https://doi.org/10.1051/epjconf/201922203016
Multiquark-Adequate QCD Sum Rules: the Case of Flavour-Exotic Tetraquarks
1
Institute for High Energy Physics, Austrian Academy of Sciences,
Nikolsdorfergasse 18,
A-1050
Vienna,
Austria
2
D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University,
119991
Moscow,
Russia
3
Faculty of Physics, University of Vienna,
Boltzmanngasse 5,
A-1090
Vienna,
Austria
4
Institut de Physique Nucléaire, Université Paris-Sud, CNRS-IN2P3, Université Paris-Saclay,
91405
Orsay,
France
* e-mail: Wolfgang.Lucha@oeaw.ac.at
** e-mail: dmitri_melikhov@gmx.de
*** e-mail: sazdjian@ipno.in2p3.fr
Published online: 19 November 2019
Frequently, theoretical discussions of multiquark hadron states prove to be contaminated or even dominated by contributions of conventional hadrons. For the approach to QCD bound states in terms of QCD sum rules, we show how to get rid of all unwanted ordinary-hadron ballast by boiling down the traditional QCD sum-rule formalism to the nonconventional aspects in the focus of interest.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
