ar X iv : h ep - l at / 0 01 10 64 v 2 1 5 N ov 2 00 0 1 Heavy quark physics on the lattice

نویسنده

  • C. Bernard
چکیده

I review the current status of lattice calculations of the properties of bound states containing one or more heavy quarks. Many of my remarks focus on the heavy-light leptonic decay constants, such as fB, for which the systematic errors have by now been quite well studied. I also discuss B-parameters, semileptonic form factors, and the heavy-light and heavy-heavy spectra. Some of my " world averages " are: fB = 200(30) MeV, fBˆBB d = 230(40) MeV, fB s /fB = 1.16(4) and fB s ˆ BB s / fBˆBB d = 1.16(5).

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ar X iv : h ep - l at / 0 41 10 36 v 1 2 5 N ov 2 00 4 Progress Towards finding Quark Masses and the QCD scale Λ from the Lattice

We discuss recent work trying to extract the renormalised quark masses and Λ, the QCD scale, from dynamical simulations in lattice gauge theory.

متن کامل

ar X iv : h ep - l at / 0 01 10 08 v 2 1 3 N ov 2 00 0 1 Differential decay rate for B →

We present our study on B → πlν semileptonic decay form factors using NRQCD action for heavy quark. In the analysis, we use the form factors f1(v · kπ) and f2(v · kπ) defined in the context of heavy quark effective theory by Burdman et al.. Since the NRQCD action for heavy quark respects the heavy quark symmetry, our results are described by the HQET form factors most naturally. From a quenched...

متن کامل

ar X iv : h ep - l at / 0 01 10 08 v 1 1 N ov 2 00 0 1 Differential decay rate for B → πlν semileptonic decays ∗

We present our study on B → πlν semileptonic decay form factors using NRQCD action for heavy quark. In the analysis, we use the form factors f1(v · kπ) and f2(v · kπ) defined in the context of heavy quark effective theory by Burdman et al.. Since the NRQCD action for heavy quark respects the heavy quark symmetry, our results are described by the HQET form factors most naturally. From a quenched...

متن کامل

ar X iv : h ep - l at / 0 01 10 11 v 1 1 N ov 2 00 0 1 Domain wall fermion calculation of nucleon

We present a preliminary domain-wall fermion lattice-QCD calculation of isovector vector and axial charges, g V and g A , of the nucleon. Since the lattice renormalizations, Z V and Z A , of the currents are identical with DWF, the lattice ratio (g A /g V ) directly yields the continuum value. Indeed Z V determined from the matrix element of the vector current agrees closely with Z A from a non...

متن کامل

ar X iv : h ep - l at / 0 01 00 56 v 1 2 8 O ct 2 00 0 1 Perturbative renormalization of the ∆ B = 2 four - quark operators in lattice

We present a perturbative calculation of the renormalization constants for the ∆B = 2 four-quark operators, which is needed to evaluate the bag parameters BB and BS in lattice QCD. The one-loop coefficients are calculated for the O(1/M) NRQCD heavy quark action and the O(a)-improved Wilson action for light quark. Using these coefficients, which remove O(αs/aM) error, we reanalyze our previous c...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2000