Zobrazeno 1 - 10
of 183
pro vyhledávání: '"White, C D"'
Autor:
Bahjat-Abbas, N., Bonocore, D., Damsté, J. Sinninghe, Laenen, E., Magnea, L., Vernazza, L., White, C. D.
Perturbative cross-sections in QCD are beset by logarithms of kinematic invariants, whose arguments vanish when heavy particles are produced near threshold. Contributions of this type often need to be summed to all orders in the coupling, in order to
Externí odkaz:
http://arxiv.org/abs/1905.13710
We consider the production of an arbitrary number of colour-singlet particles near partonic threshold, and show that next-to-leading order cross sections for this class of processes have a simple universal form at next-to-leading power (NLP) in the e
Externí odkaz:
http://arxiv.org/abs/1706.04018
Autor:
Luna, A., Monteiro, R., Nicholson, I., Ochirov, A., O'Connell, D., Westerberg, N., White, C. D.
Publikováno v:
JHEP 1704 (2017) 069
The double copy relates scattering amplitudes in gauge and gravity theories. In this paper, we expand the scope of the double copy to construct spacetime metrics through a systematic perturbative expansion. The perturbative procedure is based on dire
Externí odkaz:
http://arxiv.org/abs/1611.07508
We examine the Regge (high energy) limit of 4-point scattering in both QCD and gravity, using recently developed techniques to systematically compute all corrections up to next-to-leading power in the exchanged momentum i.e. beyond the eikonal approx
Externí odkaz:
http://arxiv.org/abs/1611.02172
Soft and collinear radiation is responsible for large corrections to many hadronic cross sections, near thresholds for the production of heavy final states. There is much interest in extending our understanding of this radiation to next-to-leading po
Externí odkaz:
http://arxiv.org/abs/1610.06842
Autor:
White, C. D.
Webs are sets of Feynman diagrams that contribute to the exponents of scattering amplitudes, in the kinematic limit in which emitted radiation is soft. As such, they have a number of phenomenological and formal applications, and offer tantalising gli
Externí odkaz:
http://arxiv.org/abs/1507.02167
The double copy is a much-studied relationship between gauge theory and gravity amplitudes. Recently, this was generalised to an infinite family of classical solutions to Einstein's equations, namely stationary Kerr-Schild geometries. In this paper,
Externí odkaz:
http://arxiv.org/abs/1507.01869
Threshold logarithms become dominant in partonic cross sections when the selected final state forces gluon radiation to be soft or collinear. Such radiation factorizes at the level of scattering amplitudes, and this leads to the resummation of thresh
Externí odkaz:
http://arxiv.org/abs/1503.05156
Autor:
White, C. D.
We confirm recently proposed theorems for the structure of next-to-soft corrections in gauge and gravity theories using diagrammatic techniques, first developed for use in QCD phenomenology. Our aim is to provide a useful alternative insight into the
Externí odkaz:
http://arxiv.org/abs/1406.7184
Publikováno v:
Phys. Rev. D 89, 025009 (2014)
We examine the high energy (Regge) limit of gravitational scattering using a Wilson line approach previously used in the context of non-Abelian gauge theories. Our aim is to clarify the nature of the Reggeization of the graviton and the interplay bet
Externí odkaz:
http://arxiv.org/abs/1306.6019