ar X iv : h ep - l at / 0 11 01 63 v 2 2 2 O ct 2 00 1 1 Spectral density calculations in a heavy - light meson - meson system ∗

نویسنده

  • H. R. Fiebig
چکیده

A system of two static quarks, at fixed distances r, and two light quarks is studied on an anisotropic lattice. Excitations by operators emphasizing quark or gluon degrees of freedom are examined. The maximum entropy method is applied in the spectral analysis. These simulations ultimately aim at learning about mechanisms of hadronic interaction.

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 11 20 10 v 1 7 D ec 2 00 1 1 Excitation Spectra in a Heavy - Light Meson - Meson System ∗

A system of two static quarks, at fixed distances r, and two light quarks is studied on an anisotropic lattice. Excitations by operators emphasizing quark or gluon degrees of freedom are examined. The maximum entropy method is applied in the spectral analysis. These simulations ultimately aim at learning about mechanisms of hadronic interaction.

متن کامل

ar X iv : h ep - l at / 0 61 01 08 v 1 1 9 O ct 2 00 6 Λ̄ , λ 1 and m b in three - flavor ( lattice ) QCD

The heavy-quark expansion for inclusive semi-leptonic B decays introduces Λ̄ and λ1, which are matrix elements in heavy-quark effective field theory. We review how they can be obtained from an analysis of the heavy quark mass dependence of heavy-light meson masses in lattice QCD. We present preliminary results for the bottom quark mass, mb, using Λ̄ and λ1 for the Bs meson from a 2+1 sea-flavor u...

متن کامل

ar X iv : h ep - l at / 0 01 00 29 v 1 1 7 O ct 2 00 0 1 Can One Study Heavy Meson Semileptonic Decays on Coarse Anisotropic Lattices ?

Semileptonic decays of heavy mesons into light hadrons such as, B → π lν or B → ρ lν, involve hadrons with sizeable momenta, once one moves away from the zero-recoil point at q ≡ (p − p) = q max. “pμ” is the momentum of the decaying heavy meson and “pμ” that of the light daughter meson. High momenta introduce both noise and ap discretization errors into lattice simulations making calculations o...

متن کامل

ar X iv : h ep - l at / 0 01 10 13 v 1 1 N ov 2 00 0 1 Chemical potential response of heavy light meson mass

We study the response of the heavy-light meson mass to the chemical potential (∂m/∂µ) at high temperature and at zero chemical potential. Preliminary results show that ∂m/∂µ|µ=0 is negative in the confinement phase and is positive in the deconfinement phase. This may suggest the possibility for the suppression of J/ψ without the quark gluon plasma formation.

متن کامل

ar X iv : h ep - p h / 01 10 19 1 v 1 1 5 O ct 2 00 1 Light - Quark Vector - Meson Spectroscopy

The current situation for vector meson spectroscopy is outlined, and it is shown that the data are inconsistent with the generally accepted model for meson decay. A possible resolution in terms of exotic mesons is given. Although this resolves some of the issues, fresh theoretical questions are raised.

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 2001