Journal of High Energy Physics

, 2012:51 | Cite as

\( {\sqrt {{\widehat{s}}}_{\min }} \) resurrected

  • Tania Robens


We discuss the use of the variable \( {\sqrt {{\widehat{s}}}_{\min }} \), which has been proposed in order to measure the hard scale of a multi parton final state event using inclusive quantities only, on a SUSY data sample for a 14 TeV LHC. In its original version, where this variable was proposed on calorimeter level, the direct correlation to the hard scattering scale does not survive when effects from soft physics are taken into account. We here show that when using reconstructed objects instead of calorimeter energy and momenta as input, we manage to actually recover this correlation for the parameter point considered here. We furthermore discuss the effect of including W + jets and \( \overline t t \) + jets background in our analysis and the use of \( {\sqrt {{\widehat{s}}}_{\min }} \)for the suppression of SM induced background in new physics searches.


Supersymmetry Phenomenology 


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Copyright information

© SISSA, Trieste, Italy 2012

Authors and Affiliations

  1. 1.SUPA, School of Physics and AstronomyUniversity of GlasgowGlasgowU.K.
  2. 2.Institut für Kern- und Teilchenphysik (IKTP)Technische Universität DresdenDresdenGermany

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