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Strangeness is an excited state of matter and its decay is governed by CKM mixing. The terms strange and strangeness predate the discovery of the quark, and were adopted after its discovery in order to preserve the continuity of the phrase: strangeness of particles as −1 and anti-particles as +1, per the original definition.
Strangeness (Italian: La stranezza) is a 2022 Italian comedy-drama film directed by Roberto Andò. [ 1 ] [ 2 ] The film won four David di Donatello awards, for best original screenplay, best producer, best production designer and best costumes. [ 3 ]
A strange particle is an elementary particle with a strangeness quantum number different from zero. Strange particles are members of a large family of elementary particles carrying the quantum number of strangeness, including several cases where the quantum number is hidden in a strange/anti-strange pair, for example in the ϕ meson.
While studying these decays, Murray Gell-Mann (in 1953) [4] [5] and Kazuhiko Nishijima (in 1955) [6] developed the concept of strangeness (which Nishijima called eta-charge, after the eta meson (η)) to explain the "strangeness" of the longer-lived particles. The Gell-Mann–Nishijima formula is the result of these efforts to understand strange ...
This gives new eigenvectors, which we can call K 1 which is the difference of the two states of opposite strangeness, and K 2, which is the sum. The two are eigenstates of CP with opposite eigenvalues; K 1 has CP = +1, and K 2 has CP = −1 Since the two-pion final state also has CP = +1, only the K 1 can decay this way.
In high-energy nuclear physics, strangeness production in relativistic heavy-ion collisions is a signature and diagnostic tool of quark–gluon plasma (QGP) formation and properties. [1] Unlike up and down quarks , from which everyday matter is made, heavier quark flavors such as strange and charm typically approach chemical equilibrium in a ...
A strangelet (pronounced / ˈ s t r eɪ n dʒ. l ɪ t /) is a hypothetical particle consisting of a bound state of roughly equal numbers of up, down, and strange quarks.An equivalent description is that a strangelet is a small fragment of strange matter, small enough to be considered a particle.
I 3 = isospin, C = charm, S = strangeness, T = topness, B′ = bottomness. * Notation such as 173 210 ± 510 ± 710, in the case of the top quark, denotes two types of measurement uncertainty : The first uncertainty is statistical in nature, and the second is systematic .