{"id":31911,"date":"2025-07-16T15:00:06","date_gmt":"2025-07-16T15:00:06","guid":{"rendered":"http:\/\/medexperts.pro\/?p=31911"},"modified":"2025-07-16T15:24:41","modified_gmt":"2025-07-16T15:24:41","slug":"new-clue-to-how-matter-outlasted-antimatter-at-the-big-bang-is-found","status":"publish","type":"post","link":"https:\/\/medexperts.pro\/?p=31911","title":{"rendered":"New Clue to How Matter Outlasted Antimatter at the Big Bang Is Found"},"content":{"rendered":"
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Physicists working at the CERN particle physics lab said they detected a slight but significant difference in how particles of matter and antimatter decay.<\/p>\n

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Understanding why matter and antimatter behave differently is key to understanding why there is a universe at all. Now physicists have discovered the latest example of a subtle difference between the stuff that makes up galaxies, stars, planets and us, and its evil-twin opposite.<\/p>\n

Particles of antimatter, like anti-electrons and anti-protons, possess the same mass but opposite electric charge as the usual electrons and protons. In a discovery published on Wednesday in the journal Nature<\/a>, an international collaboration of scientists working at the CERN particle physics laboratory outside Geneva described an imbalance among particles that are cousins to the protons and neutrons that make up everyday objects.<\/p>\n

That makes the new observations \u201cvery important for us to further understand bigger questions like the matter-antimatter asymmetries in the universe,\u201d said Xueting Yang, a graduate student at Peking University who led the analysis.<\/p>\n

The Big Bang that created the universe should have produced equal amounts of matter and antimatter. When a particle of matter bumps into its antimatter counterpart, the two particles annihilate. Thus, all of the matter should have annihilated all of the antimatter in a cataclysmic burst of radiation, leaving an empty universe for eternity.<\/p>\n<\/div>\n<\/div>\n

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And yet, 13.8 billion years later, you \u2014 made of matter, not antimatter \u2014 are reading this news on a device (or in a newspaper), which is also made of matter. Somehow, in the instant after the Big Bang, for each billion or so pairs of matter and antimatter, an extra particle of matter persisted.<\/p>\n

This slight tipping of the laws of physics toward matter is known as charge-parity, or CP, violation.<\/p>\n

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Physicists working at the CERN particle physics lab said they detected a slight but significant difference in how particles of matter and antimatter decay.Understanding why matter and antimatter behave differently is key to understanding why there is a universe at all. Now physicists have discovered the latest example of a subtle difference between the stuff that makes up galaxies, stars, planets and us, and its evil-twin opposite.Particles of antimatter, like anti-electrons and anti-protons, possess the same mass but opposite electric charge as the usual electrons and protons. In a discovery published on Wednesday in the journal Nature, an international collaboration of scientists working at the CERN particle physics laboratory outside Geneva described an imbalance among particles that are cousins to the protons and neutrons that make up everyday objects.That makes the new observations \u201cvery important for us to further understand bigger questions like the matter-antimatter asymmetries in the universe,\u201d said Xueting Yang, a graduate student at Peking University who led the analysis.The Big Bang that created the universe should have produced equal amounts of matter and antimatter. When a particle of matter bumps into its antimatter counterpart, the two particles annihilate. Thus, all of the matter should have annihilated all of the antimatter in a cataclysmic burst of radiation, leaving an empty universe for eternity.And yet, 13.8 billion years later, you \u2014 made of matter, not antimatter \u2014 are reading this news on a device (or in a newspaper), which is also made of matter. Somehow, in the instant after the Big Bang, for each billion or so pairs of matter and antimatter, an extra particle of matter persisted.This slight tipping of the laws of physics toward matter is known as charge-parity, or CP, violation.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and\u00a0log into\u00a0your Times account, or\u00a0subscribe\u00a0for all of The Times.Thank you for your patience while we verify access.Already a subscriber?\u00a0Log in.Want all of The Times?\u00a0Subscribe.<\/p>\n","protected":false},"author":1,"featured_media":31913,"comment_status":"close","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-31911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"_links":{"self":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/31911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=31911"}],"version-history":[{"count":2,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/31911\/revisions"}],"predecessor-version":[{"id":31914,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/posts\/31911\/revisions\/31914"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=\/wp\/v2\/media\/31913"}],"wp:attachment":[{"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=31911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=31911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medexperts.pro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=31911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}