Quenched Chiral Perturbation Theory for Heavy-Light Mesons

Details Quenched Chiral Perturbation Theory for Heavy-Light Mesons Quenched Chiral Perturbation Theory for Heavy-Light Mesons

1994-11-30

arxiv.org/abs/hep-ph/9411433v2

Phys.Rev.D51:2338-2346,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex, 4 postscript figures (included seperately). Complete postscript available in http://www.phys.ufl.edu/~booth/p

Scientific paper

10.1103/PhysRevD.51.2338

Quenched chiral perturbation theory is extended to include heavy-light mesons. Non-analytic corrections to the decay constants, Isgur-Wise function and masses and mixing of heavy mesons are then computed. The results are used to estimate the error due to quenching in lattice computations of these quantities. For reasonable choices of parameters, it is found that quenching has a strong effect on $f_{B_s}/f_B$, reducing it by as much as $28\%$. The errors are essentially negligible for the Isgur-Wise function and the mixing parameter.

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