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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.
In particle physics, the baryon number is a strictly conserved additive quantum number of a system.It is defined as = (¯), where is the number of quarks, and ¯ is the number of antiquarks.
The strangeness flavour quantum number S (not to be confused with spin) was noticed to go up and down along with particle mass. The higher the mass, the lower the strangeness (the more s quarks). Particles could be described with isospin projections (related to charge) and strangeness (mass) (see the uds octet and decuplet figures on the right ...
According to the IUPAP, the symbol s is the official name, while "strange" is to be considered only as a mnemonic. [2] The name sideways has also been used because the s quark (but also the other three remaining quarks) has an I 3 value of 0 while the u ("up") and d ("down") quarks have values of + 1 / 2 and − 1 / 2 respectively.
These lists detail all known and predicted baryons in total angular momentum J = 1 / 2 and J = 3 / 2 configurations with positive parity. [5]Baryons composed of one type of quark (uuu, ddd, ...) can exist in J = 3 / 2 configuration, but J = 1 / 2 is forbidden by the Pauli exclusion principle.
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Mesons named with the letter "f" are scalar mesons (as opposed to a pseudo-scalar meson), and mesons named with the letter "a" are axial-vector mesons (as opposed to an ordinary vector meson) a.k.a. an isoscalar vector meson, while the letters "b" and "h" refer to axial-vector mesons with positive parity, negative C-parity, and quantum numbers I G of 1 + and 0 − respectively.
Laundry Symbols for Drying Clothes. Everything you need to know about how to dry an item can be found in the square on the care label. Be sure to check this before tossing your clothing in the ...