from September 29, 2015 to October 2, 2015
DESY Hamburg
Europe/Berlin timezone
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Contribution

DESY Hamburg - Seminar room 4a

Resummation of double-differential cross sections

Speakers

  • Lisa ZEUNE

Primary authors

Abstract content

LHC measurements involve cuts on several observables. Some lead to widely separated energy scales and require resummation. I will present an extension of SCET which enables the resummation of a class of double-differential measurements. Two prototypical application are 1) pp → Z + 0 jets, where the jet veto is imposed through the beam thrust event shape T, and the transverse momentum pT of the Z boson is measured and 2) the measurement of two angularities on a single jet. For the second application, the resummation on the two phase space boundaries was achieved recently (Larkoski, Moult, Neill, 2014). I will show how to go beyond this by identifying the factorization formula needed to achieve resummation in the intermediate regime, which involve additional collinear-soft modes. Numerical results for the resummed double-differential cross section will be presented.