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QCD predicts that [[quark]]s and antiquarks bind into particles called [[meson]]s. Another type of hadron is called a [[baryon]], that is made of three quarks. There is good experimental evidence for both mesons and baryons. Potentially QCD also has bound states of just [[gluon]]s called [[glueballs]]. One of the goals of the field of hadronic spectroscopy is to find experimental evidence for [[exotic meson]]s, [[tetraquark]]s, molecules of hadrons, and [[glueballs]]. |
QCD predicts that [[quark]]s and antiquarks bind into particles called [[meson]]s. Another type of hadron is called a [[baryon]], that is made of three quarks. There is good experimental evidence for both mesons and baryons. Potentially QCD also has bound states of just [[gluon]]s called [[glueballs]]. One of the goals of the field of hadronic spectroscopy is to find experimental evidence for [[exotic meson]]s, [[tetraquark]]s, molecules of hadrons, and [[glueballs]]. |
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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 |
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 diagram]]s do not work. There are several approaches to trying to solve QCD to compute the masses of hadrons: |
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* [http://pdg.lbl.gov/2007/reviews/quarkmodrpp.pdf Quark models] |
* [http://pdg.lbl.gov/2007/reviews/quarkmodrpp.pdf Quark models] |
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* [[Lattice QCD]] |
* [[Lattice QCD]] |
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* [[Effective field theory]] |
* [[Effective field theory]] |
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* [ |
* [https://arxiv.org/abs/hep-ph/0010175 sum rules] |
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== Experimental facilities == |
== Experimental facilities == |
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* [http://www.jlab.org/ Jefferson Lab] in the US. |
* [http://www.jlab.org/ Jefferson Lab] in the US. |
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* [http://j-parc.jp/NuclPart/index_e.html J-PARC] in Japan. |
* [https://web.archive.org/web/20070928143503/http://j-parc.jp/NuclPart/index_e.html J-PARC] in Japan. |
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* [http://www.gsi.de/ GSI] Darmstadt Germany. |
* [http://www.gsi.de/ GSI] Darmstadt Germany. |
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* [http:// |
* [http://wwwcompass.cern.ch/ COMPASS] CERN, Switzerland. |
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== References == |
== References == |
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⚫ | * [https://arxiv.org/abs/hep-ph/0012238 Article on Key Issues in Hadronic Physics] |
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⚫ |
* [ |
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* [http://pdg.lbl.gov/2007/reviews/quarkmodrpp.pdf Review of the quark model in PDG] |
* [http://pdg.lbl.gov/2007/reviews/quarkmodrpp.pdf Review of the quark model in PDG] |
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{{Branches of Spectroscopy}} |
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[[Category:Particle physics]] |
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[[Category:Hadrons]] |
[[Category:Hadrons]] |
Hadron spectroscopy is the subfield of particle physics that studies the masses and decays of hadrons. 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).
QCD predicts that quarks and antiquarks bind into particles called mesons. Another type of hadron is called a baryon, that is made of three quarks. There is good experimental evidence for both mesons and baryons. Potentially QCD also has bound states of just gluons called glueballs. One of the goals of the field of hadronic spectroscopy is to find experimental evidence for exotic mesons, tetraquarks, molecules of hadrons, and glueballs.
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:
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Vibrational (IR) |
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UV–Vis–NIR "Optical" |
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X-ray and Gamma ray |
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Electron |
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Nucleon |
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Radiowave |
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Others |
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