D meson


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Related to D meson: B meson, K meson, Rho meson

D meson

n.
Either of two mesons, one neutral and one positively charged, containing a charm quark and having masses 3,649 and 3,658 times that of an electron and mean lifetimes of about 4.2 × 10-13 and 1.04 × 10-12 second, respectively.
References in periodicals archive ?
Among them are calculations focused on D mesons, which also contain charm quarks.
Instead of B mesons, the Cornell physicists are investigating the properties of D mesons, which contain the charm-or c-quark.
for example, could be a combination of a strange quark, an up quark and two anti-down quarks, or a combination of two D mesons.