15-19 June 2015
Asia/Novosibirsk timezone
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Resonances and exclusive processes

Date: 18 Jun 08:00 - 14:05

Conveners

    • Prof. Achasov, Nikolay (Sobolev Institute for Mathematics)
    • Dr. Friedrich, Jan (TU München)
    • Dr. Nyffeler, Andreas (Institute of Nuclear Physics, University of Mainz, Germany)

Timetable | Contribution List

Displaying 14 contributions out of 14
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
Enfant terrible of charmonium spectroscopy, the resonance X(3872), generated a stream of interpretations and ushered in a new exotic XYZ spectroscopy. In the meantime, many (if not all) characteristics of X(3872) are rather ambiguous. We construct spectra of decays of the resonance X(3872) with good analytical and unitary properties which allow to define the branching ratio of the X(3872) $\ ... More
Presented by Prof. Nikolay ACHASOV, Ms. Elizaveta ROGOZINA on 18/6/2015 at 5:20
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
Branching fractions of decays of heavy quarkonia $\psi(3770)$, $psi(4040)$, and $\Upsilon(10580)$ to the states $\pi^+\pi^-$, $K\bar K$, $\omega\pi^0$, $\omega\eta$, $\omega\eta^\prime$, $\rho\eta$, $\rho\eta^\prime$, $K^\ast\bar K+c.c.$, $\rho^+\rho^-$, $K^\ast\bar K^\ast$ etc are evaluated in the model of the Okubo - Zweig - Iizuka rule violation due to the real intermediate states of mesons wit ... More
Presented by Dr. Arkadii KOZHEVNIKOV on 18/6/2015 at 5:50
Presented by Dr. Boris GRUBE on 18/6/2015 at 3:00
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
The ratio of the exclusive electroproduction of psi(2S) and J/psi mesons has been measured at HERA. The results are sensitive to the wave functions of the vector mesons and are compared to predictions of QCD-inspired models of vector-meson production. Exclusive dijet production in diffractive deep inelastic scattering has been measured at HERA. Cross sections are presented as a function ... More
Presented by Dr. Olga LUKINA on 18/6/2015 at 3:20
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
We summarize results of light-quark meson studies for spectroscopy and their particle properties in two-photon processes at the Belle experiment. We report on dozens of different meson-state formation processes in the mass region, 0.9 - 2.6 GeV.
Presented by Dr. Sadaharu UEHARA on 18/6/2015 at 2:00
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
Rainer Schicker for the ALICE collaboration Heavy-ion beams at high energy generate large photon fluxes which result in a variety of photon-hadron and photon-photon processes with large cross sections. The ALICE experiment at CERN is well suited to measure such reaction channels in the central barrel as well as in the forward muon spectrometer. The ALICE results from Run I of the LHC are ... More
Presented by Dr. Rainer SCHICKER on 18/6/2015 at 4:30
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
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Presented by Mrs. Patricia REBELLO TELES on 18/6/2015 at 3:40
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
COMPASS is a multi-purpose experiment operated at CERN for investigations of the strong interaction from low to highest energy scales. At low energies, photon-pion interactions provide input for understanding the effective dynamics of strongly bound states of quarks and gluons, mostly prominently the recent measurement of the polarisability of the charged pion. At higher energies, the meson reson ... More
Presented by Dr. Jan FRIEDRICH on 18/6/2015 at 2:40
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
The model of coherent $\pi^0\pi^0$ mesons photoproduction on simplest nuclei of hydrogen and deiterium in the region $E_{\gamma}\le1.4$ GeV is presented. Two pion rescattering amplitude in process $\pi^+\pi^-\to\pi^0\pi^0$ is taken into account from phenomenological fit is accurately defined it in treshold region as well as up to 1100 MeV relative energy in $\pi\pi$ c.m. Strong depen ... More
Presented by Mr. Mikhail EGOROV on 18/6/2015 at 5:05
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
The decay eta' ->e+e- has been searched for at the VEPP-2000 e+e- collider with the SND detector using the reaction e+e- -> eta'. The following upper limits have been set at the 90% CL: Gamma(eta' -> e+e-) < 0.0020 eV and B(eta' -> e+e-) < 10^-8. Sensitivity of VEPP-2000 for measurement of the e+e- -> eta cross section has been studied.
Presented by Dr. Aleksey BERDYUGIN on 18/6/2015 at 4:50
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
The Initial State Radiation (ISR) method in the Babar experiment has been used to measure the timelike electromagnetic form factors at the momentum transfer from 9 to 42 GeV2 for protons and from 7 to 56 GeV2 for charged kaons. The obtained data show the tendency to approach the QCD asymptotic prediction for kaons and spacelike form factors values for proton.
Presented by Prof. Sergey SEREDNYAKOV on 18/6/2015 at 2:20
Presented by Dr. Christoph HANHART on 18/6/2015 at 7:45
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
The prediction of the cross section $\sigma(\gamma\gamma^*(Q^2)\to \eta\pi^0)$ based on the simultaneous description of the Belle data on the $\gamma\gamma\to \eta\pi^0$ reaction and the KLOE data on the $\phi\to\eta\pi^0\gamma$ decay is presented.
Presented by Dr. Alexey KISELEV on 18/6/2015 at 7:30
Type: Oral presentation Session: Resonances and exclusive processes
Track: Resonances and exclusive processes
We elucidate the possible mechanism of the isospin breaking decay $\eta(1405)\to f_0(980)\pi^0\to\pi^+\pi^-\pi^0$.
Presented by Dr. Georgii SHESTAKOV on 18/6/2015 at 5:35
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