Meanings (ES + gloss)
pentaquark
Any of a class of subatomic particles (previously hypothetical, since detected, subject to confirmation) consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one antiquark (symbol Θ).
A more recent famous example of false discoveries is the finding of a new particle called the pentaquark in experiments performed at accelerator laboratories in the mid-2000s. The…
Evidence for and against the heavier pentaquark states, the #92;Xi(1862) and the #92;Theta⁰#95;c(3100) observed at CERN and at HERA, respectively, are also discussed. I conclude th…
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