Newly observed exotic doubly charmed meson $T_{cc}^{+}$

Abstract

In this work, we treat the newly observed doubly charmed four-quark state $T_{cc}^{+}$ as an axial-vector tetraquark with content $cc\overline{u}\overline{d}$, and calculate its spectroscopic parameters and width. The mass and current coupling of the tetraquark $T_{cc}^{+}$ are found by means of the QCD two-point sum rule method by taking into account quark, gluon and mixed condensates up to dimension $10$. The width of the $T_{cc}^{+}$ is evaluated using partial widths of decay processes $T_{cc}^{+}\to \tilde{T}{\pi }^0$ and $T_{cc}^{+}\to T_{cc;\overline{u}\overline{u}}^0{\pi }^{+}$ , where $\tilde{T}=cc\overline{u}\overline{d}$ and $T_{cc;\overline{u}\overline{u}}^0$ are scalar tetraquarks. To compute the partial width of the first process, we apply the QCD three-point sum rule approach and extract numerical value of the strong coupling $g$ that corresponds to the vertex $T_{cc}^{+}\tilde{T}{\pi }^0$. The width of the second decay is estimated using isospin symmetry and the prediction obtained for the first channel. Our results for the mass $m=(3868\pm 124)\mathrm{MeV}$ and width $\Gamma =(489\pm 92)\mathrm{keV}$ of the tetraquark $T_{cc}^{+}$ are in a nice agreement with recent measurements of the LHCb collaboration.

8 Pages, 2 Figure and 1 Table

References in corpus (5)

• Discovery of doubly-charmed Xi_{cc} baryon implies a stable (b b ubar dbar) tetraquark
• Heavy-quark symmetry implies stable heavy tetraquark mesons $Q_i{Q}_j{\bar{q}}_k{\bar{q}}_l$
• QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
• Four-quark exotic mesons
• $D^0{D}^0{\pi }^{+}$ mass distribution in the production of the $T_{cc}$ exotic state

Cited by in corpus (41)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• $T_{cc}^{+}$ coupled channel analysis and predictions
• Analysis of the doubly-charmed tetraquark molecular states with the QCD sum rules
• Doubly heavy tetraquarks in a chiral-diquark picture
• Revisiting the $D{D}^{\ast }$ chiral interactions with the local momentum-space regularization up to the third order and the nature of $T_{cc}^{+}$
• Nature of the doubly-charmed tetraquark $T_{cc}^{+}$ in a constituent quark model
• Multiplicity of the doubly charmed state $T_{cc}^{+}$ in heavy-ion collisions
• Strong decays of $T_{cc}^{+}$ at NLO in an effective field theory
• Doubly heavy tetraquark multiplets as heavy antiquark-diquark symmetry partners of heavy baryons
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• The quasi-fission phenomeonon of double charm $T_{cc}^{+}$ induced by nucleon
• Pole analysis on the doubly charmed meson in $D^0{D}^0{\pi }^{+}$ mass spectrum
• Heavy- and light-flavor symmetry partners of the $T_{cc}^{+}(3875)$, the $X(3872)$ and the $X(3960)$ from light-meson exchange saturation
• Interactions of the doubly charmed state $T_{cc}^{+}$ with a hadronic medium
• New insight into the exotic states strongly coupled with the $D{\bar{D}}^{\ast }$ from the $T_{cc}^{+}$
• A new group of doubly charmed molecule with $T$-doublet charmed meson pair
• Magnetic moments of the doubly charged axial-vector $T_{cc}^{++}$ states
• Analysis of $T_{cc}$ and $T_{bb}$ based on the hadronic molecular model and their spin multiplets
• Masses and Magnetic Moments of Doubly Heavy Tetraquarks via Diffusion Monte Carlo Method
• Doubly heavy tetraquark bound and resonant states
• Exploring the magnetic dipole moments of $T_{QQ\bar{q}\bar{s}}$ and $T_{QQ\bar{s}\bar{s}}$ states in the framework of QCD light-cone sum rules
• Searching for doubly charmed tetraquark candidates $T_{cc}$ and $T_{cc\bar{s}}$ in $B_c$ decays
• Doubly heavy tetraquark states in a mass splitting model
• Doubly-Charged $T_{cc}^{++}$ States in the Dynamical Diquark Model
• Resonance $X(4630)$
• hidden charm decays of $X(4014)$ in a $D^{\ast }{\bar{D}}^{\ast }$ molecule scenario
• Magnetic dipole moments of $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• Electromagnetic properties of the $T_{cc}^{+}$ molecular states
• The study of possible molecular states of $D_s^{(\ast )}{D}_s^{(\ast )}$ and $B_s^{(\ast )}{B}_s^{(\ast )}$
• Isospin violation effect and three-body decays of the $T_{cc}^{+}$ state
• Heavy-light hybrid mesons with different spin-parities
• Investigating the Isospin Property of $T_{cc}^{+}$ from its Dalitz Plot Distribution
• Mass and decay width of $T_{ccs}$ from symmetries
• Hunting for the prospective $T_{cc}$ family based on the diquark-antidiquark configuration
• Investigation on the bottom analogs of the $T_{cc}^{+}$
• Analysis of bound and resonant states of doubly heavy tetraquarks with spin $J\le 2$
• An alternative way to decipher the nature of the doubly charmed tetraquark $T_{cc}(3875{)}^{+}$: its antiparticle $T_{\bar{c}\bar{c}}(3875{)}^{-}$ photoproduction off nuclei near threshold
• Prediction of an $I(J^P)=0(1^{-})$ $\bar{b}\bar{b}ud$ Tetraquark Resonance Close to the $B^{\ast }{B}^{\ast }$ Threshold Using Lattice QCD Potentials
• Baryons and baryoniums in the perspective of QCD sum rules
• Hadronic molecule model for the doubly charmed state $T_{cc}^{+}$