2021/02/28 by Zi-Yan Yang, Qi-Nan Wang, Wei Chen +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Overline #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.104.014003
published as Phys. Rev. D 104, 014003 (2021) · 19 pages, 3 figures. Version appears in PRD
openalex created_date 2021/05/10 · arxiv created 2021/07/06 · openalex publication_date 2021/07/06 · arxiv updated 2021/07/13 · openalex updated_date 2026/08/05
We study the existence of fully-heavy hidden-flavor bcbc tetraquark states with various JPC=0^\ifmmode±\else\textpm\fi+,0^\ensuremath-\ensuremath-,1^\ifmmode±\else\textpm\fi\ifmmode±\else\textpm\fi,2++, by using the moment QCD sum rule method augmented by fundamental inequalities. Using the moment sum rule analyses, our calculation shows that the masses for the S-wave positive parity bcbc tetraquark states are about 12.2--12.4 GeV in both [3c]bc\ensuremath\bigotimes[3c]_bc and [6c]bc\ensuremath\bigotimes[6c]_bc color configuration channels. Except for two 0++ states, such results are below the thresholds T_\ensuremathηc\ensuremathηb/T_\mathrm\ensuremathΥ\ensuremathψ and T_BcBc, implying that these S-wave positive parity bcbc tetraquark states are probably stable against the strong interaction. For the P-wave negative parity bcbc tetraquarks, their masses in the [3c]bc\ensuremath\bigotimes[3c]_bc channel are around 12.9--13.2 GeV, while a bit higher in the [6c]bc\ensuremath\bigotimes[6c]_bc channel. They can decay into the cc+bb and cb+bc final states via the spontaneous dissociation mechanism, including the J/\ensuremathψ\mathrm\ensuremathΥ, \ensuremathηc\mathrm\ensuremathΥ, J/\ensuremathψ\ensuremathηb, Bc+Bc^\ensuremath- channels.