ar X iv : h ep - l at / 9 60 90 07 v 1 3 1 A ug 1 99 6 1 The Staggered η ′ with Smeared Operators

نویسنده

  • J. Grandy
چکیده

We present a refined calculation of the η ′ mass using staggered fermions and Wuppertal smeared operators to suppress excited state contributions. We use quenched and dynamical configurations of size 16 3 × 32, with N f = 0, N f = 2 and N f = 4, and compare our results with the expected theoretical forms from quenched, partially quenched, and unquenched chiral perturbation theory.

برای دانلود 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 / 9 60 90 06 v 1 3 1 A ug 1 99 6 1

We present results of a study of BK using tadpole improved gauge-invariant staggered operators. Using three ensembles of 16 3 × 32 configurations with varying numbers of dynamical flavors, we observe a small dependence on N f. Using 7 quenched ensembles at different values of β, we extrapolate to a = 0.

متن کامل

ar X iv : h ep - l at / 9 60 80 64 v 1 1 3 A ug 1 99 6 1

We present results for the spectrum and decay constants of B mesons from NRQCD using dynamical configurations at β = 5.6 with two flavours of staggered fermions. The light quarks are generated using the Clover action with tadpole improvement.

متن کامل

ar X iv : h ep - l at / 9 60 80 69 v 1 1 3 A ug 1 99 6 1 Calculation of Moments of Nucleon Structure Functions ∗

Preliminary results are presented in our program to calculate low moments of structure functions for the proton and neutron on a 24 3 × 32 lattice at β = 6.2. A comparison is made for a variety of smeared nucleon sources and preliminary results for the calculation of the nucleon tensor charge are presented.

متن کامل

ar X iv : h ep - l at / 9 60 80 65 v 1 1 3 A ug 1 99 6 1 Forces between composite particles in QCD

Starting from the meson-meson Green function in 3+1 dimensional quenched lattice QCD we calculate potentials between heavy-light mesons for various light-quark mass parameters. For the valence quarks we employ the staggered scheme. The resulting potentials turn out to be short ranged and attractive. A comparison with a tadpole improved action for the gauge fields is presented.

متن کامل

ar X iv : h ep - l at / 9 90 70 19 v 1 2 3 Ju l 1 99 9 Staggered Fermions and Gauge Field Topology

Based on a large number of smearing steps, we classify SU(3) gauge field configurations in different topological sectors. For each sector we compare the exact analytical predictions for the microscopic Dirac operator spectrum of quenched staggered fermions. In all sectors we find perfect agreement with the predictions for the sector of topological charge zero, showing explicitly that the smalle...

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

برای دانلود 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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996