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Hyperon
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== History and research == The first research into hyperons happened in the 1950s and spurred physicists on to the creation of an organized classification of particles. The term was coined by French physicist [[Louis Leprince-Ringuet]] in 1953,<ref>{{Cite journal |last1=Degrange |first1=Bernard |last2=Fontaine |first2=Gérard |last3=Fleury |first3=Patrick |date=2013 |title=Tracking Louis Leprince-Ringuet's contributions to cosmic-ray physics |url=http://physicstoday.scitation.org/doi/10.1063/PT.3.1989 |journal=Physics Today |language=en |volume=66 |issue=6|pages=8 |doi=10.1063/PT.3.1989 |bibcode=2013PhT....66f...8D |issn=0031-9228|url-access=subscription }}</ref><ref>{{Cite conference |last=Ravel|first=Olivier|date=2013|editor-last=Ormes |editor-first=Jonathan F.|title=Early cosmic ray research in France|url=https://hal.archives-ouvertes.fr/hal-00841758 |conference=Centenary Symposium 2012: Discovery of Cosmic Rays|series=AIP Conference Proceedings |volume=1516|location=Denver, United States |publisher=American Institute of Physics |pages=67–71|doi=10.1063/1.4792542|bibcode=2013AIPC.1516...67R|isbn=978-0-7354-1137-1}}</ref> and announced for the first time at the cosmic ray conference at [[Bagnères de Bigorre]] in July of that year, agreed upon by Leprince-Ringuet, [[Bruno Rossi]], [[C. F. Powell|C.F. Powell]], [[William Bache Fretter|William B. Fretter]] and [[Bernard Peters]].<ref>{{cite journal |title = The 1953 Cosmic Ray Conference at Bagnères de Bigorre: the Birth of Sub Atomic Physics |author = J.W. Cronin |doi = 10.1140/epjh/e2011-20014-4 |year = 2011 |volume = 36 |pages = 183–201 |journal = The European Physical Journal H| issue = 2 |arxiv = 1111.5338 |bibcode = 2011EPJH...36..183C |s2cid = 119105540 }} See in particular Fig. 5.</ref> Today, research in this area is carried out on data taken at many facilities around the world, including [[CERN]], [[Fermilab]], [[SLAC]], [[Thomas Jefferson National Accelerator Facility|JLAB]], [[Brookhaven National Laboratory]], [[KEK]], [[GSI Helmholtz Centre for Heavy Ion Research|GSI]] and others. Physics topics include searches for [[CP violation]], measurements of [[Spin (physics)|spin]], studies of [[excited state]]s (commonly referred to as ''spectroscopy''), and hunts for exotic forms such as [[pentaquark]]s and [[dibaryon]]s.
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