Colour Dipole Phenomenology

2005 ◽  
Vol 146 ◽  
pp. 206-210
Author(s):  
J.R. Forshaw ◽  
G. Shaw
Keyword(s):  
Colour Dipole

scholarly journals The colour dipole approach to small-xprocesses

2000 ◽  
Vol 26 (5) ◽  
pp. 683-688 ◽  
Author(s):  
G R Kerley ◽  
M McDermott
Keyword(s):  
Colour Dipole

scholarly journals Further success of the colour dipole model

2006 ◽  
Vol 2006 (11) ◽  
pp. 025-025 ◽  
Author(s):  
Jeffrey R Forshaw ◽  
Ruben Sandapen ◽  
Graham Shaw
Keyword(s):  
Dipole Model ◽  
Colour Dipole Model ◽  
Colour Dipole

scholarly journals Non-abelian infrared divergences on the celestial sphere

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Lorenzo Magnea
Keyword(s):  
Field Theory ◽  
Simple Expression ◽  
Tree Level ◽  
Vertex Operators ◽  
Order Structure ◽  
Particle Scattering ◽  
Conformal Field ◽  
Celestial Sphere ◽  
Infrared Divergences ◽  
Colour Dipole

Abstract We consider the infrared factorisation of non-abelian multi-particle scattering amplitudes, and we study the form of the universal colour operator responsible for infrared divergences, when expressed in terms of coordinates on the ‘celestial sphere’ intersecting the future light-cone at asymptotic distances. We find that colour-dipole contributions to the infrared operator, to all orders in perturbation theory, have a remarkably simple expression in these coordinates, with scale and coupling dependence factorised from kinematics and colour. Generalising earlier suggestions in the abelian theory, we then show that the infrared operator can be computed as a correlator of vertex operators in a conformal field theory of Lie-algebra-valued free bosons on the celestial sphere. We verify by means of the OPE that the theory correctly predicts the all-order structure of collinear limits, and the tree-level factorisation of soft real radiation.

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