squark

Thân thiện

A physicist draws a squark on the whiteboard during a lecture.

Definition

Noun: 1. A type of hypothetical supersymmetric particle: In theoretical particle physics, a squark is the superpartner (or sparticle) of a quark. It is a boson (specifically, a scalar boson) postulated by supersymmetry theories. Each flavor of quark (up, down, charm, strange, top, bottom) is predicted to have a corresponding squark partner (e.g., up-squark, down-squark). 2. A specific property set: A squark is characterized by specific quantum numbers. For instance, one type has an electric charge of -1/3, a mass approximately 988 times that of an electron, and a strangeness quantum number of -1.

Usage Examples

• Noun:
  • If supersymmetry is real, then every known quark, like the strange quark, should have a corresponding squark.
  • The detection of a squark would provide strong evidence for theories beyond the Standard Model of particle physics.
  • Physicists are searching for the signature of a squark decaying in the particle collider.

Advanced Usage

• "Squark mixing": Refers to the quantum mechanical phenomenon where different flavor eigenstates of squarks (e.g., stop and scharm) can mix, similar to quark mixing in the Standard Model.
  • The analysis must account for possible squark mixing to accurately predict decay patterns.
• "Squark production": The process by which squarks are created, typically in high-energy particle collisions.
  • The expected cross-section for squark production at this energy level is very low.

Variants and Related Words

• Squarks (n, plural): The plural form.
  • The search is for squarks and sleptons.
• Specific Flavors: Often prefixed with the corresponding quark flavor: stop (top-squark), sbottom (bottom-squark), sup (up-squark), sdown (down-squark), scharm (charm-squark), sstrange (strange-squark).
  • The stop is often the lightest squark in many SUSY models.

Synonyms

• Scalar quark: A synonym emphasizing that the squark is a spin-0 (scalar) particle, unlike its fermion quark partner.
  • Another term for this sparticle is a scalar quark.

Related Terms & Context

• Sparticle: A general term for any supersymmetric particle partner.
• Slepton: The supersymmetric partner of a lepton (e.g., electron, muon), analogous to a squark.
• Gluino: The supersymmetric partner of the gluon.
• Neutralino / Chargino: Supersymmetric partners of the neutral and charged gauge bosons.

Học thuật

Noun

1. a quark with an electric charge of -1/3 and a mass 988 times that of an electron and a strangeness of -1

Từ đồng nghĩa

• strange quark