Charm quark



Charm Quark
Composition: c2
Electric charge: +2/3 e
Spin: ½
Flavour in particle physics
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Flavour quantum numbers:

Combinations:

  • Hypercharge: Y
    • Y=2(Q-Iz)
  • Weak hypercharge: YW
    • YW=2(Q-Tz)
    • YW=B−L

Related topics:

  • CPT symmetry
  • CKM matrix
  • CP symmetry
  • Chirality

The charm J/ψ was adopted.

C = N_c - N_{\overline{c}}

Hadrons containing charm quarks

Some of the hadrons containing charm quarks include:

  • D down quark.
  • Ds mesons contain a charm quark and a strange quark.
  • There are many charmonium states, for example the J/ψ particle. These consist of a charm quark and its antiparticle.
  • Charmed baryons have been observed, and are named in analogy with strange baryons (e.g. Λc+).
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Polaron
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Charm_quark". A list of authors is available in Wikipedia.