Conveners
Parallel Session IV
- Alexey Nefediev (Lebedev Physical Institute)
Mr
Nakul Soni
(Applied Physics Department, The Maharaja Sayajirao University of Baroda, Vadodara)
25/05/2018, 14:30
The semileptonic charmed meson decays are the ideal tools to explore the various aspects of heavy quark decays. We study the leptonic and semileptonic $D_s$ meson decays ($D_s \to \ell^+ \nu_{\ell}$ and $D_s \to \phi \ell^+ \nu_{\ell}$) in the framework of covariant quark model (CQM) with built-in infrared confinement. The CQM is an effective quantum field approach for the hadronic interaction...
Dr
Fu-Sheng Yu
(Lanzhou University)
25/05/2018, 14:47
We find a new $CP$-violation effect in charm decays into neutral kaons,
which results from the interference between two tree (Cabibbo-favored
and doubly Cabibbo-suppressed) amplitudes with the mixing of final-state
mesons. This effect, estimated to be of order of $10^{-3}$, is much
larger than the direct $CP$ asymmetries in these decays, but missed in
the literature. It can be...
Mr
Stefan Ropertz
(University of Bonn)
25/05/2018, 15:04
Dispersion theory is a powerful tool for partial wave analyses of decay and scattering processes involving light mesons. However, as a result of the onset of various inelastic channels, its simple single- or two-channel implementations can in practice be applied only up to energies of about $1.1$ GeV. In this talk we introduce an effective parametrization for the isoscalar, scalar pion form...
Dr
Benoit Loiseau
(LPNHE (Paris, FRANCE))
25/05/2018, 15:21
On behalf of my colleagues, I will present a short review on our recent work [1] on
parametrizations of weak $B$ and $D$ decays into final
states composed of three light mesons, namely the various charge
states $\pi\pi\pi$, $K\pi\pi$ and $KK\bar K$.
These parametrizations are derived from previous calculations based on a quasi-two-body
factorization approach in which two-body...
Dr
Matteo Fael
(University of Siegen)
25/05/2018, 15:38
The heavy mass expansion (HME) has been an indispensable tool for precision calculation in flavor physics, especially for bottom hadrons. However, there have been always doubt if the HME is applicable to charm decays with the same success since both $\alpha_s(m_c)$ and $\Lambda_\mathrm{QCD}/m_c$ are not very small parameters.
However one can turn the vice into a virtue. Since...
Dr
Mikhail Mikhasenko
(HISKP, Universität Bonn)
25/05/2018, 15:55
The nature of the recently discovered exotic charmonium-like states is still an open question.
The distinction between different underlying physical pictures often relies on an analysis of the resonance lineshape. In this context, it becomes crucial to know how exactly the amplitude should incorporate resonances and what uncertainties we expect from the formalism.
In the talk, I will...
Mr
Jiaxing Zhao
(Tsinghua University)
25/05/2018, 16:12
Heavy quarks are only initially produced in nuclear collisions and the number is conserved during the evolution of the system. We determine the sequence of charmed hadron production by solving a relativistic potential model and hydrodynamic equations. By embedding the charm conservation in a sequential coalescence model, the later produced charmed hadrons are suppressed. Combining together...
