{"id":20494,"date":"2025-08-12T16:50:00","date_gmt":"2025-08-12T14:50:00","guid":{"rendered":"https:\/\/citeni.udc.es\/?p=20494"},"modified":"2025-10-17T15:01:11","modified_gmt":"2025-10-17T13:01:11","slug":"persoal-investigador-da-udc-contribue-a-observacion-da-desintegracion-de-barions-mais-rara-rexistrada","status":"publish","type":"post","link":"https:\/\/citeni.udc.es\/gl\/persoal-investigador-da-udc-contribue-a-observacion-da-desintegracion-de-barions-mais-rara-rexistrada\/","title":{"rendered":"Persoal investigador da UDC contrib\u00fae \u00e1 observaci\u00f3n da desintegraci\u00f3n de bari\u00f3ns m\u00e1is rara rexistrada"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"20494\" class=\"elementor elementor-20494\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-52db19f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"52db19f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9812a3d\" data-id=\"9812a3d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c64ae41 elementor-widget elementor-widget-tp-heading\" data-id=\"c64ae41\" data-element_type=\"widget\" data-widget_type=\"tp-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t\n                    <div class=\"tp-section\">\n                                <span class=\"tp-section__sub-title left-line right-line mb-25 tp-el-subtitle\">\n                    O investigador Jeremy Dalseno foi reco\u00f1ecido pola American Physical Society polo seu papel na confirmaci\u00f3n deste proceso, que ocorre unha vez cada 100 mill\u00f3ns de decaementos. O resultado, obtido no experimento LHCb do CERN, confirma con gran precisi\u00f3n o Modelo Est\u00e1ndar da F\u00edsica de Part\u00edculas                <\/span>\n                                                            <\/div>\n        \n        \n        \t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7eafbd elementor-widget elementor-widget-text-editor\" data-id=\"b7eafbd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>A Coru\u00f1a, 12 de agosto de 2025.\u2013<\/strong> Os bari\u00f3ns compo\u00f1en toda a materia visible do universo, polo que estudar como se desintegran axuda aos cient\u00edficos a po\u00f1er a proba a precisi\u00f3n das predici\u00f3ns do Modelo Est\u00e1ndar, a teor\u00eda que describe a maior\u00eda das part\u00edculas e forzas co\u00f1ecidas, e a buscar indicios dunha f\u00edsica m\u00e1is al\u00e1 del.<\/p><p>Pero, por que mirar m\u00e1is al\u00f3 desde modelo? Ademais da propia natureza da investigaci\u00f3n cient\u00edfica, impulsada polo desexo de explorar o desco\u00f1ecido, existen fen\u00f3menos como a materia escura ou o predominio da materia sobre a antimateria que o Modelo Est\u00e1ndar non pode explicar, co cal estanse a buscar sinais que poidan indicar a presenza de novas leis da f\u00edsica.<\/p><p>Unha colaboraci\u00f3n internacional do experimento LHCb &#8211; que procede das siglas en ingl\u00e9s Large Hadron Collider beauty experiment-, un dos seis detectores de part\u00edculas que est\u00e1 no Centro Europeo para la Investigaci\u00f3n Nuclear (CERN) v\u00e9n de anunciar a observaci\u00f3n dun tipo de decaemento de bari\u00f3ns incriblemente raro: a transformaci\u00f3n dun bari\u00f3n sigma-mais (\u03a3\u207a) nun prot\u00f3n, un antimu\u00f3n e un mu\u00f3n.<\/p><p>Este achado, liderado polo investigador Francesco Dettori da Universidade de Cagliari (Italia), contou coa participaci\u00f3n destacada de Jeremy Peter Dalseno, investigador posdoutoral do Centro de Investigaci\u00f3n en Tecnolox\u00edas Navais e Industriais (CITENI) da Universidade da Coru\u00f1a. Dalseno foi responsable do modelado do proceso f\u00edsico e do seu contraste coas predici\u00f3ns do Modelo Est\u00e1ndar.<\/p><p>Estamos ante un proceso que ocorre s\u00f3 unha vez entre cada 100 mill\u00f3ns de decaementos, o cal foi confirmado empregando datos de colisi\u00f3ns prot\u00f3n-prot\u00f3n recollidos entre 2016 e 2018 no LHC, per\u00edodo no que os cient\u00edficos analizaron arredor de 250 eventos de decaemento de \u03a3\u207a.<\/p><p>O resultado, cualificado como o decaemento de bari\u00f3ns m\u00e1is raro xamais observado, foi posible grazas \u00e1 combinaci\u00f3n de t\u00e9cnicas avanzadas de aprendizaxe autom\u00e1tica e \u00e1s melloras no sistema de adquisici\u00f3n de datos do detector LHCb, desenvolvidas no marco dun proxecto ERC, liderado tam\u00e9n desde o CITENI, polo investigador distinguido do programa Oportunius da Xunta de Galicia Diego Mart\u00ednez Santos.<\/p><p>Este estudo confirma con gran precisi\u00f3n as predici\u00f3ns do Modelo Est\u00e1ndar, resolvendo unha inc\u00f3gnita aberta desde hai vinte anos, cando o experimento HyperCP en Fermilab detectou indicios deste proceso que apuntaban \u00e1 posible existencia de novas forzas f\u00edsicas m\u00e1s al\u00f3 das contidas neste modelo.<\/p><p>\u201cUnha vez m\u00e1is, o Modelo Est\u00e1ndar prevalece\u201d &#8211; comenta o equipo investigador -. Os datos seguen estando en li\u00f1a coas s\u00faas predici\u00f3ns, o que confirma a s\u00faa solidez a pesar de ter sido creado hai d\u00e9cadas\u201d.<\/p><p><em>Foto: Jeremy Dalseno,<\/em><em>\u00a0investigador<\/em><em> posdoutoral do Centro de Investigaci\u00f3n en Tecnolox\u00edas Navais e Industriais (CITENI) da Universidade da Coru\u00f1a.<\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>O investigador Jeremy Dalseno foi reco\u00f1ecido pola American Physical Society polo seu papel na confirmaci\u00f3n deste proceso, que ocorre unha vez cada 100 mill\u00f3ns de decaementos. O resultado, obtido no experimento LHCb do CERN, confirma con gran precisi\u00f3n o Modelo Est\u00e1ndar da F\u00edsica de Part\u00edculas<\/p>\n","protected":false},"author":6,"featured_media":20495,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_vp_format_video_url":"","_vp_image_focal_point":[],"footnotes":""},"categories":[96],"tags":[],"class_list":["post-20494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novas"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"O investigador Jeremy Dalseno foi reco\u00f1ecido pola American Physical Society polo seu papel na confirmaci\u00f3n deste proceso, que ocorre unha vez cada 100 mill\u00f3ns de decaementos. 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O resultado, obtido no experimento LHCb do CERN, confirma con gran precisi\u00f3n o Modelo Est\u00e1ndar da F\u00edsica de Part\u00edculas\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/citeni.udc.es\/gl\/persoal-investigador-da-udc-contribue-a-observacion-da-desintegracion-de-barions-mais-rara-rexistrada\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/citeni.udc.es\/wp-content\/uploads\/2025\/09\/20250812-Jeremy-Dalseno.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/citeni.udc.es\/wp-content\/uploads\/2025\/09\/20250812-Jeremy-Dalseno.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-08-12T14:50:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-10-17T13:01:11+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/m.facebook.com\/CITENI.UDC\/\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@CITENI_UDC\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Persoal investigador da UDC contrib\u00fae \u00e1 observaci\u00f3n da desintegraci\u00f3n de bari\u00f3ns m\u00e1is rara rexistrada - CITENI\" \/>\n\t\t<meta name=\"twitter:description\" content=\"O investigador Jeremy Dalseno foi reco\u00f1ecido pola American Physical Society polo seu papel na confirmaci\u00f3n deste proceso, que ocorre unha vez cada 100 mill\u00f3ns de decaementos. 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