%0 Generic %1 CDF-TopAsymmetry-MassDependence %A Collaboration, The CDF %A Aaltonen, T. %D 2010 %K asymmetry cdf dependence mass quark top %R 10.1103/PhysRevD.83.112003 %T Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production %U http://arxiv.org/abs/1101.0034 %X We present a new measurement of the inclusive forward-backward t-tbar production asymmetry and its rapidity and mass dependence. The measurements are performed with 5.3 fb^-1 of p-pbar collisions at s = 1.96 TeV, recorded with CDF II at the Fermilab Tevatron. Significant inclusive asymmetries are observed in the laboratory and t-tbar rest frame, and are consistent with CP conservation under interchange of t and tbar. In the t-tbar rest frame, the asymmetry increases with the t-tbar rapidity difference, \Delta(y), and with the invariant mass M_t-tbar of the t-tbar system. Parton-level asymmetries are derived in two regions of each variable, and the asymmetry is found to be most significant at large \Delta(y) and M_t-tbar. For M_t-tbar > 450 GeV/c^2, the parton-level asymmetry in the t-tbar rest frame is A^t-tbar = 0.4750.114 compared to a next-to-leading order QCD prediction of 0.0880.013.

@misc{CDF-TopAsymmetry-MassDependence, abstract = {We present a new measurement of the inclusive forward-backward t-tbar production asymmetry and its rapidity and mass dependence. The measurements are performed with 5.3 fb^{-1} of p-pbar collisions at \sqrt{s} = 1.96 TeV, recorded with CDF II at the Fermilab Tevatron. Significant inclusive asymmetries are observed in the laboratory and t-tbar rest frame, and are consistent with CP conservation under interchange of t and tbar. In the t-tbar rest frame, the asymmetry increases with the t-tbar rapidity difference, \Delta(y), and with the invariant mass M_{t-tbar} of the t-tbar system. Parton-level asymmetries are derived in two regions of each variable, and the asymmetry is found to be most significant at large \Delta(y) and M_{t-tbar}. For M_{t-tbar} > 450 GeV/c^2, the parton-level asymmetry in the t-tbar rest frame is A^{t-tbar} = 0.475\pm 0.114 compared to a next-to-leading order QCD prediction of 0.088\pm 0.013.}, added-at = {2012-10-23T18:12:00.000+0200}, author = {Collaboration, The CDF and Aaltonen, T.}, biburl = {https://www.bibsonomy.org/bibtex/20f88a2b8b2b1d70a497dc9fc6922aebe/kreczko}, description = {Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production}, doi = {10.1103/PhysRevD.83.112003}, interhash = {f03cb8a187996431b81f0bbdb69cfb63}, intrahash = {0f88a2b8b2b1d70a497dc9fc6922aebe}, keywords = {asymmetry cdf dependence mass quark top}, note = {arxiv:1101.0034}, timestamp = {2014-07-27T00:02:59.000+0200}, title = {Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production}, url = {http://arxiv.org/abs/1101.0034}, year = 2010 }