{"id":112810,"date":"2018-03-11T10:39:58","date_gmt":"2018-03-11T10:39:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/teoria-quiral-de-perturbaciones-con-bariones-en-sus-formas-manifiestamente-covariantes-y-el-estudio-de-la-dinamica-n-sobre-la-resonancia-y-2175\/"},"modified":"2018-03-11T10:39:58","modified_gmt":"2018-03-11T10:39:58","slug":"teoria-quiral-de-perturbaciones-con-bariones-en-sus-formas-manifiestamente-covariantes-y-el-estudio-de-la-dinamica-n-sobre-la-resonancia-y-2175","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/teoria-quiral-de-perturbaciones-con-bariones-en-sus-formas-manifiestamente-covariantes-y-el-estudio-de-la-dinamica-n-sobre-la-resonancia-y-2175\/","title":{"rendered":"Teor\u00eda quiral de perturbaciones con bariones en sus formas manifiestamente covariantes y el estudio de la din\u00e1mica   &#960;n&#038;   sobre la resonancia y (2175)."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Manuel Alarc\u00f3n Soriano <\/strong><\/h2>\n<p>En esta tesis doctoral se ha investigado la dispersi\u00f3n pi\u00f3n-nucle\u00f3n en diferentes formalismos covariantes de la teor\u00eda quiral de perturbaciones (chpt). Hemos comprobado que, en el m\u00e1s utilizado (denominado regularizaci\u00f3n infrarroja) las propiedades anal\u00edticas de las amplitudes se modifican de forma que dan lugar a algunos resultados dif\u00edciles de conciliar con la fenomenolog\u00eda existente.   el otro formalismo (denominado regularizaci\u00f3n en la capa m\u00e1sica), logra mantener las propiedades anal\u00edticas de un formalismo covariante y permite, una vez la contribuci\u00f3n de la resonancia ?(1232) se incluye expl\u00edcitamente, extraer, para importantes magnitudes, valores perfectamente compatibles con diferentes determinaciones independientes. Este resultado extiende la validez de chpt con bariones hasta regiones donde se cre\u00eda que la serie quiral no converg\u00eda.   adem\u00e1s, tambi\u00e9n se ha realizado un estudio fenomenol\u00f3gico de la amplitud de dispersi\u00f3n ?(1020)f0(980) cerca del umbral y naturaleza de la resonancia y(2175), asi como la posible existencia de una compa\u00f1era isovectorial de \u00e9sta.  in this thesis we have investigated the pion-nucleon scattering within the different covariant formalism of chiral perturbation theory (chpt). He have found that in the most used one (called infrared regularization)  the analytical properties of the amplitudes are modified giving rise to some results that are incompatible with the established phenomenology. However, the other formalism (called extended-on-mass-shell), keeps the analytical properties of a covariant formalism and achieves the best convergence. Once the ?(1232) is included explicitly, we are able to extract, for important quantities, values that are perfectly compatible with independent phenomenology. This result extend the validity of chpt with baryons up to regions where the chiral series was expected to fail.  on the other hand, we have performed a phenomenological study of the ?(1020)f0(980) scattering near threshold and studied the nature of the y(2175) resonance, as well as the possible existence of an isovector companion of the latter.  listado de t\u00e9rminos tesauro:   220000 fisica (physics)  220700 fisica atomica y nuclear (atomic and nuclear physics)  220807 fisica de particulas (particle physics)  221200 fisica teorica (theoretical phyisics)  c\u00f3digos de clasificaci\u00f3n unesco:  2208.07 f\u00edsica de part\u00edculas (particle physics) 2212.08 hadrones (hadrons) 2212.10 masas (masses) 2212.12 teor\u00eda cu\u00e1ntica de campos (quantum field theory)<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Teor\u00eda quiral de perturbaciones con bariones en sus formas manifiestamente covariantes y el estudio de la din\u00e1mica   &#960;n&#038;   sobre la resonancia y (2175).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Teor\u00eda quiral de perturbaciones con bariones en sus formas manifiestamente covariantes y el estudio de la din\u00e1mica   &#960;n&#038;   sobre la resonancia y (2175). <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Manuel Alarc\u00f3n Soriano <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/06\/2012<\/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>Jos\u00e9 Antonio Oller Berber<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: eulogio Oset baguena <\/li>\n<li>Manuel Jos\u00e9 Vicente vacas (vocal)<\/li>\n<li>Jorge Martin camalich (vocal)<\/li>\n<li>Jos\u00e9 ram\u00f3n Pel\u00e1ez sagredo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Manuel Alarc\u00f3n Soriano En esta tesis doctoral se ha investigado la dispersi\u00f3n pi\u00f3n-nucle\u00f3n en diferentes formalismos [&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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