منابع مشابه
Infrared Renormalons and Finite Volume *
We analyze the perturbative expansion of a condensate in the O(N) non-linear sigma model for large N on a two dimensional finite lattice. On an infinite volume this expansion is affected by an infrared renormalon. We extrapolate this analysis to the case of the gluon condensate of Yang-Mills theory and argue that infrared renormalons can be detected by performing perturbative studies even on re...
متن کاملInfrared Renormalons and Power Corrections in Deep-inelastic Sum Rules
Infrared renormalons and 1/Q2 power corrections in deep-inelastic sum rules are studied. The renormalization of operators with power divergence are discussed. The higher-twist terms in the operator product expansion are shown to account for the residual soft contributions survived from the Kinoshita-LeeNauenberg type of cancellation in Feynman diagrams. The presence of some degree of arbitrarin...
متن کاملBeta function and infrared renormalons in the exact
We discuss the relation between the Gell-Mann-Low beta function and the " flowing couplings " of the Wilsonian action S Λ [φ] of the exact renormalization group (RG) at the scale Λ. This relation involves the ultraviolet region of Λ so that the condition of renormalizability is equivalent to the Callan-Symanzik equation. As an illustration, by using the exact RG formulation, we compute the beta...
متن کاملInfrared Renormalons and Single Meson Production in Proton-proton Collisions
A. I. Ahmadov ∗, Coskun Aydin †, Sh. M. Nagiyev, Yilmaz A. Hakan ‡, and E. A. Dadashov 1 Department of Theoretical Physics, Baku State University, Z. Khalilov st. 23, AZ-1148, Baku, Azerbaijan Institute of Physics of Azerbaijan National Academy of Sciences, Baku, Azerbaijan 3 Department of Physics, Karadeniz Technical University, Trabzon, Turkey Abstract In this article, we investigate the cont...
متن کاملUniversality of infrared renormalons in hadronic cross sections
We discuss the role of infrared renormalons in power corrections to hadronic cross sections, including their universality. We show how perturbative renormalon structure arises near kinematic boundaries in the thrust distribution, the Drell-Yan cross section and radiative B decays. The leading infrared renormalon in each case is associated with jet evolution. Demanding that the combination of pe...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1997
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(97)00243-5