%0 Generic %1 ZprimeLimitsCDF2011 %A Collaboration, CDF %D 2011 %K pairs production quark resonant search top %T A search for resonant production of $tt$ pairs in $4.8\ fb^-1$ of integrated luminosity of $pp$ collisions at $s=1.96\ TeV$ %U http://arxiv.org/abs/1107.5063 %X We search for resonant production of tt pairs in 4.8 fb^-1 integrated luminosity of ppbar collision data at sqrts=1.96 TeV in the lepton+jets decay channel, where one top quark decays leptonically and the other hadronically. A matrix element reconstruction technique is used; for each event a probability density function (pdf) of the ttbar candidate invariant mass is sampled. These pdfs are used to construct a likelihood function, whereby the cross section for resonant ttbar production is estimated, given a hypothetical resonance mass and width. The data indicate no evidence of resonant production of ttbar pairs. A benchmark model of leptophobic Z ttbar is excluded with m_Z' < 900 GeV at 95% confidence level.

@misc{ZprimeLimitsCDF2011, abstract = {We search for resonant production of tt pairs in 4.8 fb^{-1} integrated luminosity of ppbar collision data at sqrt{s}=1.96 TeV in the lepton+jets decay channel, where one top quark decays leptonically and the other hadronically. A matrix element reconstruction technique is used; for each event a probability density function (pdf) of the ttbar candidate invariant mass is sampled. These pdfs are used to construct a likelihood function, whereby the cross section for resonant ttbar production is estimated, given a hypothetical resonance mass and width. The data indicate no evidence of resonant production of ttbar pairs. A benchmark model of leptophobic Z \rightarrow ttbar is excluded with m_{Z'} < 900 GeV at 95% confidence level.}, added-at = {2012-10-15T14:37:05.000+0200}, author = {Collaboration, CDF}, biburl = {https://www.bibsonomy.org/bibtex/2d7d4c3bbb57a20470c245418125954dd/kreczko}, description = {A search for resonant production of $t\bar{t}$ pairs in $4.8\ \rm{fb}^{-1}$ of integrated luminosity of $p\bar{p}$ collisions at $\sqrt{s}=1.96\ \rm{TeV}$}, interhash = {84a783dd7b80178572d2941266681bba}, intrahash = {d7d4c3bbb57a20470c245418125954dd}, keywords = {pairs production quark resonant search top}, note = {cite arxiv:1107.5063Comment: accepted for publication in Physical Review D Sep 21, 2011}, timestamp = {2014-07-27T00:02:59.000+0200}, title = {A search for resonant production of $t\bar{t}$ pairs in $4.8\ \rm{fb}^{-1}$ of integrated luminosity of $p\bar{p}$ collisions at $\sqrt{s}=1.96\ \rm{TeV}$}, url = {http://arxiv.org/abs/1107.5063}, year = 2011 }