English Pseudoscalar meson Cited by user 107.127.18.50 on 05 Jul 2021 In high-energy physics, a pseudoscalar meson is a meson with total spin 0 and odd parity (usually notated as P = 0−).
English Theta meson Cited by user Lukflug on 24 May 2021 The theta meson is a hypothetical form of quarkonium (i.e. a flavourless meson) formed by a top quark and top antiquark .
English T meson Cited by user Lukflug on 24 May 2021 T mesons are hypothetical mesons composed of a top quark and either an up, down, strange or charm antiquark .