Hadron Spectrum and the Infrared Behavior of QCD Coupling
نویسندگان
چکیده
منابع مشابه
Extracting infrared QCD coupling from meson spectrum
In the framework of the Bethe-Salpeter formalism used in previous papers to evaluate the quarkonium spectrum, here we reverse the point of view to extract an “experimental” running coupling α s (Q2) in the infrared (IR) region from the data. The values so obtained agree within the erros with the Shirkov-Solovtsov analytic coupling for 200 MeV < Q < 1.2 GeV, thus giving a very satisfactory unify...
متن کاملOn the QCD coupling behavior in the infrared region
The summary of nonperturbative results for the QCD invariant coupling ¯ α s obtained by lattice simulations for functional integral and by solution of approximate Dyson–Schwinger equations reveals a puzzling variety of IR behavior of ¯ α s (Q 2) even on a qualitative level. This, in turn, rises a question of correspondence between the results obtained so far by different groups. We analyze this...
متن کاملHadron Spectrum from Lattice QCD
A brief review is given of the lattice QCD calculation of the hadron spectrum. The status of current attempts toward inclusion of dynamical up, down and strange quarks is summarized focusing on our own work. Recent work on the possible existence of pentaquark states are assessed. We touch upon the PACS-CS Project for building our next machine for lattice QCD, and conclude with a near-term physi...
متن کاملThe Hadron Spectrum from Lattice Qcd *
Determining the hadron spectrum and hadron properties beyond the ground states is a challenge in lattice QCD. Most of these results have been in the quenched approximation but now we are entering the dynamical era. I review some of the ideas and methods of the lattice approach, concentrating on a few examples and on results obtained for Chirally Improved (CI) fermions.
متن کاملMonopoles and hadron spectrum in quenched QCD
We study quenched hadron spectra with Wilson fermion in abelian gauge fields extracted by maximal abelian projection and in fields induced by monopoles on 163×32 and 123×24 lattices. Pion mass squared and quark mass defined through the axial Ward identity satisfy the PCAC relation. Gross features of the light hadron spectra are almost similar to those in SU(3) gauge fields if normalization is m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2011
ISSN: 1742-6596
DOI: 10.1088/1742-6596/295/1/012041