Browsing by Author "Waalewijn, Wouter Jonathan"
Now showing items 1-6 of 6
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Beam Thrust Cross Section for Drell-Yan Production at Next-to-Next-to-Leading-Logarithmic Order
Tackmann, Frank; Waalewijn, Wouter Jonathan; Stewart, Iain W (American Physical Society, 2011-01)At the LHC and Tevatron strong initial-state radiation (ISR) plays an important role. It can significantly affect the partonic luminosity available to the hard interaction or contaminate a signal with additional jets and ... -
Chiral anomaly in soft collinear effective theory
Waalewijn, Wouter Jonathan (American Physical Society, 2009-02)Anomalies have infrared and ultraviolet ingredients, and are often realized in effective theories in a nontrivial way. We study the chiral anomaly in soft collinear effective theory (SCET), where the anomaly equation has ... -
Factorization at the LHC: From parton distribution functions to initial state jets
Tackmann, Frank; Waalewijn, Wouter Jonathan; Stewart, Iain W (American Physical Society, 2010-05)We study proton-(anti)proton collisions at the LHC or Tevatron in the presence of experimental restrictions on the hadronic final state and for generic parton momentum fractions. At the scale Q of the hard interaction, ... -
Generalized fragmentation functions for fractal jet observables
Elder, Benjamin Tyler; Procura, Massimiliano; Thaler, Jesse; Waalewijn, Wouter Jonathan; Zhou, Kevin (Springer Berlin Heidelberg, 2017-06)We introduce a broad class of fractal jet observables that recursively probe the collective properties of hadrons produced in jet fragmentation. To describe these collinear-unsafe observables, we generalize the formalism ... -
N Jettiness: An Inclusive Event Shape to Veto Jets
Tackmann, Frank; Waalewijn, Wouter Jonathan; Stewart, Iain W (American Physical Society, 2010-08)Jet vetoes are essential in many analyses at the LHC and Tevatron. Typical signals have a specific number of hard jets or leptons, while backgrounds have additional jets. Vetoing undesired jets efficiently discriminates ... -
The quark beam function at NNLL
Tackmann, Frank; Waalewijn, Wouter Jonathan; Stewart, Iain W (Springer / SISSA, 2010-09)In hard collisions at a hadron collider the most appropriate description of the initial state depends on what is measured in the final state. Parton distribution functions (PDFs) evolved to the hard collision scale Q are ...