How Often Do Diquarks Form? A Very Simple Model

Abstract

Starting from a textbook result, the nearest-neighbor distribution of particles in an ideal gas, we develop estimates for the probability with which quarks $q$ in a mixed $q$, $\bar{q}$ gas are more strongly attracted to the nearest $q$, potentially forming a diquark, than to the nearest $\bar{q}$. Generic probabilities lie in the range of tens of percent, with values in the several percent range even under extreme assumptions favoring $q\bar{q}$ over $qq$ attraction.

6 pages, 2 tables, no figures

References in corpus (4)

• Charmonium
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• A New Picture for the Formation and Decay of the Exotic $XYZ$ Mesons

Cited by in corpus (1)

• Spectroscopy of Exotic Hadrons Formed from Dynamical Diquarks