QCD sum rule calculation for P-wave bottom baryons

Abstract

We study the P-wave bottom baryons using the method of QCD sum rule and heavy quark effective theory. Our results suggest that Lambda_b(5912) and Lambda_b(5920) can be well described by the baryon doublet [3F_bar, 1, 1, rho], and they belong to the SU(3) 3F_bar multiplets of J(P)=1/2(-) and 3/2(-). Their SU(3) flavor partners, Xi_b(1/2-) and Xi_b(3/2-), have masses 6.06 \pm 0.13 GeV and 6.07 \pm 0.13 GeV, respectively, with mass splitting 9 \pm 4 MeV. The results obtained using baryon doublet [3F_bar, 1, 0, lambda] are similar and also consistent with the experimental data. We also study the SU(3) 6F multiplets by using the baryon multiplets [6F, 0, 1, lambda], [6_F, 1, 0, rho] and [6F, 2, 1, lambda], and our results suggest that the P-wave bottom baryons Sigma_b, Xi'_b and Omega_b have (averaged) masses about 6.0 GeV, 6.2 GeV and 6.4 GeV, respectively.

9 pages, 7 figures, 1 table, accepted by PRD

References in corpus (17)

• Big-Bang Nucleosynthesis
• Heavy Baryons in a Quark Model
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Faddeev study of heavy baryon spectroscopy
• Strong decays of charmed baryons
• Assignments of ${\Lambda }_Q$ and ${\Xi }_Q$ baryons in the heavy quark-light diquark picture
• Bottom Baryons
• P-wave charmed baryons from QCD sum rules
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory: An Update
• Odd parity bottom-flavored baryon resonances
• Analysis of ${\Omega }_c^{\ast }(css)$ and ${\Omega }_b^{\ast }(bss)$ with QCD sum rules
• QCD sum rules study of Ξ_c and Ξ_b baryons
• Compositeness of the strange, charm and beauty odd parity $\Lambda$ states
• Prospects for observing the lowest-lying odd-parity ${\Sigma }_c$ and ${\Sigma }_b$ baryons
• Open bottom states and the anti-B meson propagation in hadronic matter
• The D-wave heavy-light mesons from QCD sum rules
• Dipion decays of heavy baryons

Cited by in corpus (61)

• The hidden-charm pentaquark and tetraquark states
• Pentaquark and Tetraquark states
• An updated review of the new hadron states
• A review of the open charm and open bottom systems
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Observation of a new ${\Xi }_b^{-}$ resonance
• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Excited State Mass spectra and Regge trajectories of Bottom Baryons
• Spectroscopy of singly, doubly, and triply bottom baryons
• D-wave charmed and bottomed baryons from QCD sum rules
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• Observation of a new excited beauty strange baryon decaying to ${\Xi }_{\mathrm{b}}^{-}{\pi }^{+}{\pi }^{-}$
• Strong and radiative decays of the low-lying $D$-wave singly heavy baryons
• Role of newly discovered ${\Xi }_b(6227{)}^{-}$ for constructing excited bottom baryon family
• Interpretation of the newly observed ${\Sigma }_b(6097{)}^{\pm }$ and ${\Xi }_b(6227{)}^{-}$ states as the $P$-wave bottom baryons
• Description of the ${\Xi }_c$ and ${\Xi }_b$ states as molecular states
• Establishing low-lying doubly charmed baryons
• Assigning the newly reported ${\Sigma }_b(6097)$ as a $P$-wave excited state and predicting its partners
• Observation of a new ${\Xi }_b^0$ state
• Systematic analysis of single heavy baryons ${\Lambda }_Q$, ${\Sigma }_Q$ and ${\Omega }_Q$
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$
• Identifying the ${\Xi }_b(6227)$ and ${\Sigma }_b(6097)$ as $P$-wave bottom baryons of $J^P=3/2^{-}$
• A possible interpretation of the newly observed $\Omega (2012)$ state
• Single heavy baryons with chiral partner structure in a three-flavor chiral model
• Regge behaviors in orbitally excited spectroscopy of charmed and bottom baryons
• Strong decays of the higher excited ${\Lambda }_Q$ and ${\Sigma }_Q$ baryons
• $P$-wave charmed baryons of the $SU(3)$ flavor $6_F$
• Structure of the ${\Xi }_b(6227{)}^{-}$ Resonance
• Waves along fractal coastlines: From fractal arithmetic to wave equations
• Interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states in a chiral quark model
• Decay properties of $P$-wave heavy baryons accompanied by vector mesons within light-cone sum rules
• Molecular ${\Omega }_b$ states
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Mass Spectra and Decay Properties of Singly Heavy Bottom-Strange Baryons
• Analysis of the ${\Lambda }_c(2860)$, ${\Lambda }_c(2880)$, ${\Xi }_c(3055)$ and ${\Xi }_c(3080)$ as D-wave baryon states with QCD sum rules
• Canonical interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ via strong decay behaviors
• Analysis of ${\Lambda }_c(2595)$, ${\Lambda }_c(2625)$, ${\Lambda }_b(5912)$, ${\Lambda }_b(5920)$ based on a chiral partner structure
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Toward establishing the low-lying $P$-wave ${\Sigma }_b$ states
• A suggested search for doubly charmed baryons of $J^P=3/2^{+}$ via their electromagnetic transitions
• Systematic analysis of strange single heavy baryons ${\Xi }_c$ and ${\Xi }_b$
• Observed ${\Omega }_b$ spectrum and meson-baryon molecular states
• Excited ${\Omega }_b$ baryons and fine structure of strong interaction
• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
• A Study of Excited ${\Omega }_b^{-}$ States in Hypercentral Constituent Quark Model via Artificial Neural Network
• Analysis of the 1S and 2S states of the ${\Lambda }_Q$ and ${\Xi }_Q$ with the QCD sum rules
• ${\Lambda }_b(6146{)}^0$ state newly observed by LHCb
• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon
• On the nature of ${\Xi }_c(2930)$
• Determination of the possible quantum numbers for the newly observed ${\Xi }_b(6227{)}^0$ state
• Heavy baryons in the relativized quark model with chromodynamics
• The $1D$, $2D$ ${\Xi }_b$ and ${\Lambda }_b$ baryons
• Decay widths and mass spectra of single bottom baryons
• Identifying the ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ as $D$-wave bottom baryons
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• The $\Lambda$-type P-wave bottom baryon states via the QCD sum rules
• Observation of the ${\Xi }_{\mathrm{b}}^{-}$ $\to$ $\psi$(2S)${\Xi }^{-}$ decay and studies of the ${\Xi }_{\mathrm{b}}$(5945)${}^0$ baryon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Spectroscopic properties of $1F$-wave singly bottom baryons
• Baryons and baryoniums in the perspective of QCD sum rules
• Mass spectra and transition magnetic moments of low lying charmed baryons in a quark model
• Probing the inner structures of the observed ${\Xi }_b$ and ${\Xi }_b^{\prime }$ resonances