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arXiv · 1209.6549

Collinearity approximations and kinematic shifts in partonic shower algorithms

F. Hautmann·H. Jung
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Abstract

We study kinematic effects due to the approximation of on-shell, collinear partons in shower Monte Carlo event generators. We observe that the collinearity approximation, combined with the requirements of energy-momentum conservation, gives rise to a kinematic shift, event by event, in longitudinal momentum distributions. We present numerical results in the case of jet and heavy flavor production processes measured at the LHC.

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F. Hautmann, H. Jung. 2012-09-28. Collinearity approximations and kinematic shifts in partonic shower algorithms. https://doi.org/10.1140/epjc%2Fs10052-012-2254-0

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