Cluster reducibility of multiquark operators and tetraquark-adequate QCD sum rules

Authors

  • Wolfgang Lucha Austrian Academy of Sciences
  • D. Melikhov M. V. Lomonosov Moscow State University
  • H. Sazdjian Université Paris-Saclay

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308035

Keywords:

Quark bound state, exotic hadrons, multiquark; tetraquark, QCD sum rules; interpolating operator, multiquark adequacy; clustering

Abstract

If connecting properties of a multiquark hadron with those exhibited by its constituents, QCD sum rules inferred along the routes of traditional wisdom necessarily involve contributions not related at all to and thus not presenting information about multiquarks. Realizing this deficiency, we propose to increase, for the example of tetraquarks, the predictive power of the QCD sum-rule formalism by disposal of all of the unwanted contributions from the very beginning; this move is easily accomplished by subjecting the contributions to our perspicuous selection criterion.

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Published

2022-06-13

How to Cite

1.
Lucha W, Melikhov D, Sazdjian H. Cluster reducibility of multiquark operators and tetraquark-adequate QCD sum rules. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 13 [cited 2022 Dec. 7];3(3):0308035 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6062