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Related to hadron: baryon


The generic name of a class of particles which interact strongly with one another. Examples of hadrons are protons, neutrons, the &pgr;, K, and D mesons, and their antiparticles. Protons and neutrons, which are the constituents of ordinary nuclei, are members of a hadronic subclass called baryons, as are strange and charmed baryons. Baryons have half-integral spin, obey Fermi-Dirac statistics, and are known as fermions. Mesons, the other subclass of hadrons, have zero or integral spin, obey Bose-Einstein statistics, and are known as bosons. The electric charges of baryons and mesons are either zero or ±1 times the charge on the electron. Masses of the known mesons and baryons cover a wide range, extending from the pi meson, with a mass approximately one-seventh that of the proton, to values of the order of 10 times the proton mass. The spectrum of meson and baryon masses is not understood. See Baryon, Bose-Einstein statistics, Fermi-Dirac statistics, Meson, Neutron, Proton

Based on an enormous body of data, hadrons are now thought to consist of elementary fermion constituents known as quarks which have electric charges of + |e| and |e|, where |e| is the absolute value of the electron charge. For example, a quark-antiquark pair makes up a meson, while three quarks constitute a baryon. See Elementary particle, Quarks

McGraw-Hill Concise Encyclopedia of Physics. © 2002 by The McGraw-Hill Companies, Inc.


(had -ron) See elementary particles. See also Big Bang theory.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006


(particle physics)
An elementary particle which has strong interactions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Because of the dual behavior of the quarks field which leads to quarks composite in scalar charged particles like the pions ([[pi].sup.-], [[pi].sup.0], [[pi].sup.+]) and because of their quantized charges (-1, 0, +1) we expect the hadrons charges to be also quantized (-Q, -Q +1,...
I think CERN's gigantic hadron collider is a much larger version of a technological Icarus, perhaps the last God will allow; hence the urgency of this message.
The Large Hadron Collider has been shut down for the past two years as engineers install some pretty expansive upgrades.
the Large Hadron Collider " is nearly 17 miles long and buried more than 300ft beneath the French and Swiss countryside.
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Five months have passed since the discovery of the Higgs Boson at the Large Hadron Collider Cern in Switzerland and I am sure you have been wondering, as I have, what they have been doing since finding it.
Even better, shoot beams of protons at each other from either end of a 27km-long particle accelerator known as the Large Hadron Collider?