B0-anti-B0 mixing in quenched lattice QCD
Physical Review D Volume 67 Issue 1
Page 014506-
published_at 2003-01
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| File | |
| Title ( eng ) |
B0-anti-B0 mixing in quenched lattice QCD
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| Creator |
Aoki S.
Fukugita M.
Hashimoto S.
Ishizuka N.
Iwasaki Y.
Kaneya K.
Kaneko T.
Kuramashi Y.
Onogi T.
Tsutsui N.
Ukawa A.
Yamada N.
Yoshie T.
JLQCD Collaboration
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| Source Title |
Physical Review D
|
| Volume | 67 |
| Issue | 1 |
| Start Page | 014506 |
| Abstract |
We present our results of lattice calculations of B parameters, which parametrize ΔB=2 transition amplitudes together with the leptonic decay constant. Calculations are made in the quenched approximation at β=5.7, 5.9, 6.0 and 6.1, using NRQCD action for heavy quarks and the O(a)-improved Wilson action for light quarks. The operators are perturbatively renormalized including the correction of O(αs/(aM)m) (m>~0). We examine the scaling behavior of B parameters, and discuss the systematic uncertainties based on the results with several different truncations of higher order terms in 1/M and αs expansions. We find BBd(mb)=0.84(3)(5), BBs/BBd=1.020(21)(+15-16)(+5-0) and BSs(mb)=0.85(1)(5)(+1-0) in the quenched approximation. The errors represent statistical and systematic errors as well as the uncertainty in the determination of strange quark mass.
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| Keywords |
B0-anti-B0
B parameter
NRQCD
O(a)-improved Wilson action
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| NDC |
Physics [ 420 ]
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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 | 2003-01 |
| Rights |
Copyright (c) 2003 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.67.014506
[DOI] http://dx.doi.org/10.1103/PhysRevD.67.014506
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