Revisiting $$\Lambda _{b}\rightarrow \Lambda _{c}$$Λb→Λc and $$\Sigma _{b}\rightarrow \Sigma _{c}$$Σb→Σc weak decays in the light-front quark model

  title={Revisiting \$\$\Lambda \_\{b\}\rightarrow \Lambda \_\{c\}\$\$$\Lambda$b→$\Lambda$c and \$\$\Sigma \_\{b\}\rightarrow \Sigma \_\{c\}\$\$$\Sigma$b→$\Sigma$c weak decays in the light-front quark model},
  author={Hongwei Ke and Ning Hao and Xue–qian Li},
  journal={The European Physical Journal C},
In this work, we study $$\Lambda _{b}\rightarrow \Lambda _{c}$$Λb→Λc and $$\Sigma _{b}\rightarrow \Sigma _{c}$$Σb→Σc weak decays in the light-front quark model. As is well known, the key point for such calculations is properly evaluating the hadronic transition matrix elements which are dominated by the non-perturbative QCD effect. In our calculation, we employ the light-front quark model and rather than the traditional diquark picture, we account the two spectator light quarks as individual… Expand
9 Citations
Study on $$\Xi _{cc}\rightarrow \Xi _c$$ and $$\Xi _{cc}\rightarrow \Xi '_c$$ weak decays in the light-front quark model
In this work we study the weak decays of $\Xi_{cc}\to\Xi_c$ and $\Xi_{cc}\to\Xi'_c$ in the light-front quark model. Generally, a naive, but reasonable conjecture suggests that the $cc$ subsystem inExpand
Probing new physics in semileptonic Σb and Ωb decays
Recently, several hints of lepton non-universality have been observed in the semileptonic B meson decays in terms of both in the neutral current ($b\to s l \bar{l}$) and charged current ($b\to c lExpand
Implication of RD(*) anomalies on semileptonic decays of Σb and Ωb baryons
The flavor changing decays of heavy bottom quarks to the corresponding lighter quarks ($u$, $c$ and $s$) in various $B$-meson decays via charged current and neutral current semileptonic transitionsExpand
Nonleptonic and semileptonic $${\Lambda _b} \rightarrow {\Lambda _c}$$ transitions in a potential quark model
Nonleptonic and semileptonic decay widths of $${\Lambda _b} \rightarrow {\Lambda _c}$$ are analyzed within heavy quark limit and Isgur-Wise formalism. A modified QCD Cornell interaction with theExpand
A comprehensive analysis of weak transition form factors for doubly heavy baryons in the light front approach
The transition form factors for doubly heavy baryons into a spin-1/2 or spin-3/2 ground-state baryon induced by both the charged current and the flavor changing neutral current are systematicallyExpand
A comprehensive study on the semileptonic decay of heavy flavor mesons
The semileptonic decay of heavy flavor mesons offers a clean environment for extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, which describes the CP-violating and flavor changingExpand
Semileptonic weak decays of antitriplet charmed baryons in the light-front formalism
We systematically study the semileptonic decays of ${\bf B_c} \to {\bf B_n}\ell^+ \nu_{\ell}$ in the light-front constituent quark model, where ${\bf B_c}$ represent the anti-triplet charmed baryonsExpand
Semileptonic decays of Λc+ in dynamical approaches
We study the semileptonic decays of $\Lambda_c^+ \to \Lambda(n)\ell^+ \nu_{\ell}$ in two relativistic dynamical approaches of the light-front constituent quark model (LFCQM) and MIT bag model (MBM).Expand
Tensor form factors of P→ P, S, V and A transitions within standard and covariant light-front approaches
In this paper, we investigate the tensor form factors of $P\to P,\,S,\,V$ and $A$ transitions within the standard light-front (SLF) and the covariant light-front (CLF) quark models (QMs). TheExpand


Semileptonic baryon decays with a heavy quark.
  • Singleton
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1991
The semileptonic decay of spin-\textonehalf{} baryons is examined in the spectator-quark model, with special attention given to decays involving baryon whose spectators are spin singlets and those whose spectator are spin triplets. Expand
${{\rm{\Sigma }}}_{b} \rightarrow {{\rm{\Sigma }}}_{c}^{* }$ weak decays in the light-front quark model with two schemes to deal with the polarization of diquark
Thanks to the remarkable achievements of the LHC, a large database on baryons has been accumulated. There is therefore now the opportunity to precisely study baryons, particularly heavy baryons. ByExpand
Weak decays of doubly heavy baryons: the $$1/2\rightarrow 1/2$$1/2→1/2 case
Very recently, the LHCb collaboration has observed in the final state $$\Lambda _c^+ K^-\pi ^+\pi ^+$$Λc+K-π+π+ a resonant structure that is identified as the doubly charmed baryon $$\XiExpand
Diquarks and \Lambda_{b}\to\Lambda_c weak decays
In this work we investigate the weak $\Lambda_{b}\to\Lambda_c$ semi-leptonic and non-leptonic decays. The light-front quark model and diquark picture for heavy baryons are adopted to evaluate theExpand
Charmed baryon strong coupling constants in a light front quark model
Light-front quark model spin-wave functions are employed to calculate the three independent couplings ${g}_{{\ensuremath{\Sigma}}_{c}{\ensuremath{\Lambda}}_{c}\ensuremath{\pi}},$Expand
$B_s\to D_s(3040)$ form factors and $B_s$ decays into $D_s(3040)$
Under the assignment of $D_s(3040)$ as a radially excited p-wave $\bar cs$ state with $J^P=1^+$, we compute the $B_s\to D_s (3040)$ form factors within the covariant light-front quark model. TwoExpand
Color-allowed bottom baryon to charmed baryon nonleptonic decays
  • C. Chua
  • Physics
  • Physical Review D
  • 2019
We study color allowed $\Lambda_b\to \Lambda^{(*,**)}_c M^-$, $\Xi_b\to\Xi_c^{(**)} M^-$ and $\Omega_b\to\Omega^{(*)}_c M^-$ decays with $M=\pi, K,\rho, K^*, D, D_s, D^*, D^*_s, a_1$,Expand
Determining the η−η′ mixing by the newly measured $\mathit{BR}(D(D_{s})\to\eta(\eta')+\bar{l}+\nu_{l}$
The mixing of η−η′ or η−η′−G is of a great theoretical interest, because it concerns many aspects of the underlying dynamics and hadronic structure of pseudoscalar mesons and glueball. DeterminingExpand
What the radiative decays of X(3872) tell us
Since the discovery of X(3872), its structure has been in ceaseless dispute. The data of $X(3872)\rightarrow \pi^+\pi^-\pi^0 J/\psi$ suggest that X(3872) may be a high-spin charmonium-like ofExpand
Decay constants and radiative decays of heavy mesons in light-front quark model
We investigate the magnetic dipole decays V{yields}P{gamma} of various heavy-flavored mesons such as (D,D*,D{sub s},D{sub s}*,{eta}{sub c},J/{psi}) and (B,B*,B{sub s},B{sub s}*,{eta}{subExpand