Speaker
Dr
Padmanath Madanagopalan
(University of Graz)
Description
I will discuss recent lattice study of charmonium-like mesons with
$J^{PC}=1^{++}$ and three quark contents $\bar cc\bar du$,
$\bar cc(\bar uu + \bar dd)$ and $\bar cc\bar ss$, where the latter
two can mix with $\bar cc$. In this quantum channel, the long known
exotic candidate, X(3872), resides. This simulation employs $N_f=2$,
$m_\pi=266~$MeV and a large basis of $\bar cc$, two-meson and
diquark-antidiquark interpolating fields, with diquarks in both
anti-triplet and sextet color representations. It aims at the
possible signatures of four-quark exotic states. Along the way, I
will discuss the relations between the diquark-antidiquark operators
and the two-meson operators via the Fierz transformations.
Primary author
Dr
Padmanath Madanagopalan
(University of Graz)
Co-authors
Prof.
C. B. Lang
(University of Graz)
Dr
Sasa Prelovsek
(University of Ljubljana, Ljubljana; Jozef Stefan Institute, Ljubljana; Jefferson Lab, US)
