http://swrc.ontoware.org/ontology#Article
Heavy quark expansion parameters from lattice NRQCD
en
Aoki S.
Fukugita M.
Hashimoto S.
Ishikawa K.-I.
Ishizuka N.
Iwasaki Y.
Kanaya K.
Kaneko T.
Kuramashi Y.
Okawa M.
Tsutsui N.
Ukawa A.
Yamada N.
Yoshié T.
岩崎 洋一
宇川 彰
We present a lattice QCD calculation of the heavy quark expansion parameters µpi2 and µG2 for heavy-light mesons and heavy-light-light baryons. The calculation is carried out on a 203×48 lattice at beta=6.0 in the quenched approximation, using the lattice NRQCD action for heavy quarks. We obtain the parameters µpi2 and µG2 in two different methods: a direct calculation of the matrix elements and an indirect calculation through the mass spectrum, and confirm that both the methods give consistent results. We also discuss an application to the lifetime ratios.
Physical review D
69
9
2004-05
0556-2821
AA00773624
10.1103/PhysRevD.69.094512
©2004 The American Physical Society
application/pdf
物理学
American Physical Society
http://hdl.handle.net/2241/89319