The best-known particle in the lepton family is the electron, a key building block of matter and central to our understanding of electricity. But the electron is not an only child. It has two heavier siblings, the muon and ...
General Physics
Jul 30, 2020
2
115
The ATLAS Collaboration at CERN has announced strong evidence of the production of four top quarks. This rare Standard Model process is expected to occur only once for every 70 thousand pairs of top quarks created at the ...
General Physics
Jun 23, 2020
0
164
The LHCb collaboration has reported an intriguing new result in its quest to test a key principle of the Standard Model called lepton universality. Although not statistically significant, the finding—a possible difference ...
General Physics
Jan 20, 2020
0
240
Electrons with 'colleagues'—other leptons—are one of many products of collisions observed in the LHCb experiment at the Large Hadron Collider. According to theorists, some of these particles may be created in processes ...
General Physics
Dec 16, 2019
1
59
The Beijing Spectrometer III (BESIII) collaboration, a large team of researchers from universities worldwide conducting particle physics studies has recently reported the first observation of the leptonic decay D+→τ+ντ. ...
As the heaviest known particle, the top quark plays a key role in studies of fundamental interactions. Due to its short lifetime, the top quark decays before it can turn into a hadron. Thus, its properties are preserved and ...
General Physics
Aug 8, 2019
0
185
Does the Higgs boson follow all of the rules set by the Standard Model? Since discovering the particle in 2012, the ATLAS and CMS Collaborations have been hard at work studying the behaviour of the Higgs boson. Any unexpected ...
General Physics
Aug 6, 2019
1
273
Could a Grand Unified Theory resolve the remaining mysteries of the Standard Model? If verified, it would provide an elegant description of the unification of Standard Model forces at very high energies, and might even explain ...
General Physics
Mar 13, 2019
0
84
Matter is made of elementary particles, and the Standard Model of particle physics states that these particles occur in two families: leptons (such as electrons and neutrinos) and quarks (which make up protons and neutrons). ...
General Physics
Sep 19, 2018
16
612
To anyone but a physicist, it sounds like something out of "Star Trek." But lepton universality is a real thing.
General Physics
Jun 8, 2017
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