{"id":144670,"date":"1993-01-01T00:00:00","date_gmt":"1993-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/tau-polarization-from-angular-correlations\/"},"modified":"1993-01-01T00:00:00","modified_gmt":"1993-01-01T00:00:00","slug":"tau-polarization-from-angular-correlations","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/tau-polarization-from-angular-correlations\/","title":{"rendered":"Tau polarization from angular correlations"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ricard Alemany Pantebre <\/strong><\/h2>\n<p>Un nuevo metodo es presentado para medir los acoplamientos de los electrones y taus en las corrientes debiles neutras a partir de las distribuciones de acolinearidad de las desintegraciones de parejas de taus en los sucesos zo &#8211;  t+t-. La extraccion de estos acoplamientos a partir de diferentes observables que presentan interes es analizada en los 11.2 pb-1 de datos recogidos entre los a\u00f1os 1990 y 1991 por el detector aleph en la resonancia del zo. A partir de la medida de la distribucion de acolinearidad de la seccion eficaz y de su asimetria, el parametro a = 2gvga\/(gv2+g2a) es obtenido para electrones y taus. Los valores ae = 0.130+-0.063 (estadistico)+-0.002 (sistematico) y at = 0.162+-0.052 (estadistico) +- 0.014 (sistematico) han sido medidos mostrando consistencia con la hipotesis de universalidad de electron-tau. Con esta hipotesis, el valor ae-t = 0.148 +- 0.035 (estadistico) +- 0.009 (sistematico) es obtenido. El correspondiente valor de sin2 oweff = 0.2314 +- 0.0046 es derivado.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Tau polarization from angular correlations<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Tau polarization from angular correlations <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ricard Alemany Pantebre <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1993<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Enrique Fernandez Sanchez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Ramon Pascual <\/li>\n<li>Andre Rouge (vocal)<\/li>\n<li>Fernando Barreiro Alonso (vocal)<\/li>\n<li>Manuel Delfino Reznicek (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ricard Alemany Pantebre Un nuevo metodo es presentado para medir los acoplamientos de los electrones y taus [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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