Permanent link for all public and protected information:. You can use this link for bookmarks:. Reset filters. Displaying contributions out of Type: Contributed Oral Session: Flavour. Both experiments produced new results in The NA62 experiment observed Presented by Dr.
Deciphering Strong-Interaction Phenomenology through Precision Hadron-Spectroscopy
Type: Contributed Oral Session: Mesons of light quarks. In my contribution I will focus on the study of the intermediate dynamics of the reaction, i. I will talk about the results in the distinguishing of different intermediate mechanisms. The dominance of the omega pi0 and a1 pi amplitudes will be p Presented by Mr. An extension of BDK event generator. Berends, P. Davervedlt and R. Kleiss is presented, which accounts for production of narrow resonances. The initial state radiation can be accounted as well. Axial-vector meson LbL contribution to g-2 of muon in nonlocal quark model.
Type: Invited Oral Session: g The light-by-light contribution to muon anomalous magnetic moment from axial-vector meson exchanges is estimated in the framework of nonlocal quark model.
The full kinematic dependence of the transition form-factor is taken into account. The comparison with existed parametrizations based on the experimental data on the transition form factor is performed.
The corresponding contribution to the hyp Type: Invited Oral Session: Status of facilities and new projects. The design luminosity was reached in , setting a new world record for the accelerator in this energy regime. In my this Presented by Prof. BINP electron-positron facilities. Since both colliders are joint to the single accelerator complex via common injector of high quality intensive beams.
In VEPP resumed data taking after 3 years of upgrade. The luminosity was increased in a factor of in a whole energy range. Baryon Studies at Belle. Type: Invited Oral Session: Baryon formfactors.
These results will be followed by a short discussion about how does that improve our knowledge of the baryon form factors and the prospects of Kai ZHU on 28 Feb at COMET status and plans. CERN provides the large variety of high-energy beams for nuclear and particle physics research.
One is the beam line M2 which is optimized to deliver an intense muon beam, but also hadron beams of both polarities. They are brought to an overground hall, which is used since many years almost exclusively by the COMPASS collaboration, with a broad experimental physics program on Quantum Chromodynamic Charm Physics. Type: Invited Oral Session: Mesons of heavy quarks. Charmed mesons and baryons at LHCb. With this data set, LHCb is discovering many previously unobserved charmed states and making the most precise determinations of the properties of known states.
LHCb's latest results on charmed baryons are presented. Its achieved luminosity has reached the design luminosity.
This talk will introduce a few of them briefly. Lianjin WU on 26 Feb at Charmonium studies at Belle. We present an overview of conventional charmonium studies at Belle.
Charmonium studies at LHCb. Type: Poster.
The sophisticated accelerator appara Type: Contributed Oral Session: g Dispersive approach to the hadronic light-by-light contribution to the muon g In the d Exotic molecular states in the decays of vector bottomonia. The most recent experimental data for the decays of the vector bottomonium Upsilon proceeding through the formation of the states Zb and Zb are analysed simultaneously using solutions of the Lippmann-Schwinger equations which respect constraints from unitarity and analyticity.
Hadronic Decays of the tau Lepton. Type: Invited Oral Session: tau-lepton.
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Several experimental collaborations have recently invested considerable effort in precision studies of hadronic tau decays. With further improvements expected at Belle-II, it is important to discuss the theoretical implications of these experimental advances. In this talk, I will review several such implications. First, we will show that hadronic tau decays represent a clean laboratory for the In this presentation we will focus on the two-photon physics program, which is dedicated to the measurement of T Type: Poster Session: Baryon formfactors.
Neutron passing through the detector systems does not interact with the calorimeter and can not be registered. Antineutron annihilates in the calorimeter and as a result of the interaction a number of new particles are born, which can be registered. Near the production threshold antineutrons have a relatively low Type: Invited Oral Session: Mesons of light quarks.
The experimental results are compared with a fit based on the vector-meson-dominance model. The method of this experiment is independent of Fermilab's experiment, and a low-emittance muon beam and a factor of 20 smaller muon storage magnet are utilized. A new muon beam LHCb status and plans. This talk will present a status overview of ongoing LHCb upgrade. A crucial part of the upgrade is the software-only trigger, which should be able to select the desired events at 30MHz input rate with up to six visible interactions per bunch crossing.
Leptonic decays of the tau lepton. Tianjue MIN on 27 Feb at In recent years, the spectroscopy of hadrons containing heavy quarks has brought forward a plethora of new and unexpected resonance-like signals. Similar studies in the light-quark sector are more challeng Light mesons from JPAC analyses.
Identifying properties of excited hadronic states in the light meson sector remains an ongoing challenge, due to large widths, significant overlaps, and multiple decay channels of the resonances. A systematic approach using the unitarity-based coupled channel frameworks is required; for the reaction-independent determination of the resonance parameters, the pole positions of the resonances need t Its semilep- tonic decays provide a privileged scenario to study low-energy effects of the strong interactions under rather clean conditions. Such advantageous framework is used to improve our understanding of the hadronization of QCD currents, to study meson form factors and to extract the physical parameters of the intermediate Dimuonium radius is times smaller than positronium; therefore, it has a higher new-physics reach potential in Luminosity measurement with the CMD-3 detector.
Preliminary r Antiproton-Proton Formation of Charmonium States. Lear, Past, Present and Near Future. European Hadron Facility. Scheck, F. Bradamante, J. Back Matter Pages The first course in covered topics related to fundamental symmetries.
Quarkonium - Wikipedia
This book contains the proceedings of the second course which focused on spectroscopy of light and heavy quarks. In the following table, the same particle can be named with the spectroscopic notation or with its mass. That is, names in the same cell are synonymous. Some of the states are predicted, but have not been identified; others are unconfirmed. In , the BaBar experiment announced the discovery of a new state: Y At first, Y was thought to be a charmonium state, but the evidence suggests more exotic explanations, such as a D "molecule", a 4-quark construct, or a hybrid meson.
The article about this discovery was first submitted to arXiv on 21 December The theta meson is not expected to be physically observable, as top quarks decay too fast to form mesons. The computation of the properties of mesons in Quantum chromodynamics QCD is a fully non-perturbative one. The light quarks in a meson move at relativistic speeds, since the mass of the bound state is much larger than the mass of the quark.
However, the speed of the charm and the bottom quarks in their respective quarkonia is sufficiently smaller, so that relativistic effects affect these states much less. It is estimated that the speed, v , is roughly 0. Good agreement with the bottomonium masses has been found, and this provides one of the best non-perturbative tests of LQCD. For charmonium masses the agreement is not as good, but the LQCD community is actively working on improving their techniques. Work is also being done on calculations of such properties as widths of quarkonia states and transition rates between the states.
An early, but still effective, technique uses models of the effective potential to calculate masses of quarkonia states. In this technique, one uses the fact that the motion of the quarks that comprise the quarkonium state is non-relativistic to assume that they move in a static potential, much like non-relativistic models of the hydrogen atom.
One of the most popular potential models is the so-called Cornell or funnel potential. This potential has two parts.