Zobrazeno 1 - 10
of 228
pro vyhledávání: '"Zhen-Jun Xiao"'
Autor:
Wei Tao, Zhen-Jun Xiao
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-34 (2024)
Abstract Within the nonrelativistic QCD (NRQCD) framework, we complete the three-loop calculations of the NRQCD renormalization constants and the matching coefficients, for the heavy flavor-changing temporal vector, spatial-spatial tensor, spatial-te
Externí odkaz:
https://doaj.org/article/c8032c58b3c245ef9d6ccda27c27b64c
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-21 (2024)
Abstract The scalars $$f_0$$ f 0 closest to 1.5 GeV contain the mesons $$f_0(1370)$$ f 0 ( 1370 ) , $$f_0(1500)$$ f 0 ( 1500 ) and $$f_0(1710)$$ f 0 ( 1710 ) , and the latter two ones are usually viewed as the potential candidates for the scalar glue
Externí odkaz:
https://doaj.org/article/0a2af998a24442c4bd221472ebab5f2a
Autor:
Wei Tao, Zhen-Jun Xiao
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-26 (2023)
Abstract We present the three-loop calculations of the nonrelativistic QCD (NRQCD) current renormalization constants and corresponding anomalous dimensions, and the matching coefficients for the spatial-temporal tensor and spatial-spatial axial-tenso
Externí odkaz:
https://doaj.org/article/ea7cd76bd4384495aa112e332d2ffd48
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-38 (2023)
Abstract Within the framework of non-relativistic QCD (NRQCD) factorization, we compute the matching coefficients between full Quantum Chromodynamics (QCD) and NRQCD for the heavy flavor-changing vector, axial-vector, scalar and pseudo-scalar current
Externí odkaz:
https://doaj.org/article/0bc1dfec4f6446c3a1b6b678bfbe6cf3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 4, Pp 1-11 (2023)
Abstract We compute the matching coefficient between the quantum chromodynamics (QCD) and the non-relativistic QCD (NRQCD) for the flavor-changing scalar current involving the heavy charm and bottom quark, up to the three-loop order within the NRQCD
Externí odkaz:
https://doaj.org/article/88389706cdcb43a3be3ef49776585113
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 1, Pp 1-15 (2023)
Abstract The axial-vector mesons $$f_1(1285)$$ f 1 ( 1285 ) and $$f_1(1420)$$ f 1 ( 1420 ) are particularly viewed as the mixtures of flavor states $$f_n$$ f n and $$f_s$$ f s with mixing angle $$\varphi $$ φ . In order to determine this angle, we s
Externí odkaz:
https://doaj.org/article/2dc57031372c4ec8bfbd2ba93e08d60d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 8, Pp 1-26 (2022)
Abstract We reanalyze the $$\Lambda _b\rightarrow p$$ Λ b → p transition form factors in the perturbative QCD (PQCD) approach by including higher-twist light-cone distribution amplitudes (LCDAs) of a $$\Lambda _b$$ Λ b baryon and a proton. The pr
Externí odkaz:
https://doaj.org/article/058b7871cbe24e13900a7a10574921bb
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 9, Pp 1-24 (2021)
Abstract In this work, we provide estimates of the branching ratios, direct CP asymmetries and triple product asymmetries in $$B_{(s)} \rightarrow (\pi \pi )(K\pi )$$ B ( s ) → ( π π ) ( K π ) decays in the perturbative QCD approach, where the $
Externí odkaz:
https://doaj.org/article/ab202559bf1d4746baf0a4c46fc106d3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 6, Pp 1-20 (2021)
Abstract After the discovery of the double-charm baryon $$\Xi _{cc}^{++}$$ Ξ cc + + by LHCb, one of the most important topics is to search for the bottom-charm baryons which contain a b quark, a c quark and a light quark. In this work, we study the
Externí odkaz:
https://doaj.org/article/b4a6c91107d54e88ba97165681f67d38
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 6, Pp 1-11 (2019)
Abstract We study the quasi-two-body decays $$B\rightarrow D K^*(892) \rightarrow D K\pi $$ B→DK∗(892)→DKπ by employing the perturbative QCD approach. The two-meson distribution amplitudes $$\Phi _{K\pi }^{P\text {-wave}}$$ ΦKπP-wave are ado
Externí odkaz:
https://doaj.org/article/10c513aabeb64b448cd22d45fb7049e0