strange quark


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strange quark

[′strānj ′kwärk]
(particle physics)
A quark with an electric charge of -⅓, baryon number of ⅓, strangeness of -1, and 0 charm. Symbolized s.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Jeremy Drake of the Harvard-Smithsonian Center for Astrophysics explains in the Harvard Gazette that, "If strange quark matter really exists, it implies that normal matter is not ultimately stable.
The difference between the chemical potentials of up (or down) and strange quarks is caused by the difference between their masses.
The strange matter is a ultra-dense matter formed by a big number of strange quarks bounded together with an electron atmosphere (this strange matter is hypothetical).
Narison, "Strange quark, tachyonic gluon masses and [absolute value of ([V.sub.us])] from hadronic tau decays," Physics Letters B, vol.
For the case of neutrino-proton scattering, the considered axial vector strange quark effects dominate the total cross section.
These findings can impact the physics of hybrid stars (neutron stars with quark matter) or strange quark stars in several ways.
For one massless quark ([m.sub.q] [approximately equal to] 0) and one of strange quark mass [m.sub.s], the average acceleration becomes
In case of flavor [n.sub.f] = 2+1, i can be u(d) for the light quark and s for the strange quark. By substituting (4) to (2), we can relate [[??].sub.i] to the corresponding diagonal susceptibilities defined by (3):
In the 1950s, researchers discovered exceptions to that perfect symmetry in the decay of K-mesons, or kaons (a type of meson consisting of a strange quark and a down quark).
The strange quark has a mass of about 0.5 GeV, the charm quark about 1.5 GeV and the bottom quark about 4.5 GeV.
Distinguished Professor Sheldon Stone says the findings are a first, although matter-antimatter asymmetry has been observed before in particles with strange quarks or beauty quarks.