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Prepared for submission to JHEP Double Parton Scattering Singularity in One-Loop Integrals
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International Journal of Modern Physics: Conference Series c © The Authors Scale evolution of double parton correlations
"... We review the effect of scale evolution on a number of different correlations in double parton scattering (DPS). The strength of the correlations generally decreases with the scale but at a rate which greatly varies between different types. Through studies of the evolution, an understanding of which ..."
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We review the effect of scale evolution on a number of different correlations in double parton scattering (DPS). The strength of the correlations generally decreases with the scale but at a rate which greatly varies between different types. Through studies of the evolution, an understanding of which correlations can be of experimental relevance in different processes and kinematical regions is obtained.
Prepared for submission to JHEP Single Perturbative Splitting Diagrams in Double
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Cavendish-HEP-2012-03 Single and Double Perturbative Splitting Diagrams in Double Parton Scattering
"... DOI: to be assigned We discuss the role of two different types of diagram in the proton-proton double parton scattering (DPS) cross section – single and double perturbative splitting graphs. Using explicit calculations of simple graphs from these classes we show that the treatment of these graphs by ..."
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DOI: to be assigned We discuss the role of two different types of diagram in the proton-proton double parton scattering (DPS) cross section – single and double perturbative splitting graphs. Using explicit calculations of simple graphs from these classes we show that the treatment of these graphs by the ‘double PDF ’ framework for describing the DPS cross section, introduced a number of years ago by Snigirev and collaborators, is unsatisfactory. We suggest that a contribution from single perturbative splitting graphs should be included in the DPS cross section, albeit with a different geometrical prefactor to the contribution from ‘zero perturbative splitting ’ graphs. 1 ‘Double Perturbative Splitting ’ Diagrams in Double Par-ton Scattering We define double parton scattering (DPS) as the process in which two pairs of partons partici-pate in hard interactions in a single proton-proton (p-p) collision. DPS processes can constitute important backgrounds to Higgs and other interesting signals (see e.g. [1]), and can themselves be considered as interesting signal processes, since they reveal information about parton pair correlations in the proton. Making the assumption that the hard processes A and B may be factorised, the cross section for p-p DPS may be written as follows: σD(A,B) ∝ i,j,k,l
sNN=5.02 TeV with the ATLAS
, 2013
"... Measurement of the azimuthal anisotropy for charged particle production in Pb+Pb collisions at√ sNN=2.76 TeV and in p+Pb collisions at ..."
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Measurement of the azimuthal anisotropy for charged particle production in Pb+Pb collisions at√ sNN=2.76 TeV and in p+Pb collisions at
