Width difference in the Bs-B̅s system with lattice nonrelativistic QCD
Physical Review D Volume 62 Issue 3
Page 034504-1-034504-8
published_at 2000-07-10
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| File | |
| Title ( eng ) |
Width difference in the Bs-B̅s system with lattice nonrelativistic QCD
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| Creator |
Hashimoto Shoji
Ishikawa Ken-Ichi
Onogi Tetsuya
Yamada Norikazu
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| Source Title |
Physical Review D
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| Volume | 62 |
| Issue | 3 |
| Start Page | 034504-1 |
| End Page | 034504-8 |
| Abstract |
We present a lattice calculation of the Bs-B̅s transition-matrix element through a four-quark operator OS = b̅ (1-γ5)sb̅ (1-γ5)s, which gives a leading contribution in the calculation of the width difference ΔΓs in the 1/mb expansion. The nonrelativistic QCD formulation is used to describe b quark on the lattice. Using the next-to-leading formula of Beneke et al., we obtain (ΔΓ/Γ)s=0.151(37)(45)(17), where the first error reflects the uncertainty of the Bs meson decay constant, the second error comes from our calculation of the matrix element of OS, and the third represents an unknown 1/mb correction.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2000-07-10 |
| Rights |
Copyright (c) 2000 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.62.034504
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.62.034504
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