B meson


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B meson

[¦bē ′mā‚zän]
(particle physics)
An elementary particle with strong nuclear interactions, baryon number B = 0, spin J = 0, positive parity, negative charge parity, isotopic spin I = 1, and mass 1234 MeV, that decays into an omega meson and a pion.
A meson consisting of a combination of a bottom (b) quark with an ordinary up (u) or down (d) quark, having a mass of approximately 5.2 GeV.
References in periodicals archive ?
(1980) CP Non conservation in Cascade Decays of B Mesons. Phys.
B mesons are made up of one quark (the building block of protons and neutrons) and one anti-quark, which is the antimatter partner to the quark.
The new result is based on seven years of studying trillions of short-lived particles called B mesons produced at the Fermi National Accelerator Laboratory's Tevatron particle collider in Batavia, Ill.
But, he adds, with only about 250 of the rare B meson decays generated at Belle so far, the team can't yet reach a firm conclusion.
The measurements can perhaps be substantiated by measurement of the decay width of B mesons. Several experiments at LHCb are contemplating the possibility of searching for more B meson decays.
In Table 5, we observe that all the values of pseudovector mesons are close to the experimental results except the value of B meson which is in good agreement with the experimental value.
This past year's precise lattice calculations indicate that such a method could be in the offing for B meson studies.
Consider the decay of B meson into three particles of masses [m.sub.1], [m.sub.2], and [m.sub.3].
"It appears that we have established now that there is CP violation in the B meson system," says David G.
Scientists have also reported preliminary indications of a CP violation in experiments with a particle called a B meson (SN: 2/20/99, p.
The prevailing model of particle physics, which appears to account for the asymmetrical decays of Ks and calls for asymmetry in certain B meson decays as well, falls short of predicting the observed disparity.