{"id":3775,"date":"2026-04-20T13:34:33","date_gmt":"2026-04-20T13:34:33","guid":{"rendered":"https:\/\/terrarara.com.br\/en\/?page_id=3775"},"modified":"2026-04-20T13:34:33","modified_gmt":"2026-04-20T13:34:33","slug":"de-onde-vem-a-massa-nova-descoberta-revela-um-estado-exotico-no-nucleo-atomico","status":"publish","type":"page","link":"https:\/\/terrarara.com.br\/en\/?page_id=3775","title":{"rendered":"Where does mass come from? New discovery reveals an exotic state in the atomic nucleus"},"content":{"rendered":"<div class=\"wp-block-image\"><figure><img decoding=\"async\" src=\"https:\/\/vendedoradesonhos.com.br\/img\/sites\/img_nucleo_atomico2.jpg\" alt=\"\" style=\"width:100%\"><figcaption>Image via <a href=\"https:\/\/www.scientificamerican.com\/article\/physicists-solve-a-35-year-old-mystery-hidden-inside-atomic-cores\/\" target=\"_blank\">Scientific American<\/a><\/figcaption><\/figure><\/div><hr><\/p><p class=\"wp-block-paragraph\">\r\n\t<a href=\"https:\/\/doi.org\/10.1103\/6vsl-ng7x\" target=\"_blank\">doi.org\/10.1103\/6vsl-ng7x<\/a><br><a href=\"https:\/\/vendedoradesonhos.com.br\/credibilidade_estudo.php?c=41958\">Credibility<\/a>: <font color=\"#00FFFF\">9<\/font><font color=\"#00FF00\">9<\/font><font color=\"#FFFF00\">9<\/font><br><a href='http:\/\/terrarara.com.br\/en\"s=atomic core'>#Atomic Core<\/a><\/p><p><\/p><p>\r\n\t<!-- audio --><\/p><p>\r\n<button onclick=\"this.nextElementSibling.play()\" style=\"padding:12px 25px; font-size:18px; border:none; border-radius:8px; cursor:pointer;\">Listen<\/button><audio src=\"https:\/\/vendedoradesonhos.com.br\/audios\/41958-eng.mp3\" preload=\"none\"><\/audio><\/p><p>\r\n\t<strong>Almost everything around us has mass, but the origin of this mass remains one of the great questions in physics<\/strong><\/p><p> Current theory explains that mass arises from the properties of the vacuum-which is not empty space, but a complex and invisible structure that permeates the entire universe.\r\n<\/p><p>\r\nOne way to investigate this is to study mesons, particles formed by a quark and an antiquark that can briefly bind to atomic nuclei.<\/p><p>\r\nThese systems, called mesic nuclei, help to understand how mass is generated and how the vacuum behaves in extremely dense environments, such as the interior of an atomic nucleus.\r\n<\/p><p>\r\nNow, an international team of researchers has found evidence of an exotic state long predicted but never observed before: the  (eta prime) mesic nucleus.<\/p><p>\r\nThe results were published in the journal &#8220;Physical Review Letters&#8221;.\r\n<\/p><p>\r\n is a heavier meson than other similar mesons.<\/p><p>\r\nScientists believe that its mass may change when it is inside dense nuclear matter.<\/p><p>\r\nObserving this change offers valuable clues about how particles acquire mass in the universe.\r\n<\/p><p>\r\nTo conduct the experiment, researchers sent a high-energy proton beam against a carbon target at the GSI research center in Germany.<\/p><p>\r\nThis collision excited the carbon nuclei, allowing  mesons to be produced and possibly become trapped inside the nucleus, forming a bound state.<\/p><p>\r\nThey measured the excitation energy of the nuclei by analyzing deuterons (particles formed by a proton and a neutron) emitted in the reaction, using high-precision equipment such as the Fragment Separator (FRS) and the WASA detector.<\/p><p>\r\nThe data showed structures that correspond to the formation of these  bound states in the carbon-11 nucleus.\r\n<\/p><p>\r\nThe results indicate that the mass of  likely decreases when it is inside nuclear matter.<\/p><p>\r\nThis supports theoretical predictions and provides one of the first experimental pieces of evidence of how particle properties can change under conditions of extreme density.\r\n<\/p><p>\r\nAs lead researcher Kenta Itahashi explains, these measurements offer new clues about the behavior of mesons in nuclear matter and bring us closer to answers to fundamental questions: how does matter gain mass and how does the vacuum structure change within atomic nuclei?\r\n<\/p><p>\r\nFuture experiments aim to increase the precision of the measurements and search for more decay signals to definitively confirm the existence of these  mesic nuclei.<\/p><p>\r\nEach advance helps to unravel the basic laws that shape the universe and explain why things have mass.\r\n<\/p><p>\r\n<blockquote class=\"twitter-tweet\" data-media-max-width=\"560\"><p lang=\"en\" dir=\"ltr\">Where does mass come from? New discovery reveals an exotic state in the atomic nucleus<a href=\"https:\/\/twitter.com\/hashtag\/AtomicCore'src=hash&amp;ref_src=twsrc%5Etfw\">#AtomicCore<\/a><br><br>Almost everything around us has mass, but the origin of this mass remains one of the great questions in physics: <a href=\"https:\/\/t.co\/kjV3R8b4Ny\">pic.twitter.com\/kjV3R8b4Ny<\/a><\/p>&mdash; Rare Earth (@rareearth0) <a href=\"https:\/\/twitter.com\/rareearth0\/status\/2046419658631229692?ref_src=twsrc%5Etfw\">April 21, 2026<\/a><\/blockquote> <script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\r\n<hr>\r\n\r\n<p class=\"wp-block-paragraph\" style=\"text-align:right\"><em>Published in 04\/20\/2026 13h34<\/em><\/p>\r\n<hr>\r\n<p style=\"text-align:right\"><em><a href=\"https:\/\/terrarara.com.br\/?page_id=26651\">Portuguese version<\/a><\/em><\/p>\r\n<hr>\r\n\r\n\t\t<p class=\"wp-block-paragraph\">Text adapted by AI (Grok) and translated via Google API in the English version. Images from public image libraries or credits in the caption. Information about DOI, author and institution can be found in the body of the article.<\/p>\r\n\t\t<hr>\r\n\t\t<p>Reference article:<\/p>\r\n\t\t\r\n\t\t\r\n\r\n\r\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/scitechdaily.com\/where-does-mass-come-from-scientists-find-evidence-of-a-new-exotic-nuclear-state\/\" target=\"_blank\">https:\/\/scitechdaily.com\/where-does-mass-come-from-scientists-find-evidence-of-a-new-exotic-nuclear-state\/<\/a><\/li><\/ul>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Original study: <\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/doi.org\/10.1103\/6vsl-ng7x\" target=\"_blank\">https:\/\/doi.org\/10.1103\/6vsl-ng7x<\/a><\/li><\/ul>\r\n\r\n\r\n\r\n<hr class=\"wp-block-separator is-style-wide\"\/>\r\n\r\n<div style=\"position: buttonline;\"><iframe loading=\"lazy\" src=\"https:\/\/vendedoradesonhos.com.br\/rodape_sites.php?arg=41958\" frameborder=\"0\" height=\"420px\" width=\"100%\"><\/iframe><\/div>\r\n<div style=\"position: buttonline;\"><iframe loading=\"lazy\" src=\"https:\/\/vendedoradesonhos.com.br\/comentario_navegacao.php?arg=41958\" frameborder=\"0\" height=\"500px\" width=\"100%\"><\/iframe><\/div>\r\n<div style=\"position:absolute; width:40%; height:70px; top:-70px; left:0px;\"><iframe loading=\"lazy\" src=\"https:\/\/vendedoradesonhos.com.br\/oferta_site_esq.php?arg=41958\" frameborder=\"0\" height=\"100%\" width=\"100%\"><\/iframe><\/div>\r\n<div style=\"position:absolute; width:40%; height:70px; top:-70px; right:0px;\"><iframe loading=\"lazy\" src=\"https:\/\/vendedoradesonhos.com.br\/oferta_site_dir.php?arg=41958\" frameborder=\"0\" height=\"100%;\" width=\"100%\"><\/iframe><\/div>\r\n\r\n\r\n<div class=\"wp-block-image\"><figure><iframe loading=\"lazy\" src=\"https:\/\/vendedoradesonhos.com.br\/oferta_site_centralus.php\" width=\"100%\" height=\"330\" frameborder=\"0\"><\/iframe><figcaption>{teste}<\/figcaption><\/figure><\/div><hr>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":206,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3775","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/pages\/3775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3775"}],"version-history":[{"count":0,"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/pages\/3775\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=\/wp\/v2\/pages\/206"}],"wp:attachment":[{"href":"https:\/\/terrarara.com.br\/en\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}