Why Is The Strange Quark Strange
The strangeness of a strange quark is -1 and therefore an anti-strange quark is 1. So a meson composed of a strange quark and an anti-strange quark will have an overall strangeness of 0 1 -1 0.
Their name comes from their strangely long lifetime.
Why is the strange quark strange. Consequently particles containing strange quarks such as the Lambda particle always lose their strangeness by decaying into lighter particles containing only up and down quarks. Strange quarks were discovered next and they lived a lot longer than the up and down quarks before they decayed. Using what we know from the Standard Model of particle physics a massive quark star may have enough gravitational energy to start burning strange matter.
If strange matter formed in the core it would eat its way out and consume the star says Farhi. Of the six flavors of quarks only the strange quark has a nonzero strangeness. Nuclear physicists have long been interested in hypernucleinuclei that contain one or more hyperons in which at least one of the three quarks is a strange quark.
The strange got its name from the strange mesons which when discovered were behaving strangely with respect to pions needing a new quantum number because they were generated in pairs Lamda K. Examples of hadrons containing strange quarks include kaons strange D mesons Sigma baryons and other strange particles. Because the strange quark is heavier than the up and down quarks it can spontaneously decay via the weak interaction into an up quark.
Today the explanation goes like this. This is a short video for my college describing in moderate detail the strange quarkWelcome to Dittoma. The origin of the charm quark name is because of a whim I like to think it was because it made the mathematics in the theory work like a charm.
A quark of charge 23 uct is always transformed to a quark of charge -13 dsb and vice versa. Like down quarks strange quarks have a charge of -13. For more information see the chart The Standard Model of Fundamental Particles and Interactions.
The first 688 people that go to that lin. While only a handful of. Down quarks can easily transform into up quarks and charm quarks can change into strange quarks.
This is because the transformation proceeds by the exchange of charged W bosons which must change the charge by one unit. Particles containing a strange quark decay more slowly because the strange quark can only decay via the weak interaction. The updown topbottom should be self evident.
The decay process for the lambda particle must violate that rule since there is no lighter particle which contains a strange quark - so the strange quark must be transformed to another quark in the process. Strange quarks are found in subatomic particles called hadrons. Underneath its crust the star would become a lump of strange matter or a strange star.
Strange quarks are the third lightest quarks which are subatomic particles that are so small they are believed to not be able to be divided. The name sideways has also been used because the s quark has an I3 value of 0 while the u and d quarks. Therefore it wouldnt be classified as a strange meson and the question is asking you to list the four strange mesons.
The strangeness of nucleons is zero because they only contain up and down quarks and no strange also called sideways quarks. Pseudoscalar excitations involving the heavier strange quark m s 96 MeV are as one would expect heavier states the η and η. The general pattern is that the quarks will decay to the most massive quark possible leading the the pattern.
Like all fermions which are particles that can not exist in the same place at the same time strange quarks have a spin of 12. But nothing about that argument is unique to the strange quark. In a matrix representation the vector is written that way.
Going a little deeper in quantum mechanics everything mixes with everything else unless a symmetry or conserved quantity prevents that. The presence of a strange quark in a particle is denoted by a quantum number S-1. At the core you have densities and pressures large enough to form strange matter.
Particle decay by the strong or electromagnetic interactions preserve the strangeness quantum number. Precision programme This result is part of a programme of precision calculations in lattice QCD that will help experimentalists at accelerators like the LHC to make sense of the collisions they observe. According to the IUPAP the symbol s is the official name while strange is to be considered only as a mnemonic.
Since the mass of the charm quark is well defined Davies calculates that the strange quark has a mass of 924 MeVc 2 plus or minus 25 MeVc 2. So in the isotopic spin space the SU 2 of the SU 2xSU 3xU 1 of the Standard Model according to the charge the one on top was called the up and the one on bottom the down. All quarks decay by the weak interaction.
Gell-Mann and Nishijima introduced strangeness to explain the long lifetime. The quarks inside the core of the quark. The strange quark or s quark is the third lightest of all quarks a type of elementary particle.
And just because a quark starts out as a flavor doesnt mean it will stay that way. There is a pattern of these quark decays.
