Search for prompt production of pentaquarks in charm hadron final states

Abstract

A search for hidden-charm pentaquark states decaying to a range of ${\Sigma }_c\bar{D}$ and ${\Lambda }_c\bar{D}$ final states, as well as doubly-charmed pentaquark states to ${\Sigma }_{c}D$ and ${\Lambda }_c^{+}D$, is made using samples of proton-proton collision data corresponding to an integrated luminosity of $5.7f{b}^{-1}$ recorded by the LHCb detector at $\sqrt{s}=13TeV$. Since no significant signals are found, upper limits are set on the pentaquark yields relative to that of the ${\Lambda }_c^{+}$ baryon in the ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$ decay mode. The known pentaquark states are also investigated, and their signal yields are found to be consistent with zero in all cases.

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-018.html (LHCb public pages)

References in corpus (9)

• PYTHIA 6.4 Physics and Manual
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of an exotic narrow doubly charmed tetraquark
• Study of the doubly charmed tetraquark $T_{cc}^{+}$
• Hadro-Charmonium
• Observation of new ${\Xi }_c^0$ baryons decaying to ${\Lambda }_c^{+}{K}^{-}$
• Charged charmonium-like Z+(4430) from rescattering in conventional B decays
• Doubly Charmed Pentaquarks

Cited by in corpus (4)

• Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $\Lambda h^{+}{h}^{{}^{\prime }-}$ and evidence for $CP$ violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays
• Unravelling Pentaquarks with Born--Oppenheimer effective theory
• Molecular $P_{\psi }$ pentaquarks from light-meson exchange saturation
• First observation of the ${\Lambda }_b^0\to {\Lambda }_c^{+}{D}_s^{-}{K}^{+}{K}^{-}$ decay and search for pentaquarks in the ${\Lambda }_c^{+}{D}_s^{-}$ system