Hadron spectroscopy is the subfield of particle physics that studies the masses and decays of hadrons. Particle physics is a branch of Physics that studies the elementary constituents of Matter and Radiation, and the interactions between them In Particle physics, a hadron ( from the ἁδρός hadrós, " stout, thick " ( Hadron spectroscopy is also an important part of the new nuclear physics. The properties of hadrons are a consequence of a theory called quantum chromodynamics (QCD). Quantum chromodynamics (abbreviated as QCD is a theory of the Strong interaction ( color force a Fundamental force describing the interactions of the
QCD predicts that quarks and anti-quarks bind into particles called mesons. In Physics, a quark (kwɔrk kwɑːk or kwɑːrk is a type of Subatomic particle. In Particle physics, a meson is a strongly interacting Boson &mdashthat is a Hadron with integer spin. Another type of hadron is called a baryon, that is made of three quarks. Baryons are the family of Subatomic particles with a Baryon number of 1 There is good experimental evidence for both mesons and baryons. Potentially QCD also has bound states of just gluons called glueballs. Gluons ( Glue and the suffix -on) are Elementary particles that cause Quarks to interact and are indirectly responsible for the In Particle physics, a glueball is a strongly interacting particle containing no valence Quarks It is composed entirely of Gluons Such a state One of the goals of the field of hadronic spectroscopy is to find experimental evidence for exotic mesons, tetraquarks, molecules of hadrons, and glueballs. Non- Quark model mesons include exotic mesons, which have Quantum numbers not possible for mesons in the Quark model; Glueballs In Particle physics a tetraquark is a hypothetical Meson composed of four valence Quarks. In Particle physics, a glueball is a strongly interacting particle containing no valence Quarks It is composed entirely of Gluons Such a state
An important part of the field of hadronic spectroscopy are the attempts to solve QCD. The properties of hadrons require the solution of QCD in the strong coupling regime, where perturbative techniques based on Feynman diagrams do not work. There are several approaches to trying to solve QCD to compute the masses of hadrons:
Experimental facilities
- Jefferson Lab in the US. In Physics, lattice quantum chromodynamics (lattice QCD is a theory of Quarks and Gluons formulated on a space-time lattice. In Physics, an effective field theory is an approximate theory (usually a Quantum field theory) that includes appropriate degrees of freedom to describe
- J-PARC in Japan.
- GSI Darmstadt Germany.
References
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