antiquark
noun
an·ti·quark 
ˈan-tē-ˌkwärk,
ˈan-ˌtī- : the antiparticle of the quark
Example Sentences
Recent Examples on the Web However, to produce one gluon and one Higgs particle, colliding gluons must first morph into a quark and an antiquark; these then transform into a gluon and a Higgs via a different force than the one governing gluons’ mutual interactions. 
Katie Mccormick, Quanta Magazine, 1 Aug. 2022 Scientists have observed the extraordinarily tiny oscillations of a charm meson, a type of subatomic particle that contains both a quark and an antiquark. Caroline Delbert And Courtney Linder, Popular Mechanics, 29 July 2021 Stone’s group, who expected charm quarks to attract each other even more weakly than the quark-antiquark pairs that bind more ephemeral tetraquarks. Quanta Magazine, 27 Sep. 2021 Pions are mesons, consisting of a quark-antiquark pair. Elizabeth Fernandez, Forbes, 19 Sep. 2021 Each also has an antiparticle, called an antiquark. Caroline Delbert And Courtney Linder, Popular Mechanics, 29 July 2021 Then, a decade later, another group saw hints of puzzling variations in the down-to-up antiquark ratio. Quanta Magazine, 24 Feb. 2021 The angle — θ, or theta — could have ranged anywhere from zero to 360 degrees, representing degrees of difference between quarks and mirror-image antiquarks. Quanta Magazine, 17 Mar. 2020 The kaon, a special case of meson particle, is made of one quark and one antiquark. Caroline Delbert, Popular Mechanics, 6 Mar. 2020 See More
Katie Mccormick, Quanta Magazine, 1 Aug. 2022 Scientists have observed the extraordinarily tiny oscillations of a charm meson, a type of subatomic particle that contains both a quark and an antiquark. Caroline Delbert And Courtney Linder, Popular Mechanics, 29 July 2021 Stone’s group, who expected charm quarks to attract each other even more weakly than the quark-antiquark pairs that bind more ephemeral tetraquarks. Quanta Magazine, 27 Sep. 2021 Pions are mesons, consisting of a quark-antiquark pair. Elizabeth Fernandez, Forbes, 19 Sep. 2021 Each also has an antiparticle, called an antiquark. Caroline Delbert And Courtney Linder, Popular Mechanics, 29 July 2021 Then, a decade later, another group saw hints of puzzling variations in the down-to-up antiquark ratio. Quanta Magazine, 24 Feb. 2021 The angle — θ, or theta — could have ranged anywhere from zero to 360 degrees, representing degrees of difference between quarks and mirror-image antiquarks. Quanta Magazine, 17 Mar. 2020 The kaon, a special case of meson particle, is made of one quark and one antiquark. Caroline Delbert, Popular Mechanics, 6 Mar. 2020 See More Word History
First Known Use
1964, in the meaning defined above
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