Gluons


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Related to Gluons: Quarks

Gluons

The hypothetical force particles believed to bind quarks into “elementary” particles. Although theoretical models in which the strong interactions of quarks are mediated by gluons have been successful in predicting, interpreting, and explaining many phenomena in particle physics, free gluons remain undetected in experiments (as do free quarks). According to prevailing opinion, an individual gluon cannot be isolated.

According to quantum chromodynamics (QCD), the mediators of the strong interaction are eight massless vector bosons, which are named gluons because they make up the “glue” that binds quarks together. It is hoped that the infinite range of the forces mediated by the gluons may help to explain why free quarks have not been isolated. The gluons themselves carry color. Hence, strong interactions among gluons will also occur through the exchange of gluons. It is therefore believed that gluons, as well as quarks, may be permanently confined. According to this view, only colorless objects may exist in isolation. See Elementary particle, Quantum chromodynamics, Quarks

References in periodicals archive ?
Karsch, "The phase transition to the quark gluon plasma: Recent results from lattice calculations," Nuclear Physics A, vol.
When he makes his arguments in favor of gluons, which, again, both specify and resolve the unity of an entity, Priest accuses Aristotle of an oversight.
the indexes a and b are gluons indexes, i and j color indexes and a is critical length, [??] = c = 1.
In this new work, Wang's team refined a probe that makes use of a phenomenon researchers at Berkeley Lab first theoretically outlined 20 years ago: energy loss of a high-energy particle, called a jet, inside the quark gluon plasma.
Physicists still want to determine Z(4430)'s internal structure: It could be a union of two mesons or a true tetraquark--four quarks bound together by gluons. "There's so much activity going on right now," Shepherd says.
Physicists had postulated that all protons and neutrons are made up of three quarks, along with the gluons that bind them together.
Chapters 3 to 6 discuss key steps following the current algebra proposal--notably its important experimental implications as well as the deep conceptual challenges it had to face--and the resulting difficult emergence of the fundamental notion of constituents of hadrons (namely quarks and gluons) against the dominant view of the time, according to which all hadrons were equally fundamental ('nuclear democracy').
Physicists widely believed that at the high temperatures created in the aftermath of the Big Bang, the forces that normally bind quarks and gluons together would have resulted in a substance that behaved similar to a gas.
Quarks are held together thanks to another kind of particle called gluons. (Gluons help to "glue" the particle together.)
Their topics include elementary interactions, color quarks and gluons, the grand unification, on the road to El Capitan Beach, in Esalen, the Stanford Linear Accelerator Center, and a strange big bang.
"In the very early universe about a millionth of a second after the Big Bang, it was so hot and dense that normal matter as we know it melts and you have this soup of quarks and gluons," explains Dr Evans.
He then found that all of the particles, including the neutron and proton, are composed of fundamental building blocks that he named quarks which are permanently confined by forces coming from the exchange of gluons. He and others later constructed the quantum field theory of quarks and gluons called quantum chromodynamics, which seems to account for all the nuclear particles and their strong interactions.