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The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model
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The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model
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| dc.contributor.author | Aguilar Saavedra, Juan Antonio | |
| dc.contributor.author | Botella Olcina, Francisco J. | |
| dc.contributor.author | Branco, Gustavo Castelo | |
| dc.contributor.author | Nebot Gómez, Miguel | |
| dc.date.accessioned | 2014-11-06T09:12:01Z | |
| dc.date.available | 2014-11-06T09:12:01Z | |
| dc.date.issued | 2005 | |
| dc.identifier.citation | 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 | |
| dc.identifier.uri | http://hdl.handle.net/10550/39616 | |
| dc.description.abstract | 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. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Nuclear Physics B, 2005, vol. 706, num. 1-2, p. 204-220 | |
| dc.subject | Física | |
| dc.title | The size of X arg(-V-ts V-tb(*) V-cs(*) V-cb) and physics beyond the standard model | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2014-11-06T09:12:01Z | |
| dc.identifier.doi | 10.1016/j.nuclphysb.2004.11.024 | |
| dc.identifier.idgrec | 028187 | |
| dc.rights.accessRights | open access | es_ES |
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