22-26 October 2018
Hotel Intourist Kolomenskoye 4*
Europe/Moscow timezone

Resummed non-global logs in QCD observables from the BMS equation

Not scheduled
Alekseevskiy hall (Hotel Intourist Kolomenskoye 4*)

Alekseevskiy hall

Hotel Intourist Kolomenskoye 4*

Kashyrskoye shosse, 39B, Moscow, Russia, 115409
Plenary/section talk Particle physics: hep theory Particle Physics: HEP theory

Speaker

Prof. Yazid Delenda (University of Batna 1)

Description

Non-global logs are very common in observables that are used in precision measurements at particle collider experiments. Perturbative convergence is spoled by the presence of these calculations necessitating a difficult all-orders resummation. The integro-differential Banfi-Marchesini-Smye equation, valid in the Large-Nc aproximation and usually solved numerically, provides us with means to account for these logs to all orders at leading-log accuracy.
In this talk I present an analytic solution of the BMS equation as a perturbative series in the exponent. This allows us to perform an accurate partial resummation of the large non-global logs in several QCD observables in e+e- annihilation processes as well as hadronic collisions. I also discuss the possible extension of this work to the solution of the Weigert equation which includes finite-Nc corrections and gives more accurate description of the non-global logarithms.

Primary author

Prof. Yazid Delenda (University of Batna 1)

Co-authors

Dr. Kamel Khelifa-Kerfa (Islamic University of Medina)

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