University of Cambridge > > HEP phenomenology joint Cavendish-DAMTP seminar > Double Parton Distributions incorporating pQCD Evolution and Sum Rule Constraints

Double Parton Distributions incorporating pQCD Evolution and Sum Rule Constraints

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  • UserJonathan Gaunt (Cambridge)
  • ClockThursday 27 May 2010, 16:00-17:00
  • HouseMR13, CMS.

If you have a question about this talk, please contact Steve Chun Hay Kom.

Double parton scattering (DPS) – the process in which two distinct pairs of partons hard scatter in an individual proton-proton collision – represents an important background to certain Higgs and new physics signals, and reveals information about the internal structure of the proton. One of the key objects required to make theoretical predictions of DPS cross sections is the set of double parton distribution functions (dPDFs) – the two parton analogue of the well-established set of single PDFs. Traditionally the dPDFs have been crudely approximated using products of single PDFs, neglecting all possible correlations in longitudinal momentum. I discuss a novel set of dPDFs – the GS09 dPDFs – which takes proper account of pQCD evolution effects, and also obeys the constraints imposed on the dPDFs by quark number and momentum conservation considerations.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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