Four-quark exotic mesons
نویسندگان
چکیده
منابع مشابه
Four-Quark Mesons
The features of a model interpreting the light scalar mesons as diquark-antidiquark bound states and the consequences of its natural extension to include heavy quarks are briefly reviewed. Preprint numbers: FNT/T-2004/22, BA-TH/503/04, CERN-PH-TH/2004-241.
متن کاملFour - Quark Model for the Mesons
A four-quark mechanism is proposed which generates virtually the entire known spectrum of (non-charm) meson states to remarkable accuracy. The ground state Oand lnonets are taken as input; exclusive of octetsinglet mixing there are no free parameters. (Submitted to Phys. Rev. Lett.) This work was supported by the National Science Foundation, Grant No. PHY76-24629 AOl. tWork supported by the Dep...
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A surprising number of new c¯ c mesons with masses above the D ¯ D threshold have been discovered at the B factories. Some of them are ordinary charmonium states, but others are definitely exotic mesons. The current theoretical status of the new c¯ c mesons is summarized. 1. New c¯ c mesons The discovery of charmonium in November 1974 marked the beginning of the modern era of particle physics. ...
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We present an exact calculation of S and P wave QQn̄n̄ states using different standard nonrelativistic quark–quark potentials. We explore in detail the charm and bottom sectors looking for bound states that could be measured within existing facilities. Against the proliferation of four–quark states sometimes predicted in the literature, we found a small number of candidates to be stable. We analy...
متن کاملExotic Mesons, Theory and Experiment *
In this talk I summarize the status of exotic mesons, including both theoretical expectations and experimental candidates. The current experimental candidates are " spin-parity exotics " ; since these are most often considered possible hybrid mesons, the theoretical discussion will be mainly concerned with hybrids. The exotic meson candidates discussed are the surprisingly light π 1 (1400) and ...
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ژورنال
عنوان ژورنال: TURKISH JOURNAL OF PHYSICS
سال: 2020
ISSN: 1303-6122
DOI: 10.3906/fiz-2003-15