Precision QEDXQCD Resummation Theory for LHC Physics: Status and Update

Details Precision QEDXQCD Resummation Theory for LHC Physics: Status and Update Precision QEDXQCD Resummation Theory for LHC Physics: Status and Update

2008-08-22

arxiv.org/abs/0808.3133v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures, presented by B.F.L. Ward at 2008 HERA-LHC Workshop

Scientific paper

We present the elements of the IR-improved DGLAP-CS theory as it relates to the new MC friendly exponentiated scheme for precision calculation of higher order corrections to LHC physics in which IR singularities from both QED and QCD are canceled to all orders in alpha and in alpha_s simultaneously in the presence of rigorous shower/ME matching. We present the first MC data comparing the implied new showers themselves with the standard ones using the HERWIG6.5 MC event generator as a test case at LHC energies. As expected, the IR-improved shower re-populates lower values of the energy fraction z and lower values of the attendant p_T for the standard HERWIG6.5 input parameters. Possible phenomenological implications are discussed.

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