Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations

Dec, 2012
17 pages
Published in:
  • JHEP 03 (2013) 015
e-Print:
Report number:
  • NIKHEF-2012-021,
  • CERN-PH-TH-2012-329

Citations per year

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Abstract: (Springer)
We present a general method that allows one to decay narrow resonances in Les Houches Monte Carlo events in an efficient and accurate way. The procedure preserves both spin correlation and finite width effects to a very good accuracy, and is therefore particularly suited for the decay of resonances in production events generated at next-to-leading-order accuracy. The method is implemented as a generic tool in the Mad-Graph5 framework, giving access to a very large set of possible applications. We illustrate the validity of the method and the code by applying it to the case of single top and top quark pair production, and show its capabilities on the case of top quark pair production in association with a Higgs boson.
Note:
  • 17 pages, 6 figures, published version
  • Monte Carlo
  • MadGraph
  • spin correlations
  • top: pair production
  • narrow resonance: decay
  • numerical calculations: Monte Carlo
  • spin: correlation
  • resonance: heavy
  • higher-order: 1
  • width: finite