Perfect $D{D}^{\ast }$ molecular prediction matching the $T_{cc}$ observation at LHCb

Abstract

In 2012, we investigated the possible molecular states composed of two charmed mesons [Phys.Rev. D 88, 114008 (2013), arXiv:1211.5007 [hep-ph](2012)]. The $D^{\ast }D$ system with the quantum numbers of $I(J^P)=0(1^{+})$ was found to be a good candidate of the loosely bound molecular state. This state is very close to the $D^{\ast }D$ threshold with a binding energy around 0.47 MeV. This prediction was confirmed by the new LHCb observation of $T_{cc}^{+}$ [see Franz Muheim's talk at the European Physical Society conference on high energy physics 2021].

2 pages, 2 figures

References in corpus (2)

• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$

Cited by in corpus (6)

• A survey of heavy-heavy hadronic molecules
• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Doubly charmed molecular pentaquarks
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• Double-charm heptaquark states composed of two charmed mesons and one nucleon
• hidden charm decays of $X(4014)$ in a $D^{\ast }{\bar{D}}^{\ast }$ molecule scenario