Observation of new ${\Omega }_c^0$ states decaying to the ${\Xi }_c^{+}{K}^{-}$ final state

Abstract

Two new excited states, ${\Omega }_c(3185{)}^0$ and ${\Omega }_c(3327{)}^0$, are observed in the ${\Xi }_c^{+}{K}^{-}$ invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9{\mathrm{fb}}^{-1}$. Five previously observed excited ${\Omega }_c^0$ states are confirmed, namely ${\Omega }_c(3000{)}^0$, ${\Omega }_c(3050{)}^0$, ${\Omega }_c(3065{)}^0$, ${\Omega }_c(3090{)}^0$, and ${\Omega }_c(3119{)}^0$. The masses and widths of these seven states are measured with the highest precision to date.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-043.html (LHCb public pages)

References in corpus (32)

• A Brief Introduction to PYTHIA 8.1
• LHCb Detector Performance
• The LHCb Trigger and its Performance in 2011
• Efficient, reliable and fast high-level triggering using a bonsai boosted decision tree
• Observation of five new narrow ${\Omega }_c^0$ states decaying to ${\Xi }_c^{+}{K}^{-}$
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Very narrow excited ${\Omega }_c$ baryons
• Design and performance of the LHCb trigger and full real-time reconstruction in Run 2 of the LHC
• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Observation of Excited ${\Omega }_c$ Charmed Baryons in $e^{+}{e}^{-}$ Collisions
• Measurement of the Λ_b^0, Ξ_b^- and Ω_b^- baryon masses
• Understanding the newly observed ${\Omega }_c$ states through their decays
• RapidSim: an application for the fast simulation of heavy-quark hadron decays
• Precision measurement of D meson mass differences
• Interpretation of the newly observed ${\Omega }_c^0$ resonances
• Quantum Numbers of ${\Omega }_c$ States and Other Charmed Baryons
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• Molecular ${\Omega }_c$ states generated from coupled meson-baryon channels
• New ${\Omega }_c^0$ baryons discovered by LHCb as the members of $1P$ and $2S$ states
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Strong and radiative decays of the low-lying $D$-wave singly heavy baryons
• A meson-baryon molecular interpretation for some ${\Omega }_c$ excited baryons
• Hadronic decay properties of newly observed ${\Omega }_c$ baryons
• The observed ${\Omega }_c^0$ resonances as pentaquark states
• Precision measurement of the mass and lifetime of the Xi_b^- baryon
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$
• $P$-wave charmed baryons of the $SU(3)$ flavor $6_F$
• Hadronic weak decays of the charmed baryon ${\Omega }_c$
• Study on the ${\Omega }_c^0$ States Decaying to ${\Xi }_c^{+}{K}^{-}$ in $pp$ collisions at $\sqrt{s}=7$, 13 TeV
• The molecular nature of some exotic hadrons

Cited by in corpus (14)

• Molecular charmed baryons and pentaquarks from light-meson exchange saturation
• Refining radiative decay studies in singly heavy baryons
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• Investigation of the mass spectra of singly heavy baryons ${\Sigma }_Q$, ${\Xi }_Q^{\prime }$ and ${\Omega }_Q$ $(Q=c,b)$ in the Regge trajectory model
• Heavy baryons in the relativized quark model with chromodynamics
• Decay widths and mass spectra of single bottom baryons
• Heavy quark dominance in orbital excitation of singly and doubly heavy baryons
• Evidence for Two Excited ${\Omega }^{-}$ Hyperons
• Heavy-quark dominance and fine structure of excited heavy baryons ${\Sigma }_Q$, ${\Xi }_Q^{\prime }$ and ${\Omega }_Q$
• Systematic analysis of the mass spectra of triply heavy baryons
• First determination of the spin-parity of ${\Xi }_c(3055{)}^{+,0}$ baryons
• Observation of a new charmed baryon decaying to ${\Xi }_c^{+}{\pi }^{-}{\pi }^{+}$
• Mass spectra of singly heavy baryons in the relativized quark model with heavy-quark dominance
• Mass spectrum and magnetic moments of singly-charmed baryons: a quark-diquark model analysis of ${\Omega }_c(3185{)}^0$ and ${\Omega }_c(3327{)}^0$