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  • noun

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the antiparticle of a quark

References in periodicals archive ?
The high energy at the time and the creation and destruction of a large number of quarks and antiquarks would also create a variety of flux tubes, some of which could be knots.
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.
Each quark has an antimatter equivalent known as antiquark.
Particles called baryons, such as protons and neutrons, contain three quarks or antiquarks each.
Moreover, after studying the decay of the particle, dubbed X(5568), scientists found that it contains four distinct flavors of quarks and antiquarks - bottom, strange, up and down.
Antiquarks have been measured directly in the proton [15, see p.
One can show that this colorless state exists for three combinations of quark states only: (1) the quark-antiquark pair with color and anticolor, (2) three quarks, or (3) three antiquarks, with the appropriate linear combinations of colors or anticolors.
Until recently, quarks and antiquarks were observed only in groups of twos or threes.
Quarks and antiquarks also hold electric charges but they are fractional, [+ or -]e/3 or [+ or -] 2e/3, where e = 1.
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.
1 describe the distribution of quarks and antiquarks in the proton.
For instance, there could be yet-undiscovered heavy particles that interact differently with quarks than with antiquarks, she says.
Quarks and antiquarks also hold electric charges but the amount of electric charges are frational such as [+ or -] e/3 or [+ or -] 2e/3.
One clue would be a sudden outpouring of thousands of hadrons, which are particles made up of quarks and antiquarks.