Soft-gluon effects inWWproduction at hadron colliders | Zendy

Massimiliano Grazzini | Zendy

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Soft-gluon effects inWWproduction at hadron colliders

Author(s) -

Massimiliano Grazzini

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/01/095

Subject(s) - resummation , physics , particle physics , gluon , large hadron collider , quantum chromodynamics , hadron , event generator , logarithm , nuclear physics , event (particle physics) , pair production , mathematical analysis , mathematics , quantum mechanics

We consider QCD radiative corrections to WW pair production in hadroncollisions. We perform a calculation that consistently combines next-to-leadingorder predictions with soft-gluon resummation valid at small transverse momentaptWW of the WW pair. We present results for the ptWW distribution at the LHC upto (almost) next-to-next-to-leading logarithmic accuracy, and study the effectof resummation on the charged-lepton distributions. Soft-gluon effects aretypically mild, but they can be strongly enhanced when hard cuts are applied.The relevant distributions are generally well described by the MC@NLO eventgenerator.Comment: 15 pages, 12 postscript figures. Error corrected in NLO plot for WW transverse-mass distribution. Results unchange

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