Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders

Details Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders

2010-09-08

arxiv.org/abs/1009.1580v2

Eur.Phys.J.C71:1600,2011

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 5 figures, 2 tables

Scientific paper

10.1140/epjc/s10052-011-1600-y

In future measurements of the dilepton ($Z/\gamma^*$) transverse momentum, \Qt, at both the Tevatron and LHC, the achievable bin widths and the ultimate precision of the measurements will be limited by experimental resolution rather than by the available event statistics. In a recent paper the variable \at, which corresponds to the component of \Qt\ that is transverse to the dilepton thrust axis, has been studied in this regard. In the region, \Qt\ $<$ 30 GeV, \at\ has been shown to be less susceptible to experimental resolution and efficiency effects than the \Qt. Extending over all \Qt, we now demonstrate that dividing \at\ (or \Qt) by the measured dilepton invariant mass further improves the resolution. In addition, we propose a new variable, \phistarEta, that is determined exclusively from the measured lepton directions; this is even more precisely determined experimentally than the above variables and is similarly sensitive to the \Qt. The greater precision achievable using such variables will enable more stringent tests of QCD and tighter constraints on Monte Carlo event generator tunes.

Affiliated with

Also associated with

No associations

Rating

Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-33132