{"id":10420,"date":"2021-10-25T11:51:23","date_gmt":"2021-10-25T09:51:23","guid":{"rendered":"https:\/\/igfae.usc.es\/igfaedb\/detectadas-unhas-particulas-moi-enerxeticas-preditas-polo-igfae-hai-25-anos\/"},"modified":"2021-10-25T11:51:38","modified_gmt":"2021-10-25T09:51:38","slug":"detectadas-unhas-particulas-moi-enerxeticas-preditas-polo-igfae-hai-25-anos","status":"publish","type":"post","link":"https:\/\/igfae.usc.es\/igfaedb\/es\/detectadas-unhas-particulas-moi-enerxeticas-preditas-polo-igfae-hai-25-anos\/","title":{"rendered":"Detectadas unhas part\u00edculas moi enerx\u00e9ticas preditas polo IGFAE hai 25 anos"},"content":{"rendered":"

Instituci\u00f3ns e universidades americanas e europeas detectaron por primeira vez unhas part\u00edculas producidas en colisi\u00f3ns nucleares cobre-ouro no acelerador Relativistic Heavy Ion Collider<\/em> (RHIC) do Brookhaven National Laboratory<\/em> (EE. UU.) con ata m\u00e1is dun 50% da enerx\u00eda dispo\u00f1ible nos nucle\u00f3ns \u2012prot\u00f3ns e neutr\u00f3ns\u2012 dos n\u00facleos at\u00f3micos acelerados na colisi\u00f3n. Dese xeito, as part\u00edculas producidas son de novo aceleradas. Este descubrimento experimental confirma a predici\u00f3n te\u00f3rica<\/a> feita fai 25 anos no Instituto Galego de F\u00edsica de Altas Enerx\u00edas (IGFAE), centro mixto de investigaci\u00f3n da Universidade de Santiago de Compostela e a Xunta de Galicia, polos investigadores N\u00e9stor Armesto, Elena G. Ferreiro, Carlos Pajares, Mikhail Braun e Yuly Shabelski (estes dous \u00faltimos actualmente na Universidade de San Petersburgo). Os resultados<\/a> envi\u00e1ronse \u00e1 revista Physical Review C<\/em> e est\u00e1n pendentes de publicaci\u00f3n.<\/p>\n

\"\"<\/a>

Colisi\u00f3ns de i\u00f3ns de ouro observados polo detector STAR do Relativistic Heavy Ion Collider. Cr\u00e9dito: Brookhaven National Laboratory.<\/p><\/div>\n

Cando hai moitas colisi\u00f3ns entre os nucle\u00f3ns dos n\u00facleos at\u00f3micos prod\u00facense efectos entre os seus constitu\u00edntes \u2012os quarks\u2012 que posibilitan a produci\u00f3n de part\u00edculas m\u00e1is enerx\u00e9ticas que a que te\u00f1en os nucleones individuais. Por este motivo, este efecto foi denominado QCD accelerator<\/em> ou acelerador da Cromodin\u00e1mica Cu\u00e1ntica (QCD, polas s\u00faas siglas en ingl\u00e9s), a teor\u00eda que explica a interacci\u00f3n forte ou o comportamento entre os quarks e os glu\u00f3ns.<\/p>\n

Ata o de agora as evidencias foran moi d\u00e9biles e as incertezas demasiado altas como para validar o modelo te\u00f3rico do IGFAE. Non obstante, con estas novas medici\u00f3ns, as primeiras en colisi\u00f3ns de n\u00facleos tan pesados como o ouro e o cobre, conf\u00edrmase a predici\u00f3n.<\/p>\n

\u201cAs implicaci\u00f3ns deste achado \u2012explica Elena G. Ferreiro\u2012 poden supo\u00f1er un cambio nos modelos actuais utilizados para explicar a composici\u00f3n e formaci\u00f3n dos raios c\u00f3smicos, xa que estas part\u00edculas ultra enerx\u00e9ticas poder\u00edan formarse na atmosfera. As\u00ed mesmo, poder\u00edan descubrirse novas part\u00edculas\u201d, apunta a investigadora.<\/p>\n

Referencias:<\/p>\n

Evidence for a QCD accelerator in relativistic heavy-ion collisions<\/em>, L.C. Bland et al, enviado a Phys. Rev. C. arXiv:2110.09432<\/a> [nucl-ex]<\/p>\n

Fusion of strings and cosmic rays at ultrahigh-energies<\/em>, N. Armesto, M. A. Braun, E. G. Ferreiro, C. Pajares and Yu. M. Shabelski, Phys. Lett. B 389 (1996) 78-82. DOI: 10.1016\/S0370-2693(96)01248-8<\/a>.<\/p>\n

Imaxe principal: Detector STAR no Relativistic Heavy Ion Collider (RHIC). Cr\u00e9dito: Brookhaven National Laboratory.<\/p>\n","protected":false},"excerpt":{"rendered":"

Instituci\u00f3ns e universidades americanas e europeas detectaron por primeira vez unhas part\u00edculas producidas en colisi\u00f3ns nucleares cobre-ouro no acelerador Relativistic Heavy…<\/p>\n","protected":false},"author":21,"featured_media":10405,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[111,112],"tags":[],"aioseo_notices":[],"yoast_head":"\nDetectadas unhas part\u00edculas moi enerx\u00e9ticas preditas polo IGFAE hai 25 anos - IGFAE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/igfae.usc.es\/igfaedb\/es\/detectadas-unhas-particulas-moi-enerxeticas-preditas-polo-igfae-hai-25-anos\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Detectadas unhas part\u00edculas moi enerx\u00e9ticas preditas polo IGFAE hai 25 anos - 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