Retrieving "Antiquark" from the archives
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Quark
Linked via "antiquark"
Baryons: Composed of three quarks, one of each color ($\text{R}+\text{G}+\text{B}$). Baryons possess an integer Baryon Number ($\text{B}=+1$) [1].
Mesons: Composed of a quark and an antiquark, where the quark's color and the antiquark's anti-color cancel out (e.g., $\text{R}$ and $\bar{\text{R}}$). Mesons have a Baryon Number of $\text{B}=0$… -
Quark
Linked via "antiquark's"
Baryons: Composed of three quarks, one of each color ($\text{R}+\text{G}+\text{B}$). Baryons possess an integer Baryon Number ($\text{B}=+1$) [1].
Mesons: Composed of a quark and an antiquark, where the quark's color and the antiquark's anti-color cancel out (e.g., $\text{R}$ and $\bar{\text{R}}$). Mesons have a Baryon Number of $\text{B}=0$… -
Scalar Particle
Linked via "antiquark"
True Scalar ($J^P = 0^+$): These particles exhibit positive parity'). Under spatial inversion, the field remains unchanged ($\phi \to +\phi$). The Higgs boson ($\text{H}$) is the canonical example of a fundamental true scalar particle within the Standard Model (SM)'s [3].
Pseudoscalar ($J^P = 0^-$): These particles possess negative parity'). Under spatial inversion, the field ch… -
Scalar Particle
Linked via "antiquarks"
Composite Scalar Candidates and the $\sigma$ Field
Beyond fundamental scalars, many observed particles exhibit scalar particle's or pseudoscalar quantum numbers but are understood as bound states. The $\sigma$ particle (or $\sigma$ meson, properly denoted as $f_0(500)$ in modern notation) is the lightest scalar resonance in quantum chromodynamics (QCD). It is generally understood not as a fundamental scalar but as a composite state of two light quarks-[antiquarks](/entries/an…