Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Guo Liang Yu"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-18 (2024)
Abstract Inspired by the great progress in the observations of charmonium-like states in recent years, we perform a systematic analysis about the ground states and the first radially excited states of $$qc\bar{q}\bar{c}$$ q c q ¯ c ¯ (q = u/d and s
Externí odkaz:
https://doaj.org/article/cae3a3054d3047d986bde79a9da44b61
Publikováno v:
Physics Letters B, Vol 859, Iss , Pp 139118- (2024)
The form factors of Bc→ηc and Bc→J/ψ are analyzed in the framework of three-point QCD sum rules. In the calculations, the contributions of the vacuum condensate terms 〈gs2GG〉 and 〈gs3GGGf〉 are considered. In addition, the decay widths a
Externí odkaz:
https://doaj.org/article/5ff210c428d340e5aed5dac4835a4211
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 2, Pp 1-14 (2024)
Abstract A mechanism of the heavy quark dominance in the orbital excitation is proposed in this paper which is testified to be reasonable for singly and doubly heavy baryons. In the relativistic quark model, an analysis of the Hamiltonian figures out
Externí odkaz:
https://doaj.org/article/80eb9cca3d0e4eb1a9bc30e3e8c044cd
Publikováno v:
Physics Letters B, Vol 852, Iss , Pp 138624- (2024)
In this article, we analyze the electromagnetic form factors of the vector heavy-light mesons to the pseudoscalar heavy-light mesons in the framework of three-point QCD sum rules, where the contributions of vacuum condensate terms 〈q‾q〉, 〈q
Externí odkaz:
https://doaj.org/article/591838fc8d7d495a81a570a066fae673
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-13 (2023)
Abstract In this work, we analyze the strong vertices $$\Sigma _{c}\Delta D^{*}$$ Σ c Δ D ∗ and $$\Sigma _{b}\Delta B^{*}$$ Σ b Δ B ∗ using the three-point QCD sum rules under the tensor structures $$i\epsilon ^{\rho \tau \alpha \beta }p_{\al
Externí odkaz:
https://doaj.org/article/5aa1a5b3fedc48a886b9dbf24ecd847d
Publikováno v:
PeerJ, Vol 12, p e16769 (2024)
Background The relationship between hyperlactatemia and prognosis after cardiopulmonary bypass (CPB) is controversial, and some studies ignore the presence of lactic acidosis in patients with severe hyperlactacemia. This study explored the associatio
Externí odkaz:
https://doaj.org/article/896dfbfdc7c6453f99386cc84e231efd
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-16 (2023)
Abstract Inspired by recent progresses in observations of the fully charmed tetraquark states by LHCb, CMS, and ATLAS collaborations, we perform a systematic study of the ground states and the first radial excitations of the S- and P-wave $$\textrm{c
Externí odkaz:
https://doaj.org/article/fde8831789d54342907596dcc0b0727f
Publikováno v:
Nuclear Physics B, Vol 990, Iss , Pp 116183- (2023)
Motivated by great progresses in experiments in searching for the heavy baryons, we systematically analyze the mass spectra and root mean square radius of single heavy baryons ΛQ, ΣQ and ΩQ. The calculations of the mass spectra are carried out in
Externí odkaz:
https://doaj.org/article/fc59a254f0464a2b812aa3cbf70c5df6
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 9, Pp 1-9 (2019)
Abstract In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices $$D_{2}^{*+}D^{+}\rho $$ D2∗+D+ρ , $$D_{2}^{*0}D^{0}\rho $$ D2∗0D0ρ , $$D_{2}^{*+}D^{+}\omega $$ D2∗+D+ω , $$D_{2}^{*0}D^{0}\omega $$ D2∗0D0ω , $$B_{2}^
Externí odkaz:
https://doaj.org/article/ba2bf9960de649bbb45a8083f62afb44
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