at this energy scale are similar to that at $M_Z$ energy scale, implying that our results are unaffected by the evolution of the quark masses from 2 to 91 GeV.
dc.descriptionEvolution effects included
dc.identifierhttps://arxiv.org/abs/0704.2851
dc.identifierhttp://arxiv.org/abs/0704.2851
dc.identifierInt.J.Mod.Phys.A23:1729-1746,2008
dc.identifierdoi:10.1142/S0217751X0803975X
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200396
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBounds on quark mass matrices elements due to measured properties of the mixing matrix and present values of the quark masses
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