Heavy quark expansion parameters from lattice NRQCD
Physical Review D Volume 69
Page 094512-
published_at 2004
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| File | |
| Title ( eng ) |
Heavy quark expansion parameters from lattice NRQCD
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| Creator |
JLQCD Collaboration
Aoki S
Fukugita M
Hashimoto S
Ishizuka N
Iwasaki Y
Kanaya K
Kaneko T
Kuramashi Y
Tsutsui N
Ukawa A
Yamada N
Yoshié T
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| Source Title |
Physical Review D
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| Volume | 69 |
| Start Page | 094512 |
| Abstract |
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.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The American Physical Society
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| Date of Issued | 2004 |
| Rights |
Copyright (c) 2004 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] http://dx.doi.org/10.1103/PhysRevD.69.094512
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