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Jonathan Gaunt (Cambridge)
Thursday 27 May 2010, 16:00-17:00
Double Parton Distributions incorporating pQCD Evolution and Sum Rule Constraints
- đ¤ Speaker: Jonathan Gaunt (Cambridge)
- đ Date & Time: Thursday 27 May 2010, 16:00 - 17:00
- đ Venue: MR13, CMS
Abstract
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.
Series This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.
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