{"id":36392,"date":"2026-03-23T10:36:57","date_gmt":"2026-03-23T04:51:57","guid":{"rendered":"https:\/\/www.revoscience.com\/en\/?p=36392"},"modified":"2026-03-23T10:36:59","modified_gmt":"2026-03-23T04:51:59","slug":"lhcb-collaboration-discovers-new-proton-like-particle","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/lhcb-collaboration-discovers-new-proton-like-particle\/","title":{"rendered":"LHCb Collaboration discovers new proton-like particle"},"content":{"rendered":"\n
\"\"
Artist\u2019s impression of the new particle, which contains two charm quarks and one down quark\u00a0(Image: CERN)<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

Geneva, March 23 <\/strong> \u2013 CERN\u2019s Large Hadron Collider has produced a new particle made of two charm quarks and one down quark, researchers said at the Moriond conference, marking only the second time a baryon with two heavy quarks has been observed.<\/p>\n\n\n\n

The particle resembles a proton but is about four times heavier, with two charm quarks replacing the proton\u2019s two up quarks. Scientists said the discovery will help test quantum chromodynamics, the theory describing how the strong force binds quarks into protons, neutrons and other hadrons.<\/p>\n\n\n\n

The LHCb Collaboration observed the baryon in proton\u2013proton collisions during the collider\u2019s third run, with a statistical significance of 7 sigma, well above the 5 sigma threshold required to claim a discovery.<\/p>\n\n\n\n

\u201cThis is the first new particle identified after the upgrades to the LHCb detector completed in 2023,\u201d said LHCb Spokesperson Vincenzo Vagnoni. \u201cIt will help theorists refine models of the strong force and explore exotic hadrons such as tetraquarks and pentaquarks.\u201d<\/p>\n\n\n\n

A similar particle with two charm quarks and one up quark was reported in 2017. The new version, with a down quark instead, is predicted to have a lifetime up to six times shorter, making it harder to detect.<\/p>\n\n\n\n

\u201cThis major result highlights how upgrades at CERN directly lead to new discoveries,\u201d said CERN Director-General Mark Thomson. \u201cIt sets the stage for the transformative science expected from the High-Luminosity LHC.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

Geneva, March 23 \u2013 CERN\u2019s Large Hadron Collider has produced a new particle made of two charm quarks and one down quark, researchers said at the Moriond conference<\/p>\n","protected":false},"author":2,"featured_media":36393,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-36392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physics"],"featured_image_urls":{"full":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks.webp",1440,810,false],"thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-200x200.webp",200,200,true],"medium":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-675x380.webp",675,380,true],"medium_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-768x432.webp",750,422,true],"large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-1100x619.webp",750,422,true],"1536x1536":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks.webp",1440,810,false],"2048x2048":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks.webp",1440,810,false],"ultp_layout_landscape_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-1200x800.webp",1200,800,true],"ultp_layout_landscape":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-870x570.webp",870,570,true],"ultp_layout_portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-600x810.webp",600,810,true],"ultp_layout_square":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-600x600.webp",600,600,true],"newspaper-x-single-post":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-760x490.webp",760,490,true],"newspaper-x-recent-post-big":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-550x360.webp",550,360,true],"newspaper-x-recent-post-list-image":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-95x65.webp",95,65,true],"web-stories-poster-portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-640x810.webp",640,810,true],"web-stories-publisher-logo":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-96x96.webp",96,96,true],"web-stories-thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/two-charm-quarks-150x84.webp",150,84,true]},"author_info":{"info":["RevoScience"]},"category_info":"Physics<\/a>","tag_info":"Physics","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/comments?post=36392"}],"version-history":[{"count":1,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36392\/revisions"}],"predecessor-version":[{"id":36394,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36392\/revisions\/36394"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media\/36393"}],"wp:attachment":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media?parent=36392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/categories?post=36392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/tags?post=36392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}