On the resummation of non-global logarithms at finite $N_c$

30 Apr 2015, 11:10
25m
FORUM ()

FORUM

WG4 QCD and Hadronic Final States WG4 QCD and Hadronic Final States

Speaker

Dr Yazid Delenda (Université Hadj Lakhdar - Batna)

Description

We calculate non-global logarithms at finite $N_c$ for the hemisphere mass distribution in $e^+e^-\to q \bar{q}$ at single logarithmic accuracy up to fifth order in the coupling constant. Our results indicate the possibility of resummation of these logarithms to all orders into an exponential form. We compare our findings to those reported in the literature at large $N_c$ and find agreement. We also compare our results with numerical all-orders resummation at lagre $N_c$ and discuss the importance of finite $N_c$ corrections on the said distribution.

Primary author

Dr Yazid Delenda (Université Hadj Lakhdar - Batna)

Co-author

Kamel Khelifa-Kerfa (Université Hassiba Benbouali de Chlef)

Presentation Materials