Conveners
Mesons of heavy quarks
- Feng-Kun Guo (Institute of Theoretical Physics, Chinese Academy of Sciences)
- Stephen Lars OLSEN (University of Chinese Academy of Sciences)
Mesons of heavy quarks
- Elisabetta Prencipe (Forschungszentrum Juelich)
Dr
Zhentian Sun
(Institute of High Energy Physics, CAS)
26/02/2019, 09:00
Spectroscopy of light and heavy quarks
Contributed Oral
BESIII has observed a lot of unclassified states which don't suit the standard quark model. These states are named as XYZ states, such as X(3872), Y(4260), $Z_c(3900)$... Some of these states are candidates of exotic tetra-quark states, molecular states, hybrid and so on. I'll report the recent experimental results from BESIII about these XYZ states.
Dr
Jens Soeren Lange
(University Giessen)
26/02/2019, 09:20
Spectroscopy of light and heavy quarks
Invited Oral
New results and present status of exotic, narrow states with heavy quarks, often referred to as "XYZ states", at the Belle experiment will be presented. Not only
observations, but also results of negative searches will be reviewed. Interpretation in view of the landscape of so far observed conventional and exotic states will be
attempted, with comparison to theory expectations.
Viacheslav Matiunin
(Institute for Theoretical and Experimental Physics)
26/02/2019, 09:40
Spectroscopy of light and heavy quarks
Invited Oral
The LHCb experiment is designed to study properties and decays of heavy hadrons produced in proton-proton collisions at the LHC. The large statistics collected by the LHCb experiment enables precision spectroscopy studies of beauty hadrons. The recent results on spectroscopy of conventional and exotic hadrons based on the data collected in Run-1 and Run-2 of LHC will be presented.
Dr
Elisabetta Prencipe
(Forschungszentrum Juelich)
26/02/2019, 10:00
Spectroscopy of light and heavy quarks
Invited Oral
The Belle II experiment has successfully concluded Phase-2 of data taking in July 2018, and soon will start Phase-III, with the complete detector setup, planned
in April 2019. Great perspectives and unique physics cases are enhanced in the Belle II physics program. In the sector of charmonium and spectroscopy, Belle II will
investigate several physics processes: ISR physics for the vector...
Prof.
Feng-Kun Guo
(Institute of Theoretical Physics, Chinese Academy of Sciences)
26/02/2019, 10:20
Spectroscopy of light and heavy quarks
Invited Oral
Selected theoretical aspects of the XYZ states, including different structure models and effects from kinematical singularities, will be discussed.
Dr
Alexey Nefediev
(Lebedev Physical Institute)
26/02/2019, 10:40
Spectroscopy of light and heavy quarks
Invited Oral
The most recent experimental data for the decays of the vector bottomonium Upsilon(10860) proceeding through the formation of the states Zb(10610) and Zb(10650) are analysed simultaneously using solutions of the Lippmann-Schwinger equations which respect constraints from unitarity and analyticity. The interaction potential in the open-bottom channels B(*)-anti-B* contains short-range...
Dr
Frank Nerling
(GU Frankfurt, GSI Darmstadt)
26/02/2019, 11:20
Spectroscopy of light and heavy quarks
Invited Oral
The PANDA experiment at the new FAIR facility under construction at GSI/Darmstadt (Germany)
is dedicated to a broad hadron physics programme addressing various different aspects of QCD.
The multi-purpose PANDA detector will especially be best suited for charmonium spectroscopy.
In combination with an intense and high-quality antiproton beam, PANDA will be able to perform
precision...
Prof.
Stephen Lars OLSEN
(University of Chinese Academy of Sciences)
26/02/2019, 11:40
Spectroscopy of light and heavy quarks
Invited Oral
The list of XYZ mesons, which was initiated 16 years ago, continues to expand.
Although these states have a number of common properties, including: large
branching fractions to hidden-quarkonium states (in spite of kinematically
accessible open-flavor, fall-apart decay channels); relatively narrow widths; and
preferences for $J^{P(C)} =1^{+(+)}$ quantum numbers, no single theoretical model...
Dr
Ivan Belyaev
(Instriotute for Theoretical and Experimental Physics. ITEP)
26/02/2019, 12:00
Spectroscopy of light and heavy quarks
Invited Oral
A large set of data collected by the LHCb experiment in proton-proton collisions at sqrt{s}=7,8 and 13TeV allows many precise measurements for charmonia production and properties, in particular, the precise determination of the masses and the natural widths of several charmonium states.
Mr
Lianjin Wu
(Institute of High Energy Physics, Beijing)
26/02/2019, 12:20
Spectroscopy of light and heavy quarks
Invited Oral
BESIII is an ideal laboratory to study charmonium decays, due to it's largest sample on J/psi, psi(2S) etc. Its achieved luminosity has reached the design luminosity. Recently, a lot of interesting studies are performed by BESIII, such as study of psi(2S)-> e+ e- chi_cJ, chi_cJ->e+ e- J/psi, J/psi -> Lambda_c+ e- + c.c. etc. This talk will introduce a few of them briefly.
Kirill Chilikin
(LPI RAS)
26/02/2019, 12:40
Spectroscopy of light and heavy quarks
Invited Oral
We present an overview of conventional charmonium studies at Belle. It includes the observation of the $\chi_{c0}(3860)$, the measurement of the absolute branching fractions of $B^+ \rightarrow X_{c\bar{c}} K^+$, the observation of $e^+e^- \rightarrow \chi_{c1}\gamma$, and other new results.
Tatyana Kharlamova
(BINP, NSU)
26/02/2019, 14:50
Spectroscopy of light and heavy quarks
Contributed Oral
We report latest precise results on J/ψ and ψ(2S) parameters based on the data collected with the KEDR detector at the VEPP-4M e+e- collider.
Leptonic width of J/ψ meson and its composition to hadronic and electronic branching fractions
have been measured directly with the processes e+e- →hadrons and e+e- →e+e- at J/ψ
resonance energy range. The obtained accuracy is less than 2%.
The...
Prof.
Svjetlana Fajfer
(Department of Theoretical Physics, Jožef Stefan Institute)
26/02/2019, 15:10
Spectroscopy of light and heavy quarks
Invited Oral
Understanding charm hadrons structures and dynamics motivates many studies
within QCD. In particular Lattice QCD can provide us with precise
calculation of the hadronic inputs required in the extraction of the CKM matrix elements as well as leads to understanding of the exotic QCD structure as tertraquarks.
In the electroweak sector B meson anomalies and muon anomalous...
Prof.
Nikolay Achasov
(Sobolev Institute for Mathematics)
26/02/2019, 15:30
Spectroscopy of light and heavy quarks
Invited Oral
It is shown that the $e^+e^-\to Z\to\chi_{c1}/\chi_{b1}$ and $e^+e^-\to\gamma^{\ast}\gamma^{\ast}\to\chi_{c1}/\chi_{b1}$ contributions do not interfere in the total cross sections. That is, the creation of longitudinally polarized electron-positron
beams allows to study separately the $e^+e^-\to Z\to\chi_{c1}/\chi_{b1}$ and
$e^+e^-\to\gamma^{\ast}\gamma^{\ast}\to\chi_{c1}/\chi_{b1}$.
In...
Dr
Romen Mizuk
(Lebedev Physical Institute)
26/02/2019, 15:50
Spectroscopy of light and heavy quarks
Invited Oral
We review recent Belle results on bottomonium. They include
Y(2S) --> gamma eta_b(1S) with measurement of the eta_b(1S) mass;
Y(4S) --> eta' Y(1S);
energy scan of e+e- --> omega chi_bJ(1P); and
updated result on energy scan of e+e- --> pi+pi- Y(1,2,3S) (new for this conference).
Dr
Robert Kaminski
(Institute of Nuclear Physics PAS)
26/02/2019, 16:10
Flavor (physics of K and D mesons)
Invited Oral
Various necessary conditions which two-body amplitudes (e.g. FSI) must meet will be presented and discussed.
Methods of extraction of resonances from these amplitudes will be studied and examples of different results will be presented.
The advantages and disadvantages of these methods will be analyzed and the methods that meet the necessary mathematical conditions and are convenient to...
