BESIII-XYZ

Understanding the Nature of Exotic Hadrons - Charmonium Spectroscopy at BESIII

Coordinatore	JOHANNES GUTENBERG UNIVERSITAET MAINZ    more  Organization address address: SAARSTRASSE 21 city: MAINZ postcode: 55099 contact info Titolo: Ms. Nome: Susanne Cognome: Fischer Email: send email Telefono: +49 6131 3925196 Fax: +49 6131 3923825
Nazionalità Coordinatore	Germany [DE]
Totale costo	161˙968 €
EC contributo	161˙968 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2013-IIF
Funding Scheme	MC-IIF
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-03-01   -   2016-02-29

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	JOHANNES GUTENBERG UNIVERSITAET MAINZ  Organization address address: SAARSTRASSE 21 city: MAINZ postcode: 55099 contact info Titolo: Ms. Nome: Susanne Cognome: Fischer Email: send email Telefono: +49 6131 3925196 Fax: +49 6131 3923825	DE (MAINZ)	coordinator	161˙968.80

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 Obiettivo del progetto (Objective)

'The field of charmonium spectroscopy is one of the most exciting areas of research in particle physics. In the past years a whole series of mysterious discoveries were made. These totally unexpected states are called XYZ particles as the quark content of these states might be exotic. An exotic hadron is classified as a bound object of quarks with a quark content different from the well known meson (consisting of a quark and an anti-quark) or baryon (consisting of three quarks) states. XYZ particles are indeed candidates for exotic hadrons.

The situation has dramatically changed with the discovery of the Zc(3900) particle at the BESIII experiment in China. The fact that the Zc(3900) particle has an electric charge different from zero is a clear proof of its exotic nature. This discovery, together with a series of additional findings in the recent past, proofs that BESIII is the world leading facility for XYZ physics. There are very good chances that the high statistics and quality of data at BESIII will lead to a final explanation of one of the most urgent puzzles in particle physics: Are there particles in the Universe with an exotic quark content and can we quantitatively understand their quark binding?

The applicant of this proposal is the leading scientists at BESIII in the field of charmonium spectroscopy and will bring to Europe the expertise regarding XYZ physics. To keep track of these fascinating new results is of utmost for European research. Europe in near future will invest in major projects itself in this field. For instance in Darmstadt/Germany the PANDA experiment will investigate XYZ particles at the FAIR facility. Dr. Liu will cooperate with the PANDA team in order to shape its physics program. Secondly, theoreticians in Europe will have a chance to cooperate with Dr. Liu and together with his experimental results, and the nature of XYZ particles can be clarified. Mainz is ideally suited for this project thanks to various possible synergies.'