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semileptonic decays B/Bs→(D^(?),D^(?)s)lνl in the PQCD approach with the lattice QCD input

Chinese Physics C 2020年第5期44卷 8-21页

作者： Xue-Qing Hu Su-Ping Jin Zhen-Jun Xiao Department of Physics and Institute of Theoretical Physics Nanjing Normal UniversityNanjing 210023China Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal UniversityNanjing 210023China

We study the semileptonic B/Bs→(D^(?),D^(?)s)lνl decays in the framework of the Standard Model(SM),by employing the perturbative QCD(PQCD)factorization formalism combined with the lattice QCD input for the relevant transition form *** calculate the branching ratios B(B(s)→D^(?)(s)lνl)with l=(e,μ,τ),the ratios of the branching fractions R(D^(?))and R(D^(?)s),and the physical observables Pτ(D^(?)(s)),FL(D?(s))and AFB(τ).The“PQCD+Lattice”predictions for B(B→D^(?)lνl)and R(D^(?))agree with the available experimental measurements within *** the ratios R(Ds)and R(D^?s),the"PQCD+Lattice"predictions agree with the other *** Pτ(D^?)and FL(D^?),our theoretical predictions agree with the measured values within *** theoretical predictions of the semileptonic B/Bs decays considered could be tested in the near future by the LHCb and Belle II experiments.

关键词： semileptonic decays form factor PQCD Bs meson

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Estimating the production rates of D-wave charmed mesons via the semileptonic decays of bottom mesons

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Chinese Physics C 2019年第2期43卷 53-76页

作者： Kan Chen Hong-Wei Ke Xiang Liu Takayuki Matsuki School of Physical Science and Technology Lanzhou University Research Center for Hadron and CSR Physics Lanzhou University and Institute of Modern Physics of CAS School of Science Tianjin University Tokyo Kasei University Theoretical Research Division Nishina CenterRIKEN

Using the covariant light-front approach with conventional vertex functions, we estimate the production rates of D-wave charmed/charmed-strange mesons via the B_((s)) semileptonic decays. As the calculated production rates are significant, it seems possible to experimentally search for D-wave charmed/charmed-strange mesons via semileptonic decays, which may provide an additional approach for exploring D-wave charmed/charmed-strange mesons.

关键词： light-front quark model semileptonic decay charmed/charmed-strange meson

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Exclusive semileptonic decays of D and Ds mesons in the covariant confining quark model

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Frontiers of physics 2019年第6期14卷 103-132页

作者： M.A.Ivanov J.G.Korner J.N.Pandya P.Santorelli N.R.Soni C.T.Tran Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia PRISMA Cluster of Excellence Institut für PhysikJohannes Gutenberg-UniversitatD-55099 MainzGermany Applied Physics Department Faculty of Technology and EngineeringThe Maharaja Sayajirao University of BarodaVadodara 390001GujaratIndia Dipartimento di Fisica"E.Pancini" Universitàdi Napoli FedericoⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly

Recently,the BESⅢcollaboration has reported numerous measurements of various D(s)meson semileptonic decays with significantly improved *** with similar studies carried out at BABAR,Belle,and CLEO,new windows to a better understanding of weak and strong interactions in the charm sector have been *** light of new experimental data,we review the theoretical description and predictions for the semileptonic decays of D(s)to a pseudoscalar or a vector *** review is essentially an extended discussion of our recently published results obtained in the framework of the covariant confining quark model.

关键词： covariant quark model semileptonic decay charmed meson form factor angular distribution

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The Structure Functions in the Weak and semileptonic Decay of Meson B to the Mesons D and D*: A Computational Study

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Journal of Modern Physics 2012年第2期3卷 208-213页

作者： Alireza Heidari Mohammadali Ghorbani Institute for Advanced Studies Tehran Iran

The following article has been retracted due to the investigation of complaints received against it. Mr. Mohammadali Ghorbani (corresponding author and also the last author) cheated the author’s name: Alireza Heidari. The scientific community takes a very strong view on this matter and we treat all unethical behavior such as plagiarism seriously. This paper published in Vol.3 No.2, 208-213, 2012, has been removed from this site.

关键词： Bethe-Salpeter Equation Heavy-Mesons Decay Weak Decay Quark Meson semileptonic Decay Hadron Hadronic Decays

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