Charmed Baryon Physics Circa 2021

Abstract

This is an update of the two articles (H.Y. Cheng, 2009; Cheng, 2015) in which charmed baryon physics around 2007 and 2015, respectively, were reviewed. In this review we emphasize the experimental progress and the theoretical development since 2015.

67 pages, 11 figures, published version in Chin. J. Phys

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• Heavy Baryons in a Quark Model
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Observation of $CP$ violation in charm decays
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• Masses of excited heavy baryons in the relativistic quark-diquark picture
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• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Strong decays of charmed baryons
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• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Low-lying charmed and charmed-strange baryon states
• Radiative Decays of the Heavy Flavored Baryons in Light Cone QCD Sum Rules
• Mass spectra and radiative transitions of doubly heavy baryons in a relativized quark model
• Revisiting CP violation in $D\to PP$ and $VP$ decays
• Structure of charmed baryons studied by pionic decays
• ${\Lambda }_c\to \Lambda {\ell }^{+}{\nu }_{\ell }$ form factors and decay rates from lattice QCD with physical quark masses
• D-wave charmed and bottomed baryons from QCD sum rules
• Radiative decays of the doubly charmed baryons in chiral perturbation theory
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Semileptonic decays of ${\Lambda }_b$ baryons in the relativistic quark model
• Asymmetries of anti-triplet charmed baryon decays
• Radiative decays of double heavy baryons in a relativistic constituent three-quark model including hyperfine mixing
• Radiative M1 transitions of heavy baryons in the bag model
• Non-leptonic two-body weak decays of ${\Lambda }_c(2286)$
• Two-body hadronic weak decays of antitriplet charmed baryons
• Measurement of the Absolute Branching Fraction for ${\Lambda }_c^{+}\to \Lambda {\mu }^{+}{\nu }_{\mu }$
• Decay chain information on the newly discovered double charm baryon state ${\Xi }_{cc}^{++}$
• Semileptonic decays of anti-triplet charmed baryons
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model
• Lifetime of doubly charmed baryons
• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• Singly Cabibbo suppressed decays of ${\Lambda }_c^{+}$ with SU(3) flavor symmetry
• Precision measurement of the ${\Xi }_{cc}^{++}$ mass
• Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
• Semileptonic decays of ${\Lambda }_c$ baryons in the relativistic quark model
• Light-Cone Sum Rules Analysis of ${\Xi }_{Q{Q}^{\prime }q}\to {\Lambda }_{Q^{\prime }}$ Weak Decays
• Color-allowed Bottom Baryon to Charmed Baryon non-leptonic Decays
• ${\Omega }_c\gamma \to {\Omega }_c^{\ast }$ transition in lattice QCD
• Analysis of the semileptonic and nonleptonic two-body decays of the double heavy charm baryon states ${\Xi }_{cc}^{++},{\Xi }_{cc}^{+}$ and ${\Omega }_{cc}^{+}$
• Measurement of masses of the ${\Xi }_c(2645)$ and ${\Xi }_c(2815)$ baryons and observation of ${\Xi }_c(2980)\to {\Xi }_c(2645)\pi$ %and observation of the ${\Xi }_c(2980)$ and observation of ${\Xi }_c(2980)\to {\Xi }_c(2645)\pi$
• Two-body weak decays of doubly charmed baryons
• Radiative M1 transitions of heavy baryons: Effective Quark Mass Scheme
• Semileptonic Decays of Heavy Omega Baryons in a Quark Model
• Understanding the newly observed ${\Xi }_c^0$ states through their decays
• Study of heavy quark conserving weak decays in the quark model
• Topological tensor invariants and the current algebra approach: Analysis of 196 nonleptonic two-body decays of single and double charm baryons -- a review
• Measurements of the branching fractions of ${\Lambda }_c^{+}\to p\eta$ and ${\Lambda }_c^{+}\to p{\pi }^0$ decays at Belle
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to n{\pi }^{+}$
• Radiative decays of dynamically generated charmed baryons
• Study of Electromagnetic Decays of Orbitally Excited ${\Xi }_c$ Baryons
• Revisit assignments of the new excited ${\Omega }_c$ states with QCD sum rules
• Axial-Vector Emitting Weak Nonleptonic Deacys of ${\Omega }_c^0$ Baryon
• Heavy-Flavor-Conserving Hadronic Weak Decays of Charmed and Bottom Baryons
• The decays ${\Xi }_b\to {\Lambda }_b\pi$ and diquark correlations in hyperons
• Semileptonic ${\Xi }_c$ baryon decays in the light cone QCD sum rules
• Measurements of the branching fractions of ${\Xi }_c^0\to \Lambda K_S^0$, ${\Xi }_c^0\to {\Sigma }^0{K}_S^0$, and ${\Xi }_c^0\to {\Sigma }^{+}{K}^{-}$ decays at Belle
• Probing CP Asymmetries in Charm Baryons Decays
• Update on splitting of lifetimes of $c$ and $b$ hyperons within the heavy quark expansion and decays ${\Xi }_Q\to {\Lambda }_Q\pi$
• Measurement of the Masses and Widths of the ${\Sigma }_c(2455{)}^{+}$ and ${\Sigma }_c(2520{)}^{+}$ Baryons
• A method to measure the absolute branching fractions of ${\Lambda }_c$ decays

Cited by in corpus (57)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Luminosities and energies of $e^{+}{e}^{-}$ collision data taken between $\sqrt{s}$=4.612 GeV and 4.946 GeV at BESIII
• Weak Decays of Antitriplet Charmed Baryons from the Perspective of Flavor Symmetry
• Toward discovering the excited $\Omega$ baryons through nonleptonic weak decays of ${\Omega }_c$
• Evidence of a new excited charmed baryon decaying to ${\Sigma }_c(2455{)}^{0,++}{\pi }^{\pm }$
• The newly observed ${\Omega }_c(3327)$: A good candidate for a $D$-wave charmed baryon
• Search for $CP$ violation and measurement of branching fractions and decay asymmetry parameters for ${\Lambda }_c^{+}\to \Lambda h^{+}$ and ${\Lambda }_c^{+}\to {\Sigma }^0{h}^{+}$ ($h=K,\pi$)
• Investigating the spectroscopy behavior of undetected $1F$-wave charmed baryons
• ${\Lambda }_c(2910)$ and ${\Lambda }_c(2940)$ as the conventional baryons dressed with the $D^{\ast }N$ channel
• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
• First Measurement of the Decay Asymmetry in the pure W-boson-exchange Decay ${\Lambda }_c^{+}\to {\Xi }^0{K}^{+}$
• Partial wave analysis of the charmed baryon hadronic decay ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}{\pi }^0$
• Refining radiative decay studies in singly heavy baryons
• Observations of the Cabibbo-Suppressed decays ${\Lambda }_c^{+}\to n{\pi }^{+}{\pi }^0$, $n{\pi }^{+}{\pi }^{-}{\pi }^{+}$ and the Cabibbo-Favored decay ${\Lambda }_c^{+}\to n{K}^{-}{\pi }^{+}{\pi }^{+}$
• Screening of quark charge and mixing effects on transition moments and M1 decay widths of baryons
• Measurement of the Branching Fraction of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to \Lambda K^{+}$
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• Heavy baryons in the relativized quark model with chromodynamics
• Measurement of Branching Fractions of Singly Cabibbo-suppressed Decays ${\Lambda }_c^{+}\to {\Sigma }^0{K}^{+}$ and ${\Sigma }^{+}{K}_S^0$
• Anatomy of ${\Lambda }_c^{+}$ semileptonic decays
• Measurement of the branching fractions of the singly Cabibbo-suppressed decays ${\Lambda }_c^{+}\to p\eta$ and ${\Lambda }_c^{+}\to p\omega$
• Revisiting lifetimes of doubly charmed baryons
• Evidence for the singly Cabibbo-suppressed decay ${\Omega }_c^0\to {\Xi }^{-}{\pi }^{+}$ and search for ${\Omega }_c^0\to {\Xi }^{-}{K}^{+}$ and ${\Omega }^{-}{K}^{+}$ decays at Belle
• Measurements of branching fractions of ${\Lambda }_c^{+}\to {\Sigma }^{+}\eta$ and ${\Lambda }_c^{+}\to {\Sigma }^{+}{\eta }^{\prime }$ and asymmetry parameters of ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^0$, ${\Lambda }_c^{+}\to {\Sigma }^{+}\eta$, and ${\Lambda }_c^{+}\to {\Sigma }^{+}{\eta }^{\prime }$
• Heavy-quark dominance and fine structure of excited heavy baryons ${\Sigma }_Q$, ${\Xi }_Q^{\prime }$ and ${\Omega }_Q$
• Measurements of the branching fractions of ${\Xi }_c^0\to {\Xi }^0{\pi }^0$, ${\Xi }_c^0\to {\Xi }^0\eta$, and ${\Xi }_c^0\to {\Xi }^0{\eta }^{\prime }$ and asymmetry parameter of ${\Xi }_c^0\to {\Xi }^0{\pi }^0$
• Observations of the singly Cabibbo-suppressed decays ${\Xi }_c^{+}\to p{K}_S^0$, ${\Xi }_c^{+}\to \Lambda {\pi }^{+}$, and ${\Xi }_c^{+}\to {\Sigma }^0{\pi }^{+}$ at Belle and Belle II
• Measurement of the branching fraction of ${\Xi }_c^0\to {\Lambda }_c^{+}{\pi }^{-}$ at Belle
• Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the ${\Omega }_c^0$ Baryon
• Invisible Charm Exotica
• Measurement of branching fractions of ${\Lambda }_c^{+}$ decays to ${\Sigma }^{+}{K}^{+}{K}^{-}$, ${\Sigma }^{+}\varphi$ and ${\Sigma }^{+}{K}^{+}{\pi }^{-}({\pi }^0)$
• First search for the weak radiative decays ${\Lambda }_c^{+}\to {\Sigma }^{+}\gamma$ and ${\Xi }_c^0\to {\Xi }^0\gamma$
• Mass spectra of singly heavy baryons in the relativized quark model with heavy-quark dominance
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to p{\pi }^0$
• Measurements of Born Cross Sections for $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c(2595{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c(2625{)}^{-}+c.c.$ at $\sqrt{s}=$4918.0 and 4950.9 MeV
• Measurement of Branching Fractions for ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}$ and ${\Lambda }_c^{+}\to n{K}_S^0{K}^{+}$
• Predicting the Masses of Exotic Hadrons with Data Augmentation Using Multilayer Perceptron
• Measurement of the ${\Omega }_c^0$ and ${\Xi }_c^0$ baryon lifetimes using hadronic $b$-baryon decays
• Spectroscopic properties of $1F$-wave singly bottom baryons
• First measurements of the branching fractions for the decay modes ${\Xi }_c^0\to \Lambda \eta$ and ${\Xi }_c^0\to \Lambda {\eta }^{\prime }$ and search for the decay ${\Xi }_c^0\to \Lambda {\pi }^0$ using Belle and Belle II data
• Search for charmed baryons in the ${\Lambda }_c^{+}\eta$ system and measurement of the branching fractions of ${\Lambda }_c(2880{)}^{+}$ and ${\Lambda }_c(2940{)}^{+}$ decaying to ${\Lambda }_c^{+}\eta$ and $p{D}^0$ relative to ${\Sigma }_c(2455)\pi$
• Revisiting heavy-flavor conserving weak decays of charmed baryons within the nonrelativistic quark model
• Study of the mass spectra of doubly heavy ${\Xi }_{Q{Q}^{\prime }}$ and ${\Omega }_{Q{Q}^{\prime }}$ baryons
• Baryons and baryoniums in the perspective of QCD sum rules
• Evidence for the semileptonic decays ${\Lambda }_c^{+}\to {\Sigma }^{\pm }{\pi }^{\mp }{e}^{+}{\nu }_e$
• The nonleptonic decays of double-charmed baryon ${\Omega }_{cc}^{+}$ within the nonrelativistic quark model
• Mass spectrum, magnetic moments and Regge trajectories of ${\Omega }_{ccb}$ and ${\Omega }_{cbb}$ baryons in the nonrelativistic quark--diquark model
• First observation of the decay ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}{\pi }^0$
• Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to {\Sigma }^{-}{K}^{+}{\pi }^{+}$
• The nonleptonic decays ${\Xi }_{cc}^{++}\to {\Xi }_c^{(\prime )+}{\pi }^{+}$ within the nonrelativistic quark model
• The strangest lifetime: A bizarre story of $\tau ({\Omega }_c^0)$
• Improved measurement of absolute branching fraction of the inclusive decay ${\Lambda }_c^{+}\to K_S^{0}X$
• Measurements of the branching fractions of ${\Xi }_c^{+}\to {\Sigma }^{+}{K}_S^0$, ${\Xi }_c^{+}\to {\Xi }^0{\pi }^{+}$, and ${\Xi }_c^{+}\to {\Xi }^0{K}^{+}$ at Belle and Belle II
• First observation of ${\Lambda }_c(2595{)}^{+}\to {\Lambda }_c^{+}{\pi }^0{\pi }^0$ and ${\Lambda }_c(2625{)}^{+}\to {\Lambda }_c^{+}{\pi }^0{\pi }^0$
• ${\Xi }_c(3055)$ as a scaling point to establish the excited ${\Xi }_c^{(\prime )}$ family
• Light cone QCD sum rules study of the rare radiative ${\Xi }_{bb}^{\ast }\to {\Xi }_b\gamma$ decay