Conveners
e+e– annihilation and gamma–gamma physics
- Frank Nerling (GU Frankfurt, GSI Darmstadt)
- Simon Eidelman (Budker Institute of Nuclear Physics)
Prof.
Mikhail Achasov
(BINP)
27/02/2019, 14:50
R measurements
Invited Oral
Recent results on e+e- annihilation to hadrons from SND
experimnet at VEPP-2000 collider are presented. Corresponding data set is
about 80 pb-1 of integrated luminosity collected at sqrt{s} below 2 GeV.
Dr
Francesca Curciarello
(INFN-Laboratori Nazionali di Frascati)
27/02/2019, 15:10
Spectroscopy of light and heavy quarks
Invited Oral
The KLOE-2 experiment at the Frascati φ−factory ended last year collecting
more than 5 fb$^{−1}$ at the φ peak. The new data sample together with the KLOE
one corresponds to $2.4 ×10^{10}$ φ and $3.1 × 10^8$ η meson events. It represents the
largest sample ever collected at the φ peak in $e^+ e^-$ colliders allowing to study
light mesons with unprecedented statistics.
Recent results...
Dr
Elisabetta Prencipe
(Forschungszentrum Juelich)
27/02/2019, 15:30
Gamma-gamma physics
Invited Oral
The Belle experiment has measured various two-photon physics processes, mostly using
a no-tag method, and for a few of them also a single-tag technique. This way to analyze physics
processes is useful to investigate transition form factors, as well as search for XYZ exotic
states and baryons. A review of the main achievements at Belle will be given, and recent
results will be shown.
Dr
Christoph Florian Redmer
(Institute for Nuclear Physics, Johannes Gutenberg-University Mainz)
27/02/2019, 15:50
Gamma-gamma physics
Invited Oral
Motivated by the need of experimental input to improve the Standard Model prediction of the anomalous magnetic moment of the muon $a_\mu$, the BESIII collaboration started a dedicated program to measure hadronic cross sections as well as transition form factors (TFF) with high accuracy. In this presentation we will focus on the two-photon physics program, which is dedicated to the measurement...
Korneliy Todyshev
(BINP)
27/02/2019, 16:30
R measurements
Invited Oral
KEDR measured the R values at twenty two center-of-mass energies
between 1.84 and 3.72 GeV. This result provides the most precise information about R in this energy range. We present results mentioned above
as well as prospects for R measurement with VEPP-4M collider at KEDR experiment.
Prof.
Haiming Hu
(IHEP， CAS)
27/02/2019, 16:50
R measurements
Invited Oral
Using data samples collected with BESIII detector operating at BEPCII storage ring,
the R value is measured at 14 energy points from the center-of-mass energies 2.2324
to 3.671 GeV. This talk gives the descriptions and information for the data analysis,
the calculations of the initial state radiations and generators simulations.
(The average uncertainty of 14 R values is about 3%,...
Mr
Evgeny Kozyrev
(BINP)
27/02/2019, 17:10
R measurements
Invited Oral
A program of measuring the light hadrons production in exclusive e+e− \to hadrons processes is in place at BABAR, with the aim to improve the calculation of the hadronic contribution to the muon g−2. We present the most recent results obtained by using the full data set of about 470 fb−1 collected by the BABAR experiment at the PEP-II e+e− collider at a center-of-mass energy of about 10.6 GeV....
Prof.
Bernhard Ketzer
(University of Bonn)
27/02/2019, 17:30
Spectroscopy of light and heavy quarks
Invited Oral
In recent years, the spectroscopy of hadrons containing heavy quarks has brought forward a plethora of new and unexpected resonance-like signals. Many of these so-called $X$, $Y$,$Z$ states are candidates for states beyond the quark-antiquark configurations of mesons, which have been sought after since the introduction of the quark model. Similar studies in the light-quark sector are more...
Dr
Dmitry Ryabchikov
(Institute for High Energy Physics)
27/02/2019, 17:50
Spectroscopy of light and heavy quarks
Invited Oral
Diffractive production of $\pi^+\pi^-\pi^-$ and $\pi^-\pi^0\pi^0$ final states
are subjects of comprehensive studies performed recently by VES and COMPASS experiments.
The $3\pi$ states are produced at VES by 29 GeV/c $\pi^-$ beam on Be target
( $87x10^6$ $\pi^+\pi^-\pi^-$ events and $32x10^6$ $\pi^-\pi^0\pi^0$ events analyzed at 0 < t' < 1 GeV/c$^2$).
At COMPASS $3\pi$ states are...
