Tag: quark
A quark is an elementary particle. According to the standard model, there are six flavors and quarks are observed to occur only in combinations of two (mesons) or three (baryons).
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In the wake of partons
Today, almost all the quarks in our Universe are neatly organised into larger particles, glued together by aptly named gluons. For the first few millionths of a second after the Big Bang, however, quarks and gluons were not confined, forming instead a state of matter known as a quark–gluon plasma (QGP). By studying the QGP
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Studying beautiful flavour transitions
Studying rare processes is part and parcel of particle physics, providing stringent tests of the Standard Model. At the recent International Conference on High Energy Physics (ICHEP), the CMS and LHCb Collaborations presented their latest research into one such process: the transformation of a beauty quark into a strange quark, a muon and the oppositely charged antimuon (b→sμ+μ–). Flavour transitions – when
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CMS looks deep inside quarks
The CMS Collaboration has probed deep inside quarks to search for potential building blocks within them
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Exotic atomic nucleus sheds light on the world of quarks
CERN and the Accelerator Laboratory in Jyväskylä, Finland, have teamed up to weigh in on the understanding of the effects of the weak force on quarks
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LHCb discovers three new exotic particles
The collaboration has observed a new kind of “pentaquark” and the first-ever pair of “tetraquarks”
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ALICE makes first direct observation of a fundamental effect in particle physics
The observation provides direct experimental access to the mass of an elementary particle known as the charm quark
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Large Hadron Collider restarts
Beams of protons are again circulating around the collider’s 27-kilometre ring, marking the end of a multiple-year hiatus for upgrade work
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LHCb discovers a new type of tetraquark at CERN
The LHCb collaboration has observed an exotic particle made up of four charm quarks for the first time
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CERN pays tribute to Murray Gell-Mann
The Nobel laureate, who coined the name “quarks”, passed away on 24 May