High-energy elementary amplitudes from quenched and full QCD
نویسندگان
چکیده
منابع مشابه
QCD Amplitudes in the High - Energy Limit
Dijet production with a rapidity gap between the jets is considered as a test ground for the production of a heavy Higgs boson via weak-boson fusion at hadron supercolliders. It is argued that in order to perform a detailed analysis of dijet production with a rapidity gap we need an O(αs) calculation including the relevant collinear enhancements which give structure to the jets. Such a calculat...
متن کاملScattering Amplitudes in High Energy QCD
We develop a new systematic procedure for the Regge limit in perturbative QCD to arbitrary logarithmic order. The formalism relies on the IR structure and the gauge symmetry of the theory. We identify leading regions in loop momentum space responsible for the singular structure of the amplitudes and perform power counting to determine the strength of these divergences. Using a factorization pro...
متن کاملHybrid mesons from quenched QCD
We use lattice methods to evaluate from first principles the spectrum of hybrid mesons produced by gluonic excitations in quenched QCD with quark masses near the strange quark mass. For the spin-exotic mesons with J = 1, 0, and 2 which are not present in the quark model, we determine the lightest state to be 1 with mass of 2.0(2) GeV. One of the goals of quantitative studies of QCD is to determ...
متن کاملUniversal behavior of QCD amplitudes at high energy from general tools of statistical physics
We show that high energy scattering is a statistical process essentially similar to reaction-diffusion in a system made of a finite number of particles. The BalitskyJIMWLK equations correspond to the time evolution law for the particle density. The squared strong coupling constant plays the role of the minimum particle density. Discreteness is related to the finite number of partons one may obs...
متن کاملCalculation of nonleptonic kaon decay amplitudes from K\p matrix elements in quenched domain-wall QCD
~CP-PACS Collaboration! Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan Center for Computational Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan Institute of Theoretical Physics, Kanaz...
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: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.07.021