Lattice calculation of SU(3) flavor breaking ratios in B{sup 0}-B{sup 0} mixing

Journal Article · Thu Dec 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.114504· OSTI ID:20774445

Gadiyak, Valeriya; Loktik, Oleg ^[1]

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1. Physics Department, Columbia University, New York, New York 10027 (United States)

We present an unquenched lattice calculation for the SU(3) flavor breaking ratios of the heavy-light decay constants and the {delta}B=2 matrix elements. The calculation was performed on 16{sup 3}x32 lattices with two dynamical flavors of domain-wall quarks and inverse lattice spacing 1/a=1.69(5) GeV. Heavy quarks were implemented using an improved lattice formulation of the static approximation. In the infinite heavy-quark mass limit we obtain f{sub B{sub s}}/f{sub B{sub d}}=1.29(4)(6), B{sub B{sub s}}/B{sub B{sub d}}=1.06(6)(4), {xi}=1.33(8)(8) where the first error is statistical and the second systematic.

• OSTI ID: 20774445
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
B NEUTRAL MESONS
B QUARKS
C QUARKS
ERRORS
FLAVOR MODEL
GEV RANGE
LATTICE FIELD THEORY
MATRIX ELEMENTS
PARTICLE DECAY
REST MASS
SU-3 GROUPS
SYMMETRY BREAKING
T QUARKS