Speaker
Prof.
Carleton DeTar
(University of Utah)
Description
We present preliminary simulation results for the I = 0 charmonium state X(3872)(1++) and the I = 1 charmonium state Zc(3900)(1+-). The study is performed on (2+1+1)-flavor highly improved staggered quark (HISQ) lattices with clover (Fermilab interpretation) charm quarks and HISQ light quarks. Since the X(3872) lies very close to the open charm D-bar-D* threshold, we use a combination of c-bar-c and D-bar-D* interpolating operators. For the Zc(3900) we use a combination of J/psi-pi and D-bar-D* channels.
This is the first such study with HISQ light valence quarks. To this end, we describe a variational method for treating staggered quarks that provides for both oscillating and non-oscillating components.
Primary authors
Prof.
Carleton DeTar
(University of Utah)
Song-Haeng Lee
(University of Utah)
Co-authors
Prof.
Aida El-Khadra
(University of Illinois)
Dr
Alexei Bazavov
(University of Iowa)
Dr
Andreas Kronfeld
(Fermilab)
Prof.
Claude Bernard
(Washington University St. Louis)
Dr
Daniel Mohler
(Fermilab)
Dr
Daping Du
(Syracuse University)
Prof.
Doug Toussaint
(University of Arizona)
Dr
Elizabeth Freeland
(Art Institute of Chicago)
Prof.
Elvira Gamiz
(University of Granada)
Prof.
Ethan Neil
(University of Colorado, Boulder)
Dr
Heechang Na
(University of Utah)
Prof.
Jack Laiho
(Syracuse University)
Dr
James Osborn
(ANL)
Dr
James Simone
(Fermilab)
Dr
Javad Komijani
(Washington University in St. Louis)
Dr
Ludmila Levkova
(University of Utah)
Nathan Brown
(Washington University in St. Louis)
Dr
Paul Mackenzie
(Fermilab)
Dr
Ran Zhou
(Fermilab)
Prof.
Robert Sugar
(University of California, Santa Barbara)
Dr
Ruth Van de Water
(BNL)
Prof.
Stephen Gottlieb
(University of Indiana)
Dr
Thomas Primer
(University of Arizona)
Dr
Urs Heller
(American Physical Society)
