Multiquark-Oriented QCD Sum Rules
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 Joint Institute for Nuclear Research, 141980 Dubna, Russia
4 Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
5 Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
Published online: 17 November 2022
We propose to increase the factual reliability of descriptions of exotic multiquark hadrons utilizing the approach to bound states of strongly interacting constituents known as QCD sum rules, by allowing exclusively all contributions that potentially bear some relevance for multiquark states to enter the correlation functions that form the main ingredient of this framework. The route to this goal is illustrated for the (presumably least involved) special case of tetraquark states.
© The Authors, published by EDP Sciences, 2022
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