{"id":21775,"date":"2026-08-06T16:58:18","date_gmt":"2026-08-06T11:13:18","guid":{"rendered":"https:\/\/eng.dragonmedia.com.np\/?p=21775"},"modified":"2026-08-06T16:58:18","modified_gmt":"2026-08-06T11:13:18","slug":"chinese-scientists-find-strongest-evidence-yet-confirming-the-existence-of-a-glueball","status":"publish","type":"post","link":"https:\/\/eng.dragonmedia.com.np\/?p=21775","title":{"rendered":"Chinese Scientists Find Strongest Evidence Yet Confirming the Existence of a Glueball<\/strong>"},"content":{"rendered":"

Dragon Media News Desk<\/strong><\/p>\n

An international research team led by Chinese scientists has found the clearest experimental evidence to date confirming the existence of a new form of matter known as a glueball, following nearly 15 years of investigation.<\/p>\n

According to the Institute of High Energy Physics under the Chinese Academy of Sciences, researchers involved in the Beijing Spectrometer III, or BESIII, experiment concluded that the dominant component of a particle known as X(2370) is the lightest pseudoscalar glueball.<\/p>\n

The nuclei of ordinary atoms consist of protons and neutrons, which are themselves composed of quarks. Gluons mediate the strong interaction that binds quarks together.<\/p>\n

Under the Standard Model of particle physics, gluons can not only bind quarks but can also attract and bind with one another to form a separate particle known as a glueball.<\/p>\n

Although the existence of glueballs has been theoretically predicted for nearly five decades, no previous experiment had produced sufficiently clear evidence to confirm one.<\/p>\n

Using the BESIII experiment at the Beijing Electron Positron Collider, the research team first discovered the X(2370) particle in 2011.<\/p>\n

In 2024, researchers analysed data from 10 billion J\/\u03c8 events and determined that the particle had a spin-parity state of 0\u207b\u207a, consistent with the expected properties of the lightest pseudoscalar glueball.<\/p>\n

In the latest study, scientists examined several decay modes of X(2370). They found that its decay through the K*(892)K channel was strongly suppressed, helping establish that the particle possesses a flavour-singlet property.<\/p>\n

The flavour-singlet characteristic is one of the most important features distinguishing a glueball from ordinary particles composed of quark-antiquark pairs.<\/p>\n

X(2370) has also become the first flavour-singlet light hadron identified in a mass range above one gigaelectronvolt, according to the research.<\/p>\n

The particle\u2019s mass, spin-parity, high production rate in radiative J\/\u03c8 decays, decay patterns, narrow partial decay width and flavour-singlet property were all found to be consistent with theoretical predictions for a glueball.<\/p>\n

The research team said these combined features could not be naturally explained by interpretations involving ordinary mesons, multiquark particles or other mixed states.<\/p>\n

Scientists therefore concluded that the dominant component of X(2370) is the lightest 0\u207b\u207a glueball.<\/p>\n

Researchers described the finding as the clearest experimental result obtained in the nearly five-decade search for glueballs.<\/p>\n

The discovery provides strong experimental support for the theoretical prediction that gluons can bind with one another to form a new type of matter.<\/p>\n

The achievement is considered significant for testing the Standard Model of particle physics, particularly quantum chromodynamics, and for improving scientific understanding of the fundamental structure of matter.<\/p>\n

The latest BESIII study does not describe X(2370) as an entirely pure glueball. Rather, it concludes that a glueball is the dominant component of the particle.<\/p>\n

Further independent experiments and studies of additional decay channels are expected to provide stronger confirmation of the finding.<\/p>\n

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