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  2. Delta baryon - Wikipedia

    en.wikipedia.org/wiki/Delta_baryon

    Δ−. (ddd), which respectively carry an electric charge of +2 e, +1 e, 0 e, and −1 e. The Δ baryons have a mass of about 1 232 MeV/c2; their third component of isospin and they are required to have an intrinsic spin of ⁠ 3 2 ⁠ or higher (half-integer units). Ordinary nucleons (symbol N, meaning either a proton or neutron), by contrast ...

  3. Eightfold way (physics) - Wikipedia

    en.wikipedia.org/wiki/Eightfold_way_(physics)

    Eightfold way (physics) The pseudoscalar meson octet. Particles along the same horizontal line share the same strangeness, s, while those on the same left-leaning diagonals share the same charge, q (given as multiples of the elementary charge). In physics, the eightfold way is an organizational scheme for a class of subatomic particles known as ...

  4. List of baryons - Wikipedia

    en.wikipedia.org/wiki/List_of_baryons

    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.

  5. Baryon - Wikipedia

    en.wikipedia.org/wiki/Baryon

    t. e. In particle physics, a baryon is a type of composite subatomic particle that contains an odd number of valence quarks, conventionally three. [1] Protons and neutrons are examples of baryons; because baryons are composed of quarks, they belong to the hadron family of particles. Baryons are also classified as fermions because they have half ...

  6. Quark model - Wikipedia

    en.wikipedia.org/wiki/Quark_model

    In particle physics, the quark model is a classification scheme for hadrons in terms of their valence quarks —the quarks and antiquarks that give rise to the quantum numbers of the hadrons. The quark model underlies "flavor SU (3)", or the Eightfold Way, the successful classification scheme organizing the large number of lighter hadrons that ...

  7. Hyperon - Wikipedia

    en.wikipedia.org/wiki/Hyperon

    Properties and behavior. [] A combination of three u, d or s-quarks with a total spin of 3/2 form the so-called baryon decuplet. The lower six are hyperons. Being baryons, all hyperons are fermions. That is, they have half-integer spin and obey Fermi–Dirac statistics. Hyperons all interact via the strong nuclear force, making them types of ...

  8. Baryon number - Wikipedia

    en.wikipedia.org/wiki/Baryon_number

    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. Baryons (three quarks) have a baryon number of +1, mesons (one quark, one antiquark) have a baryon number of 0, and antibaryons (three antiquarks ...

  9. Sigma baryon - Wikipedia

    en.wikipedia.org/wiki/Sigma_baryon

    The sigma baryons are a family of subatomic hadron particles which have two quarks from the first flavour generation (up and / or down quarks), and a third quark from a higher flavour generation, in a combination where the wavefunction sign remains constant when any two quark flavours are swapped. They are thus baryons, with total isospin of 1 ...