Meson correlation function and screening mass in thermal QCD
نویسندگان
چکیده
منابع مشابه
Instantons and Meson Correlation Functions in QCD
Various QCD correlators are calculated in the instanton liquid model in zeromode approximation and 1/Nc expansion. Previous works are extended by including dynamical quark loops. In contrast to the original ”perturbative” 1/Nc expansion not all quark loops are suppressed. In the flavor singlet meson correlators a chain of quark bubbles survives the Nc →∞ limit causing a massive η′ in the pseudo...
متن کاملMeson B fragmentation function with consideration of mass corrections
Study of B meson (meson with the bottom quark flavor) in Large Hadron Collider (LHC) is of special importance so that the detector LHCb is devoted to investigate these types of mesons. For this reason, in this paper we will study the production process of this meson in a phenomenological approach using the experimental data from electron-positron annihilation. In this regards, we shall calculat...
متن کاملMeson correlation functions in a QCD plasma
The temporal pseudoscalar meson correlation function in a QCD plasma is investigated in a range of temperatures exceeding Tc and yet of experimental interest. Only the flavour-singlet channel is considered and the imaginary time formalism is employed for the finite temperature calculations. The behaviour of the meson spectral function and of the temporal correlator is first studied in the HTL a...
متن کاملHeavy-meson electromagnetic mass differences from QCD.
We compute the electromagnetic mass differences of mesons containing a single heavy quark in terms of measurable data using QCD-based arguments in heavy-quark effective theory. We derive an unsubtracted dispersion relation that shows that the mass differences are calculable in terms of the properties of the lowest-lying physical intermediate states. We then consider the problem in the largeN li...
متن کاملThe η′g∗g(∗) Vertex Function in Perturbative QCD and η′-Meson Mass Effects
The ηgg effective vertex function (EVF) is calculated in the QCD hard-scattering approach, taking into account the η′-meson mass. We work in the approximation in which only one non-leading Gegenbauer moment in both the quark-antiquark and gluonic light-cone distribution amplitude for the η′-meson is kept. The EVF with one off-shell gluon is shown to have the form Fη′g∗g(q 2 1 , 0,m 2 η ) = m η ...
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: Open Physics
سال: 2012
ISSN: 2391-5471
DOI: 10.2478/s11534-011-0117-1