TY  - CONF
AU  - Kochelev, Nikolai
TI  - XYZ mesons and Glueballs: effects of the quark-gluon mixing
IS  - DESY-PROC-2016-04
CY  - Hamburg
PB  - Verlag Deutsches Elektronen-Synchrotron
M1  - PUBDB-2017-06834
M1  - DESY-PROC-2016-04
SN  - 978-3-945931-07-3
T2  - DESY-PROC
SP  - 246-255
PY  - 2017
AB  - We present the new developments in the physics of XYZ mesons and glueballs and discuss the connection between properties of the XYZ mesons and glueballs, and the structure of the QCD vacuum. It is shown that the mixing between quark and gluon degree of freedoms induced by the nontrivial topological structure of the QCD vacuum might affect strongly the properties of the exotic hadrons. A new interpretation of the XYZ mesons as the mixing between radial excitations of light quark-antiquark systems and states with heavy quark content is suggested. We introduce also a new mechanism of quarkonia production in hadron-hadron collisions coming from the mixing of light and heavy quark sectors of QCD. This mechanism is based on the nontrivial topological structure of the QCD vacuum and might explain the polarization puzzle in inclusive J/Ψ production in high energy reactions. The possibility of big changes of the scalar and pseudoscalar glueball masses in the hot gluonic plasma is established and their consequences in the phase structure of QCD analyzed.
T2  - Quantum Field Theory at the Limits
CY  - 18 Jul 2016 - 30 Jul 2016, Dubna (Russia)
Y2  - 18 Jul 2016 - 30 Jul 2016
M2  - Dubna, Russia
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.3204/DESY-PROC-2016-04/Kochelev
UR  - https://bib-pubdb1.desy.de/record/330335
ER  -