Ying Chen
(Institute of High Energy Physics, Chinese Academy of Sciences, China)
15/06/2010, 08:30
Hadron spectroscopy
In the quenched approximation, glueball-vector-current-Jpsi three point functions are calculated on an anisotropic lattice with very high statistics. Using the relevant form factors derived from these three point functions, we also give a prediction of the radiative decay widths of J/psi to scalar and pseudoscalar glueballs.
Xu Feng
(NIC, DESY)
15/06/2010, 08:50
Hadron spectroscopy
We calculate the P-wave pion-pion scattering phase in the rho decay channel using two flavors of maximally twisted mass fermions at pion masses ranging from 290 MeV to 480 MeV and lattice spacings of 0.079 fm and 0.063 fm. Making use of finite-size methods, we evaluate the pion-pion scattering phase in the center-of-mass frame and two moving frames. Using all three frames, we find a good...
Naruhito Ishizuka
(University of Tsukuba)
15/06/2010, 09:10
Hadron spectroscopy
We present our results of the $\rho$ meson decay width
estimated from the scattering phase shift
for $I=1$ two pion system.
Calculations are carried out with
$N_f=2+1$ gauge configurations previously generated
by the PACS-CS Collaboration
with the Iwasaki gauge action and nonperturbatively
$O(a)$-improved Wilson fermion
at $m_\pi/m_\rho=0.46$ on $32\times 64$ ($La=2.9 fm$).
The...
Pietro Giudice
(Trinity College Dublin)
15/06/2010, 09:30
Hadron spectroscopy
Monte Carlo simulations of the 4d O(4) model in the broken phase
are performed to determine the parameters of a resonance.
We discuss the applicability of a method, based on the probability
distribution concept, useful in the realistic case of a large width resonance.
The application to study the QCD hadron spectrum is discussed.
Darrán McManus
(Trinity College, Dublin, Ireland)
15/06/2010, 09:50
Hadron spectroscopy
The standard method for extracting resonance parameters on the lattice is
through Luscher's formula. We study the application of this formula to the
4d O(4) sigma model and contrast it with the recently proposed probability
distribution method.
Connections to resonances in QCD are discussed.
