Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-07-29
Phys.Rev.Lett.102:152001,2009
Physics
High Energy Physics
High Energy Physics - Experiment
Revised version as published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.102.152001
We report a measurement of the top quark mass $M_t$ in the dilepton decay channel $t\bar{t}\to b\ell'^{+}\nu'_\ell\bar{b}\ell^{-}\bar{\nu}_{\ell}$. Events are selected with a neural network which has been directly optimized for statistical precision in top quark mass using neuroevolution, a technique modeled on biological evolution. The top quark mass is extracted from per-event probability densities that are formed by the convolution of leading order matrix elements and detector resolution functions. The joint probability is the product of the probability densities from 344 candidate events in 2.0 fb$^{-1}$ of $p\bar{p}$ collisions collected with the CDF II detector, yielding a measurement of $M_t= 171.2\pm 2.7(\textrm{stat.})\pm 2.9(\textrm{syst.})\mathrm{GeV}/c^2$.
Aaltonen Timo
CDF Collaboration
No associations
LandOfFree
Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF 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 Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-38756