<?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>S0035-001X2006001000015</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Electromagnetic form factors]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De Sanctis]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giannini]]></surname>
<given-names><![CDATA[M.M.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santopinto]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vassallo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,INFN  ]]></institution>
<addr-line><![CDATA[Roma ]]></addr-line>
<country>Italy</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universita di Genova  ]]></institution>
<addr-line><![CDATA[Genova ]]></addr-line>
<country>Italy</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>11</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>11</month>
<year>2006</year>
</pub-date>
<volume>52</volume>
<fpage>77</fpage>
<lpage>80</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2006001000015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2006001000015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2006001000015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The relativized hypercentral Constituent Quark Model is used for the calculation of the elastic electromagnetic form factors of the nucleon. The results are compared with the recent measurements at Jlab.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se emplea una version relativista del modelo hipercentral de cuarks constituyentes para estudiar los factores de forma electromagnéticos del nucleón. Se comparan los resultados con los datos experimentales recién obtenidos en el Laboratorio Jefferson.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Relativistic quark model]]></kwd>
<kwd lng="en"><![CDATA[electromagnetic form factors]]></kwd>
<kwd lng="es"><![CDATA[Modelo relativista de cuarks]]></kwd>
<kwd lng="es"><![CDATA[factores de forma electromagnéticos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Electromagnetic form factors</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>M. De Sanctis&ordf;, M.M. Giannini <sup>b</sup>, E. Santopinto<sup>b</sup>*, and A. Vassallo<sup>b</sup></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i> &ordf; INFN, Sezione di Roma 1, Piazzale Aldo Moro, Roma, Italy, Universidad Nacional de Colombia, Bogot&aacute;, Colombia </i></font></p>     <p align="justify"><font face="verdana" size="2"><sup>b</sup> <i>INFN and Universita di Genova, via Dodecaneso 33, 16146 Genova, Italy.</i></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">* Corresponding author;     <br>   e&#150;mail: <a href="mailto:santopin@ge.infn.it" target="_blank">santopin@ge.infn.it</a>.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Recibido el 2 de febrero de 2006    <br> Aceptado el 31 de mayo de 2006</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">The relativized hypercentral Constituent Quark Model is used for the calculation of the elastic electromagnetic form factors of the nucleon. The results are compared with the recent measurements at Jlab.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Relativistic quark model; electromagnetic form factors.</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">Se emplea una version relativista del modelo hipercentral de cuarks constituyentes para estudiar los factores de forma electromagn&eacute;ticos del nucle&oacute;n. Se comparan los resultados con los datos experimentales reci&eacute;n obtenidos en el Laboratorio Jefferson.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Modelo relativista de cuarks; factores de forma electromagn&eacute;ticos.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font size="2" face="verdana">PACS: 12.39.Ki; 13.40.Gp</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/v52s4/v52s4a15.pdf">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>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. M.K. Jones <i>etal., Phys. Rev. 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