Searching for tetraquark through weak decays of b-baryons

Abstract

After the experimental observation of charged and neutral $Z_c(3900)$, it is of prime importance to pursue searches for additional production modes of these exotic states. In this work, we investigate the possibility to study the $Z_c(3900)$ through weak decays of b-baryons at the LHCb. Decay amplitudes for various processes have been parametrized in terms of the SU(3) irreducible nonperturbative amplitudes. A number of relations for the partial decay widths are deduced from these results. The decay widths of ${\Lambda }_b^0\to {\Lambda }^0{Z}_c^0(3900)$, ${\Xi }_b^{-}\to {\Sigma }^{-}{Z}_c^0(3900)$ and ${\Xi }_b^0\to {\Lambda }^0{Z}_c^0(3900)$ have also been calculated from which some relevant partial decay widths of b-baryons could be estimated. The results presented in this paper can be tested experimentally at hadron colliders in the future.

15 pages, 2 figures

References in corpus (12)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Branching ratios and direct CP asymmetries in $D\to PP$ decays
• Weak Decays of Doubly Heavy Baryons: SU(3) Analysis
• Weak Decays of Doubly Heavy Baryons: Multi-body Decay Channels
• Updating B --> PP, VP decays in the framework of flavor symmetry
• ${\Lambda }_b\to p,\Lambda$ transition form factors from QCD light-cone sum rules
• Treating $Z_c(3900)$ and $Z(4430)$ as the ground-state and first radially excited tetraquarks
• Charmless Two-body $B(B_s)\to VP$ decays In Soft-Collinear-Effective-Theory
• PQCD Calculation for ${\Lambda }_b\to \Lambda \gamma$ in the Standard Model
• Partners of Z(4430) and Productions in B Decays
• Flavor symmetry analysis of charmless B --> VP decays

Cited by in corpus (6)

• Diagrammatic analysis of hidden- and open-charm tetraquark production in $B$ decays
• Study of the $B^{-}\to K^{-}\eta {\eta }_c$ decay due to the $D\bar{D}$ bound state
• The ground states of hidden-charm tetraquarks and their radial excitations
• Investigating $Z_{cs}(3985)$ and $Z_{cs}(4000)$ exotic states in ${\Lambda }_b\to Z_{cs}^{-}p$ decays
• $U$-spin sum rules for two-body decays of bottom baryons
• Isospin sum rules for bottom-baryon weak decays