https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. The CMS collaboration reports the first measurement of the quantum properties of a family of tetraquarks that was recently discovered at the LHC. https://phys.org/news/2025-12-deciphering-heavyweights-tetraquark-world.html General Physics Wed, 03 Dec 2025 13:07:41 EST news683989621 The observation of elusive, exotic particles is the key objective of countless studies, as it could open new avenues for research, while also improving present knowledge of the matter contained in the universe and its underlying physics. The quark model, a theoretical model introduced in 1964, predicted the existence of elementary subatomic particles known as quarks in their different configurations. https://phys.org/news/2023-09-lhcb-collaboration-doubly-tetraquark-neutral.html Quantum Physics Fri, 01 Sep 2023 09:20:01 EDT news612778721 Nuclear physicists may have finally pinpointed where in the proton a large fraction of its mass resides. A recent experiment carried out at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility has revealed the radius of the proton's mass that is generated by the strong force as it glues together the proton's building block quarks. The result was recently published in Nature. https://phys.org/news/2023-03-gluon-mass-proton.html General Physics Wed, 29 Mar 2023 13:03:20 EDT news599313793 Today the international LHCb collaboration at the Large Hadron Collider (LHC) presented new measurements of rare particle transformations, or decays, that provide one of the highest-precision tests yet of a key property of the Standard Model of particle physics, known as lepton flavor universality. https://phys.org/news/2022-12-cern-rare-decays-high-precision-lepton.html General Physics Tue, 20 Dec 2022 14:06:33 EST news590767589 Theorists at the University of Pittsburgh and Swansea University have shown that recent experimental results from the CERN collider give strong evidence for a new form of matter. https://phys.org/news/2022-09-team-physicists-pentaquark-states.html Quantum Physics Mon, 26 Sep 2022 16:33:57 EDT news583428834 Physicists at Cern have discovered a plethora of new exotic particles being created in the collisions produced by the Large Hadron Collider over the past few years. So many have been found in fact, that our collaboration (LHCb), which has discovered 59 out of 66 recent particles, has come up with a new naming scheme to help us impose some order on the growing particle zoo https://phys.org/news/2022-08-scientists-newly-particles-scheme.html General Physics Thu, 04 Aug 2022 09:18:11 EDT news578823486 Over the course of the 20th century, physicists have discovered numerous elementary particles. The largest family of these particles are the so-called hadrons, subatomic particles that take part in strong interactions. https://phys.org/news/2022-07-lhcb-exotic-tetraquark.html Quantum Physics Thu, 07 Jul 2022 10:10:02 EDT news576406781 The physics lab that's home to the world's largest atom smasher announced on Tuesday the observation of three new "exotic particles" that could provide clues about the force that binds subatomic particles together. https://phys.org/news/2022-07-cern-touts-discovery-exotic-particles.html General Physics Tue, 05 Jul 2022 16:27:19 EDT news576257234 The international LHCb collaboration at the Large Hadron Collider (LHC) has observed three never-before-seen particles: a new kind of pentaquark and the first-ever pair of tetraquarks, which includes a new type of tetraquark. The findings, presented today at a CERN seminar, add three new exotic members to the growing list of new hadrons found at the LHC. They will help physicists better understand how quarks bind together into these composite particles. https://phys.org/news/2022-07-lhcb-exotic-particles-pentaquark-first-ever.html General Physics Tue, 05 Jul 2022 06:44:23 EDT news576222244 Ten years ago, on July 4 2012, the ATLAS and CMS collaborations at the Large Hadron Collider (LHC) announced the discovery of a new particle with features consistent with those of the Higgs boson predicted by the Standard Model of particle physics. The discovery was a landmark in the history of science and captured the world's attention. One year later it won François Englert and Peter Higgs the Nobel Prize in Physics for their prediction made decades earlier, together with the late Robert Brout, of a new fundamental field, known as the Higgs field, that pervades the universe, manifests itself as the Higgs boson and gives mass to the elementary particles. https://phys.org/news/2022-07-higgs-boson-ten-years-discovery.html General Physics Mon, 04 Jul 2022 10:38:55 EDT news576149921 How many new particles has the LHC discovered? The most widely known discovery is of course that of the Higgs boson. Less well known is the fact that, over the past 10 years, the LHC experiments have also found more than 50 new particles called hadrons. Coincidentally, the number 50 appears in the context of hadrons twice, as 2021 marks the 50th anniversary of hadron colliders: on 27 January 1971, two beams of protons collided for the first time in CERN's Intersecting Storage Rings accelerator, making it the first accelerator in history to produce collisions between two counter-rotating beams of hadrons. https://phys.org/news/2021-03-large-hadron-collider-tally-hadrons.html General Physics Wed, 03 Mar 2021 08:26:28 EST news533982382 The strong interaction is one of the fundamental forces of nature, which binds quarks into hadrons such as the proton and the neutron, the building blocks of atoms. According to the quark model, hadrons can be formed by two or three quarks, called mesons and baryons respectively, and collectively referred to as conventional hadrons. The quark model also allows for the existence of so-called exotic hadrons, composed by four (tetraquarks), five (pentaquarks) or more quarks. A rich spectrum of exotic hadrons is expected just as for the conventional ones. However, no unambiguous signal of exotic hadrons was observed until 2003, when the X(3872) state was discovered by the Belle experiment. In the following years, a few more exotic states were discovered. The explanation of their properties requires the existence of four constituent quarks. Identification of pentaquark states is even more difficult, and the first candidates were observed by the LHCb experiment in 2015. All these known states contain at most two heavy quarks—the beauty or charm quark. https://phys.org/news/2020-11-four-charm-quark.html General Physics Wed, 11 Nov 2020 13:04:07 EST news524322241 The LHCb collaboration at CERN has announced the discovery of a new exotic particle: a so-called "tetraquark". The paper by more than 800 authors is yet to be evaluated by other scientists in a process called "peer review", but has been presented at a seminar. It also meets the usual statistical threshold for claiming the discovery of a new particle. https://phys.org/news/2020-07-cern-physicists-discovery-unique-particle.html General Physics Thu, 09 Jul 2020 10:32:27 EDT news513509542 The Large Hadron Collider Beauty (LHCb) project has observed an exotic particle made up of four charm quarks for the first time. https://phys.org/news/2020-07-exotic-particle-cern.html General Physics Wed, 01 Jul 2020 06:08:57 EDT news512802530 Florida State University physicists are using photon-proton collisions to capture particles in an unexplored energy region, yielding new insights into the matter that binds parts of the nucleus together. https://phys.org/news/2019-10-physics-ground-explore-unknown-energy.html General Physics Thu, 10 Oct 2019 09:06:51 EDT news489917204 A team of researchers working on the LHCb collaboration has found evidence showing that a pentaquark they have observed has a molecule-like structure. In their paper published in the journal Physical Review Letters, the group describes the evidence and the structure of the pentaquark they observed. https://phys.org/news/2019-06-evidence-lhc-pentaquark-molecule-like.html General Physics Fri, 07 Jun 2019 09:40:02 EDT news479118444 The world's most advanced particle accelerator for investigating the quark structure of the atom's nucleus has just charmed physicists with a new capability. The production of charm quarks in J/ψ (J/psi) particles by CEBAF at the Department of Energy's Thomas Jefferson National Accelerator Facility confirms that the facility has expanded the realm of precision nuclear physics research with electron beams to higher energies. https://phys.org/news/2019-04-cebaf-charm.html General Physics Thu, 18 Apr 2019 12:47:43 EDT news474810457 Tomasz Skwarnicki, professor of physics in the College of Arts and Sciences at Syracuse University, has uncovered new information about a class of particles called pentaquarks. His findings could lead to a new understanding of the structure of matter in the universe. https://phys.org/news/2019-03-physicists-class-pentaquarks.html General Physics Tue, 26 Mar 2019 05:30:02 EDT news472796993 The LHCb experiment at CERN is a hotbed of new and outstanding physics results. In just the last few months, the collaboration has announced the measurement of a very rare particle decay and evidence of a new manifestation of matter-antimatter asymmetry, to name just two examples. https://phys.org/news/2017-03-lhcb-exceptionally-large-group-particles.html General Physics Fri, 17 Mar 2017 07:33:50 EDT news408954816 Physicists in the Syracuse University College of Arts and Sciences have made science history by confirming the existence of a rare four-quark particle and discovering evidence of three other "exotic" siblings. https://phys.org/news/2016-07-physicists-family-tetraquarks.html General Physics Fri, 08 Jul 2016 09:02:29 EDT news387187335 On 28 June, the LHCb collaboration reported the observation of three new "exotic" particles and the confirmation of the existence of a fourth one in data from the Large Hadron Collider (LHC). These particles seem to be formed by four quarks (the fundamental constituent of the matter inside all the atoms of the universe): two quarks and two antiquarks (that is, a tetraquark). Due to their non-standard quark content, the newly observed particles have been included in the broad category of so-called exotic particles, although their exact theoretical interpretation is still under study. https://phys.org/news/2016-07-lhcb-unveils-particles.html General Physics Tue, 05 Jul 2016 08:56:02 EDT news386927752 Undeterred by a recent weasel incursion, CERN announced last week that the Large Hadron Collider (LHC) is back up and running for the 2016 season, smashing protons together at nearly the speed of light and creating exotic forms of matter in the debris. https://phys.org/news/2016-05-lhc-reboot-piles.html General Physics Tue, 17 May 2016 08:30:02 EDT news382691870 A team of scientists has successfully measured particles of light being "squeezed", in an experiment that had been written off in physics textbooks as impossible to observe. https://phys.org/news/2015-08-scientists-particle.html Quantum Physics Mon, 31 Aug 2015 11:00:08 EDT news360232746 In July, scientists at the Large Hadron Collider (LHC) reported the discovery of the pentaquark, a long-sought particle first predicted to exist in the 1960s as a consequence of the theory of elementary particles and their interactions proposed by Murray Gell-Mann, Caltech's Robert Andrews Millikan Professor of Theoretical Physics, Emeritus. https://phys.org/news/2015-08-century-exotic-pentaquark-particle.html General Physics Mon, 24 Aug 2015 09:10:01 EDT news359623742 The world particle-physics community has convened in Vienna for the 2015 European Physical Society Conference on High Energy Physics (EPS-HEP2015), where the latest results in the field are being presented and discussed. These include the first results from Run 2 of the Large Hadron Collider (LHC) at CERN, which are being presented for the very first time, less than two months after the experiments started to take data at the unprecedented energy of 13 TeV, following a two-year long shutdown. https://phys.org/news/2015-07-latest-results-lhc-vienna.html General Physics Tue, 28 Jul 2015 08:40:01 EDT news357289896 Today, the LHCb experiment at CERN's Large Hadron Collider has reported the discovery of a class of particles known as pentaquarks. The collaboration has submitted a paper reporting these findings to the journal Physical Review Letters. https://phys.org/news/2015-07-cern-lhcb-exotic-pentaquark-particles.html General Physics Tue, 14 Jul 2015 05:21:33 EDT news356070076 You may have heard that CERN announced the discovery of a strange particle known as Z(4430). A paper summarizing the results has been published on the physics arxiv, which is a repository for preprint (not yet peer reviewed) physics papers. The new particle is about 4 times more massive than a proton, has a negative charge, and appears to be a theoretical particle known as a tetraquark. The results are still young, but if this discovery holds up it could have implications for our understanding of neutron stars. https://phys.org/news/2014-04-cern-discovery-exotic-particles-affect.html General Physics Fri, 11 Apr 2014 09:16:38 EDT news316426586 (PhysOrg.com) -- A dark-matter experiment deep in the Soudan mine of Minnesota now has detected a seasonal signal variation similar to one an Italian experiment has been reporting for more than a decade. https://phys.org/news/2011-06-scientists-dark.html General Physics Tue, 07 Jun 2011 08:36:30 EDT news226654570 Physicists have devised a theory that unifies two widely studied mysteries of the universe: why there is an imbalance between regular matter and anti-matter (scientists expect to see equal amounts of each, but observe less anti-matter), and the identity of “dark matter” – the enigmatic particles thought to account for the extra gravitational pull observed in distant galaxies. https://phys.org/news/2007-01-theory-universe-biggest-mysteries.html General Physics Mon, 22 Jan 2007 10:36:25 EST news88684585 New, higher precision data that could only have been gathered at the Department of Energy’s Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn’t appear in another place it was expected. https://phys.org/news/2005-07-higher-precision-analysis-doesnt-yield.html Fri, 01 Jul 2005 15:21:31 EDT news4903