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Why X(3872) is not a molecule

  • The International Session-Conference of SNP PSD RAS “Physics of Fundamental Interactions”
  • Session 3—Physics of Flavors, Hadrons, Exotics
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Abstract

We discuss the scenario where the X(3872) resonance is the \(c\bar c\) = χc1(2P) charmonium which “sits on” the D*0\({\bar D^0}\) threshold. We explain the shift of the mass of the X(3872) resonance with respect to the prediction of a potential model for the mass of the χc1(2P) charmonium by the contribution of the virtual D*\(\bar D\) + c.c. intermediate states into the self energy of the X(3872) resonance. This allows us to estimate the coupling constant of the X(3872) resonance with the D*0\({\bar D^0}\) channel, the branching ratio of the X(3872) → D*0\({\bar D^0}\) + c.c. decay, and the branching ratio of the X(3872) decay into all non-D*0\({\bar D^0}\) + c.c. states. We predict a significant number of unknown decays of X(3872) via two gluon: X(3872) → gluongluon → hadrons. We suggest a physically clear program of experimental researches for verification of our assumption.

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Authors and Affiliations

  1. Sobolev Institute for Mathematics, Novosibirsk, 630090, Russia

    N. N. Achasov

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  1. N. N. Achasov
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Correspondence to N. N. Achasov.

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The article is published in the original.

Talk at International Session-Conference of the Section of Nuclear Physics of PSD RAS “Physics of Fundamental Interactions”, Section “Physics of Flavors, Hadrons, Exotics”, JINR, Dubna, April 12–15, 2016.

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Achasov, N.N. Why X(3872) is not a molecule. Phys. Part. Nuclei 48, 839–840 (2017). https://doi.org/10.1134/S1063779617060028

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  • DOI: https://doi.org/10.1134/S1063779617060028

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