The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model
NAGIOS: RODERIC FUNCIONANDO

The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model

DSpace Repository

The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model

Show full item record

View       (280.5Kb)

    
Aguilar Saavedra, Juan Antonio; Botella Olcina, Francisco J. Perfil; Branco, Gustavo Castelo; Nebot Gómez, Miguel
This document is a artículoDate2005

Este documento está disponible también en : http://hdl.handle.net/10550/39616
We analyse the allowed range of values of chi, both in the Standard Model and in models with New Physics, pointing out that a relatively large value of chi, e.g. of order lambda, is only possible in models where the unitarity of the 3x3 Cabibbo-Kobayashi-Maskawa matrix is violated through the introduction of extra Q=2/3 quarks. We study the interesting case where the extra quark is an isosinglet, determining the allowed range for chi and the effect of a large chi on various low-energy observables, such as CP asymmetries in B meson decays. We also discuss the correlated effects which would be observable at high energy colliders, like decays t -> cZ, modifications of the cross section and forward-backward asymmetry in e+ e- -> ttbar and the direct production of a new quark.

    Aguilar Saavedra, Juan Antonio Botella Olcina, Francisco J. Branco, Gustavo Castelo Nebot Gómez, Miguel 2005 The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model Nuclear Physics B 706 1-2 204 220
http://dx.doi.org/10.1016/j.nuclphysb.2004.11.024

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search

Browse

Statistics