Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Grunberg, G"'
Autor:
Grunberg, G., Ravindran, V.
Publikováno v:
JHEP 0910:055,2009
We check against exact finite order three-loop results for the non-singlet F_2 and F_3 structure functions the validity of a class of momentum space ansaetze for threshold resummation at the next-to-leading order in 1-x, which generalize results prev
Externí odkaz:
http://arxiv.org/abs/0902.2702
Autor:
Friot, S., Grunberg, G.
Publikováno v:
JHEP 0709:002,2007
We verify to order alpha_s^4 two previously conjectured relations, valid in four dimensions, between constant terms in threshold resummation (for Deep Inelastic Scattering and the Drell-Yan process) and the second logarithmic derivative of the massle
Externí odkaz:
http://arxiv.org/abs/0706.1206
Autor:
Grunberg, G.
Publikováno v:
JHEP 9811:006,1998
Power corrections in QCD (both conventional and unconventional ones arising from the ultraviolet region) are discussed within the infrared finite coupling-dispersive approach. It is shown how power corrections in Minkowskian quantities can be derived
Externí odkaz:
http://arxiv.org/abs/hep-ph/9807494
Autor:
Grunberg, G.
It is argued that power contributions of short distance origin naturally arise in the infrared finite coupling approach. A phenomenology of $1/Q^2$ power corrections is sketched.
Comment: 5 pages, latex, no figures. Expanded version of a talk pr
Comment: 5 pages, latex, no figures. Expanded version of a talk pr
Externí odkaz:
http://arxiv.org/abs/hep-ph/9711481
Autor:
Grunberg, G.
Standard power-behaved contributions in QCD arising from non-perturbative effects at low scale can be described, as shown by Dokshitzer, Marchesini and Webber, with the notion of an infrared regular effective coupling. In their approach, a non-pertur
Externí odkaz:
http://arxiv.org/abs/hep-ph/9705460
Autor:
Grunberg, G.
In the dispersive approach of Dokshitzer, Marchesini and Webber, standard power-behaved contributions of infrared origin are described with the notion of an infrared regular QCD coupling. I argue that their framework suggests the existence of non-sta
Externí odkaz:
http://arxiv.org/abs/hep-ph/9705290
Autor:
Grunberg, G.
The connection between renormalons and power corrections is discussed in the case the effective coupling constant has an infrared fixed point of perturbative origin.
Comment: Latex,6 pages,no figures.Talk presented at the 'Int. Workshop on Deep
Comment: Latex,6 pages,no figures.Talk presented at the 'Int. Workshop on Deep
Externí odkaz:
http://arxiv.org/abs/hep-ph/9608375
Autor:
Grunberg, G.
Publikováno v:
Phys.Lett. B388 (1996) 173-178
The observed small value of the first moment of the polarized nucleon spin structure function $g_1$ may be interpreted, in the Veneziano--Shore approach, as a suppression of the first moment $\chi^\prime(0)$ of the QCD topological susceptibility. I g
Externí odkaz:
http://arxiv.org/abs/hep-ph/9607204
Autor:
Grunberg, G.
Publikováno v:
Phys.Lett.B372:121-126,1996
The connection between renormalons and power corrections is investigated for the typical infrared renormalon integral assuming the effective coupling constant has an infrared fixed point of an entirely perturbative origin. It is shown that even then
Externí odkaz:
http://arxiv.org/abs/hep-ph/9512203
