Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum

Details Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum

2012-02-29

arxiv.org/abs/1202.6622v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Matches the Physical Review D accepted version. Includes the recent CMS results on the LHC ttbar induced asymmetry in which th

Scientific paper

We study how the significance of top quark induced charge asymmetries at the LHC may be enhanced exploiting the $t\bar t$ total transverse momentum to enrich the fraction of quark fusion events in the sample. We combine this variable with previous variables related to the boost and the invariant mass of the $t\bar t$ pair to find an optimum cut which maximizes the significance of the asymmetry when systematic and statistic errors are taken into account. We find that including the $t\bar t$ transverse momentum in the analysis of the expected 2012 LHC data provides a considerable enhancement in the significance of the asymmetry.

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