<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2004000300006</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Decay t &#8594; bWZ within the context of the left-right mirror model]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández de Córdoba]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gaitán Lozano]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Galeana]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Rebolledo]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Politécnica de Valencia Departamento de Matemática Aplicada ]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>España</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Centro de Investigaciones Teóricas ]]></institution>
<addr-line><![CDATA[Cuautitlán Estado de México]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Instituto Politécnico Nacional Escuela Superior de Física y Matemáticas Departamento de Física]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<volume>50</volume>
<numero>3</numero>
<fpage>239</fpage>
<lpage>243</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2004000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2004000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2004000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[In this paper the left-right mirror model is applied to the decay t &#8594; bW Z, according to the Feynman rules given by the model. We write the corresponding width in compact form in terms of the Standard Model width by assuming the contribution to the WZW vertex being of the same order of magnitude as that of the tZt and bZb vertices. The width has to be compared with recent experimental data in order to get preliminary values for the parameters of the model, since these quantities have not been measured yet. With the appropriate rules given by the model we can deal with other related decays and improve results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este artículo se aplica el modelo izquierdo-derecho especular al decaimiento t &#8594; bW Z, siguiendo las reglas de Feynman proporcionadas por el modelo. Escribimos la anchura correspondiente en forma compacta en términos de la del Modelo Estándar suponiendo que la contribución al vértice WZW es del mismo orden de magnitud que la de los vértices tZt y bZb. La anchura debe de compararse con datos experimentales recientes para obtener valores preliminares de los parámetros del modelo, ya que estas cantidades no han sido medidas aún. Con las reglas apropiadas que da el modelo podemos tratar otros decaimientos del mismo tipo y mejorar resultados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Left-right mirror]]></kwd>
<kwd lng="en"><![CDATA[top quark]]></kwd>
<kwd lng="es"><![CDATA[Modelo izquierdo-derecho especular]]></kwd>
<kwd lng="es"><![CDATA[quark top]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><b><font face="verdana" size="4">Decay t &#8594; <i>bWZ</i> within the context of the left&#45;right mirror model</font></b></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>P. Fern&aacute;ndez de C&oacute;rdoba<sup>a</sup>, R. Gait&aacute;n Lozano<sup>b</sup>*, A. Hern&aacute;ndez&#45;Galeana<sup>c</sup>** and J.M. Rivera&#45;Rebolledo<sup>c</sup>***</b></font></p>      <p align="justify"><b><font face="verdana" size="2">&nbsp;</font></b></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>a</sup> Departamento de Matem&aacute;tica Aplicada, Universidad Polit&eacute;cnica de Valencia, Valencia, Spain.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>b</sup> Centro de Investigaciones Te&oacute;ricas, Facultad de Estudios Superiores, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apartado Postal 142, Cuautitl&aacute;n&#45;Izcalli, Estado de M&eacute;xico, 54700, M&eacute;xico.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>c</sup> Departamento de F&iacute;sica, Escuela Superior de F&iacute;sica y Matem&aacute;ticas, Instituto Polit&eacute;cnico Nacional, U.P. Adolfo L&oacute;pez Mateos, 07738 M&eacute;xico, D.F., M&eacute;xico.</i></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Recibido el 12 de febrero de 2003;    <br> 	Aceptado el 28 de noviembre de 2003.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">In this paper the left&#45;right mirror model is applied to the decay <i>t</i> &#8594; <i>bW Z,</i> according to the Feynman rules given by the model. We write the corresponding width in compact form in terms of the Standard Model width by assuming the contribution to the <i>WZW</i> vertex being of the same order of magnitude as that of the <i>tZt</i> and <i>bZb</i> vertices. The width has to be compared with recent experimental data in order to get preliminary values for the parameters of the model, since these quantities have not been measured yet. With the appropriate rules given by the model we can deal with other related decays and improve results.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Left&#45;right mirror; top quark.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">En este art&iacute;culo se aplica el modelo izquierdo&#45;derecho especular al decaimiento <i>t</i> &#8594; <i>bW Z</i>, siguiendo las reglas de Feynman proporcionadas por el modelo. Escribimos la anchura correspondiente en forma compacta en t&eacute;rminos de la del Modelo Est&aacute;ndar suponiendo que la contribuci&oacute;n al v&eacute;rtice <i>WZW</i> es del mismo orden de magnitud que la de los v&eacute;rtices <i>tZt</i> y bZb. La anchura debe de compararse con datos experimentales recientes para obtener valores preliminares de los par&aacute;metros del modelo, ya que estas cantidades no han sido medidas a&uacute;n. Con las reglas apropiadas que da el modelo podemos tratar otros decaimientos del mismo tipo y mejorar resultados.</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Descriptores:</b> Modelo izquierdo&#45;derecho especular; quark top.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">PACS: 12.60.Cn; 14.65.Ha</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v50n3/v50n3a6.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <p align="justify"><font face="verdana" size="2">* On sabbatic at CINVESTAV&#45;IPN.</font></p>  	    <p align="justify"><font face="verdana" size="2">** With support from COFAA, EDI and SNI.</font></p>  	    <p align="justify"><font face="verdana" size="2">*** With support from COFAA, EDD and SNI.</font></p>  	    ]]></body>
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