Large-N c quantum chromodynamics and harmonic sums
نویسندگان
چکیده
منابع مشابه
Tetraquark mesons in large-N quantum chromodynamics.
It is argued that exotic mesons consisting of two quarks and two antiquarks are not ruled out in quantum chromodynamics with a large number N of colors, as generally thought. Tetraquarks of one class are typically long-lived, with decay rates proportional to 1/N.
متن کاملQuantum Chromodynamics
After a brief historical review of the emergence of QCD as the quantum field theory of strong interactions, the basic notions of colour and gauge invariance are introduced leading to the QCD Lagrangian. The second lecture is devoted to perturbative QCD, from tree-level processes to higher-order corrections in renormalized perturbation theory, including jet production in e + e − annihilation , h...
متن کاملQuantum Chromodynamics *
The classical Lagrangian of chromodynamics, its quantization in the perturbation theory framework, and renormalization form the subject of these lectures. Symmetries of the theory are discussed. The dependence of the coupling constant αs on the renormalization scale μ is considered in detail.
متن کاملQuarkonia and quantum chromodynamics
The P and Y spectroscopies are analyzed in the framework of a recently proposed potential model which incorporates linear confinement and asymptotic freedom. Given the Regge slope a ' (a ' taken to be 1 GeV ') and the quantum-chromodynamics (QCD) scale parameter A (AM, taken to be 0.5 GeV, where MS refers to the modified minimal-subtraction scheme) the potential is completely determined. Excell...
متن کاملQuantum ChromoDynamics
These lectures on QCD stress the theoretical elements that underlie a wide range of phenomenological studies, particularly gauge invariance, renormalization, factorization and infrared safety. The three parts cover the basics of QCD, QCD at tree level and higher order corrections. Lectures given at the 2004 European School of High-Energy Physics, St. Feliu de Guı́xols, Barcelona, Spain, 30 May –...
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: Pramana
سال: 2012
ISSN: 0304-4289,0973-7111
DOI: 10.1007/s12043-012-0319-0