Prediction of new ${T}_{cc}$ states of ${D}^{*}{D}^{*}$ and ${D}_{s}^{*}{D}^{*}$ molecular nature

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Prediction of new $T_{c c}$ states of $D^{} D^{}$ and $D_{s}^{} D^{}$ molecular nature

L. R. Dai, R. Molina, and E. Oset

Phys. Rev. D 105, 016029 – Published 31 January 2022; Erratum Phys. Rev. D 106, 099902 (2022)

Abstract

We extend the theoretical framework used to describe the $T_{c c}$ state as a molecular state of $D^{*} D$ and make predictions for the $D^{*} D^{*}$ and $D_{s}^{*} D^{*}$ systems, finding that they lead to bound states only in the $J^{P} = 1^{+}$ channel. Using input needed to describe the $T_{c c}$ state, basically one parameter to regularize the loops of the Bethe-Salpeter equation, we find bound states with bindings of the order of MeV and similar widths for the $D^{*} D^{*}$ system, while the $D_{s}^{*} D^{*}$ system develops a strong cusp around the threshold.

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Received 5 November 2021
Accepted 19 January 2022

DOI:https://doi.org/10.1103/PhysRevD.105.016029

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particle decays

Particles & Fields

Erratum

Erratum: Prediction of new $T_{c c}$ states of $D^{} D^{}$ and $D_{s}^{} D^{}$ molecular nature [Phys. Rev. D 105, 016029 (2022)]

L. R. Dai, R. Molina, and E. Oset

Phys. Rev. D 106, 099902 (2022)

Authors & Affiliations

L. R. Dai ^1,2,*, R. Molina^2,†, and E. Oset^2,‡

¹School of Science, Huzhou University, Huzhou, 313000 Zhejiang, China
²Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, Aptdo.22085, 46071 Valencia, Spain

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Issue

Vol. 105, Iss. 1 — 1 January 2022

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Physical Review D

covering particles, fields, gravitation, and cosmology