Conveners
Hadrons in medium - hyperons and mesons in nuclear matter
- Janus Weil (FIAS)
Hadrons in medium - hyperons and mesons in nuclear matter
- Janus Weil (FIAS)
Hadrons in medium - hyperons and mesons in nuclear matter
- Jia-Chii Berger-Chen (Excellence Cluster Universe, TU München)
catalina Circeanu
(LNF-INFN)
25/08/2014, 14:00
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
The low-energy QCD in the strangeness sector is still lacking fundamental experimental results in order to achieve a breakthrough in its understanding. Among these experimental results, the low-energy kaon-nucleon/nuclei interaction studies are playing a key-role.
Combining the excellent quality kaon beam delivered by the DAFNE collider with new experimental techniques, as fast and very...
J. Haidenbauer
(Forschungszentrum Jülich)
25/08/2014, 14:25
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
Recently, a hyperon-nucleon (YN) interaction has been derived
up to next-to-leading order in chiral effective field theory by
the Jülich-Bonn-Munich group. At that order there are contributions
from one- and two-pseudoscalar-meson exchange diagrams and from
four-baryon contact terms without and with two derivatives.
SU(3) flavor symmetry is imposed for constructing the YN interaction...
Dr
Alicia Sanchez-Lorente
(HIM)
25/08/2014, 14:50
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
PANDA is a key experiment of the FAIR facility in Darmstadt. It will study fundamental questions of hadron physics and QCD by exploring interactions between an antiproton beam and a fixed proton or nuclear target. Because of the relative large production cross section of hyperon-antihyperon pairs in
antiproton-nucleus collisions, PANDA will be an ideal instrument to study hyperons and...
Dr
Tadashi Hashimoto
(RIKEN)
25/08/2014, 15:15
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
The investigation of antikaon(Kbar) nuclear bound states is one of the hottest topics in strangeness nuclear physics since observations of such states give quite unique information on the sub-threshold KbarN interaction[1]. However, the existence of Kbar nuclear-states has not been established so far, even for the simplest system, K ̄pp[2].
Our approach is to search for the K ̄pp bound...
Mrs
Jia-Chii Berger-Chen
(Excellence Cluster Universe, TU München)
25/08/2014, 16:30
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
The understanding of p+p reactions is fundamental for the interpretation of p+A and also heavy-ion collisions, in which in-medium modifications of hadrons are expected with increasing nuclear matter density. Such modifications can be investigated by comparisons of experimental data to transport models [1,2,3]. Hence, the models should be able to reproduce elementary reactions at the first...
Prof.
Volodymyr Magas
(University of Barcelona)
25/08/2014, 16:55
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
We study the meson-baryon interaction in S-wave in the strangeness S=-1 sector using a chiral SU(3) Lagrangian extended to next-to-leading order (NLO). Our model has 7 new parameters, which have to do with NLO terms in the chiral Lagrangian, and which are fitted to the large set of experimental data available for different two-body channels. We pay particular attention to the K- p --> K...
Yoshiki K. Tanaka
(University of Tokyo)
25/08/2014, 17:20
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
We plan a missing-mass spectroscopy experiment of eta’ mesic nuclei to study in-medium properties of the eta' meson. The large mass of the eta’ meson compared to the other pseudoscalar mesons is explained by the axial anomaly effect. Since this effect on the eta’ mass is associated with spontaneous breaking of chiral symmetry, in the nuclear medium, where chiral symmetry is partially restored,...
Dr
Kirill Lapidus
(TU München)
25/08/2014, 17:45
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
The standard model of particle physics contains three generations of quarks, whereas most of the matter is built out of quarks from the first generation, the up- and down-quarks. Nevertheless, strange quarks confined in hyperons can play an important role for example in compact astrophysical objects. Calculations show, that it is likely that hyperons appear at large nuclear densities which are...
Dr
Shinji Okada
(RIKEN)
26/08/2014, 14:00
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
High-resolution x-ray spectroscopies of hadronic atoms will be performed with an x-ray spectrometer based on an array of superconducting transition-edge-sensor (TES) microcalorimeters which have achieved remarkable development in recent years [1]. The instrument offers unprecedented full-width-at-half-maximum energy resolutions of 2 - 3 eV at 6 keV being two order of magnitude improved...
Dr
Ales Cieply
(Nuclear Physics Institute, Rez near Prague)
26/08/2014, 14:24
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
We analyze the $\bar{K}N$ and $\eta N$ interactions using an effective separable potential coupled channels model that implements chiral symmetry [1], [2]. The energy dependence of both the $\bar{K}N$ and $\eta N$ scattering amplitudes is strongly affected by dynamically generated resonances close to the meson-baryon thresholds, the $\Lambda(1405)$ and $N^{\star}(1535)$, respectively. We...
Dr
Janus Weil
(FIAS)
26/08/2014, 14:48
10) Hadrons in medium - hyperons and mesons in nuclear matter
Talk
We investigate dilepton production at SIS and SPS energies in transport-based approaches and show that the baryon couplings of the rho meson represent the most important ingredient for understanding the measured dilepton spectra. At lower energies, the baryon resonances naturally play a larger role and affect already the vacuum spectra via Dalitz-like contributions, which can be captured well...
