Burch, Tommy and Gattringer, Christof and Glozman, Leonid Ya. and Hagen, Christian and Lang, C. B. and Schäfer, Andreas
Excited hadrons on the lattice: Mesons.
Physical Review D 73, 094505.
Other URL: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRVDAQ000073000009094505000001&idtype=cvips&gifs=yes
We present results for masses of excited mesons from quenched calculations using chirally improved quarks at pion masses down to 350 MeV. The key features of our analysis are the use of a matrix of correlators from various source and sink operators and a basis which includes quark sources with different spatial widths, thereby improving overlap with states exhibiting radial excitations.