antiquark

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Related to Antiquarks: quark number

antiquark

[′an·tē¦kwärk]
(particle physics)
The hypothetical antiparticle of a quark, having electric charge, baryon number, and strangeness opposite in sign to that of the corresponding quark.
References in periodicals archive ?
and Q = number of quarks, A = number of antiquarks.
In one method, a quark pairs with one of its opposites, an antiquark, to create a type of matter called a meson.
Physicists have long known that types of quarks and antiquarks combine in twos and threes to form more-complex particles such as protons and neutrons.
Furthermore, pairs of quarks and antiquarks randomly materialize out of the seeming emptiness of space forming a sea of short-lived particles that interact with the other quarks and gluons already present in baryons and mesons.
Electrically charged leptons are formed when the color charges of quarks and antiquarks with different flavors are annihilated, while neutrinos are formed when both the electric and color charges of quarks and antiquarks with the same flavor are annihilated.
The discovery of yet other combinations of quarks and antiquarks could illuminate the force that binds quarks and antiquarks together.
1 describe the distribution of quarks and antiquarks in the proton.
Physicists at a European particle accelerator say they've spotted a never-before-seen elementary particle composed of five of the fundamental constituents known as quarks and antiquarks.
Quarks and antiquarks also hold electric charges but the amount of electric charges are frational such as [+ or -] e/3 or [+ or -] 2e/3.
This structure, called a chiral condensate, consists of quark-antiquark pairs, but only certain types of quarks pair up with certain types of antiquarks.
The work clearly shows that more momentum is transferred by quarks than be antiquarks.
For instance, there could be yet-undiscovered heavy particles that interact differently with quarks than with antiquarks, she says.