$J^P$ Assignments of ${\Lambda }_c^{+}$ Baryons

Abstract

The "good" diquark is employed to study ${\Lambda }_c^{+}$ baryons within a mass loaded flux tube model. The study indicates that all ${\Lambda }_c^{+}$ baryons candidates in the 2008 review by the Particle Data Group (PDG) are well described in the mass loaded flux tube model. The quantum numbers $J^P$ of these ${\Lambda }_c^{+}$ candidates are assigned. If ${\Lambda }_c(2765{)}^{+}$ is an orbitally excited ${\Lambda }_c^{+}$, it is likely the $J^P={\frac{3}{2}}^{+}$ one. If ${\Lambda }_c(2765{)}^{+}$ is an orbitally excited ${\Sigma }_c$, there ought to be another $J^P={\frac{3}{2}}^{+}$ ${\Lambda }_c^{+}$ with mass $\approx 2770$ MeV. In the model, there exists no $J^P={\frac{1}{2}}^{+}$ ${\Lambda }_c(\approx 2700{)}^{+}$ predicted in existing literature. ${\Lambda }_c(2940{)}^{+}$ is very possible the orbitally excited baryon with $J^P={\frac{5}{2}}^{-}$.

4 pages, 3 tables, RevTex, Two typos corrected

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• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Towards an understanding of heavy baryon spectroscopy
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• Strong decays of charmed baryons
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• ${\Lambda }_c^{+}(2940)$: A Possible Molecular State?
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Cited by in corpus (22)

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• Radiative decay of Lambdac(2940)+ in a hadronic molecule picture
• The observed charmed hadron ${\Lambda }_c(2940{)}^{+}$ and the $D^{\ast }N$ interaction
• $S$-wave $D^{(\ast )}N$ molecular states: ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$?
• Strong decay of ${\Lambda }_c(2940)$ as a $2P$ state in the ${\Lambda }_c$ family
• Strong three-body decays of Lambdac(2940)+
• Production of charmed baryon ${\Lambda }_c(2940{)}^{+}$ at PANDA
• Strong Decays of observed ${\Lambda }_c$ Baryons in the ${}^3{P}_0$ Model
• Evidence of a structure in ${\bar{K}}^0{\Lambda }_c^{+}$ consistent with a charged ${\Xi }_c(2930{)}^{+}$, and updated measurement of ${\bar{B}}^0\to {\bar{K}}^0{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Identification of newly observed singly charmed baryons using relativistic flux tube model
• Spectrum of nonstrange singly charmed baryons in the constituent quark model
• Evidence of a new excited charmed baryon decaying to ${\Sigma }_c(2455{)}^{0,++}{\pi }^{\pm }$
• Regge-like spectra of excited singly heavy mesons
• Production of charmed baryon ${\Lambda }_c(2940)$ by kaon-induced reaction on a proton target
• Analysis of the ${\Lambda }_c(2625)$ and ${\Xi }_c(2815)$ with QCD sum rules
• Three-body decay of ${\Lambda }_c^{\ast }(2765)$ and determination of its spin-parity
• Strong decays of singly heavy baryons from a chiral effective theory of diquarks
• Unveiling the Composition of the Single-Charm Molecular Pentaquarks: Insights from Radiative Decay and Magnetic Moment
• Possibility of ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$ as $S$-wave $D^{(\ast )}N$ molecular states