%0 Generic %1 degrande2010nonresonant %A Degrande, Céline %A Gérard, Jean-Marc %A Grojean, Christophe %A Maltoni, Fabio %A Servant, Géraldine %D 2010 %K bsm eft theory ttbar %R 10.1007/JHEP03(2011)125 %T Non-resonant New Physics in Top Pair Production at Hadron Colliders %U http://arxiv.org/abs/1010.6304 %X We use top quark pair production as a probe of top-philic non-resonant new physics. Following a low energy effective field theory approach, we calculate several key observables in top quark pair production at hadron colliders (e.g., total cross section, ttbar invariant mass distribution, forward-backward asymmetry, spin correlations) including the interference of the Standard Model with dimension-six operators. We determine the LHC reach in probing new physics after having taken into account the Tevatron constraints. In particular, we show that the gluon fusion process gg -> ttbar which remains largely unconstrained at the Tevatron is affected by only one top-philic dimension-six operator, the chromo-magnetic moment of the top quark. This operator can be further constrained by the LHC data as soon as a precision of about 20% is reached for the total ttbar cross-section. While our approach is general and model-independent, it is particularly relevant to models of Higgs and top compositeness, which we consider in detail, also in connection with ttbar ttbar and ttbar bbbar production.

@misc{degrande2010nonresonant, abstract = {We use top quark pair production as a probe of top-philic non-resonant new physics. Following a low energy effective field theory approach, we calculate several key observables in top quark pair production at hadron colliders (e.g., total cross section, ttbar invariant mass distribution, forward-backward asymmetry, spin correlations) including the interference of the Standard Model with dimension-six operators. We determine the LHC reach in probing new physics after having taken into account the Tevatron constraints. In particular, we show that the gluon fusion process gg -> ttbar which remains largely unconstrained at the Tevatron is affected by only one top-philic dimension-six operator, the chromo-magnetic moment of the top quark. This operator can be further constrained by the LHC data as soon as a precision of about 20% is reached for the total ttbar cross-section. While our approach is general and model-independent, it is particularly relevant to models of Higgs and top compositeness, which we consider in detail, also in connection with ttbar ttbar and ttbar bbbar production.}, added-at = {2016-02-03T15:03:27.000+0100}, author = {Degrande, Céline and Gérard, Jean-Marc and Grojean, Christophe and Maltoni, Fabio and Servant, Géraldine}, biburl = {https://www.bibsonomy.org/bibtex/265a737c9a20c19e89e7abaf6631fecbe/omkind}, description = {Non-resonant New Physics in Top Pair Production at Hadron Colliders}, doi = {10.1007/JHEP03(2011)125}, interhash = {b9cdca023179bc974c196670e05292a0}, intrahash = {65a737c9a20c19e89e7abaf6631fecbe}, keywords = {bsm eft theory ttbar}, note = {cite arxiv:1010.6304Comment: 34 pages, 15 figures. v2: clarifications and references added, published version (JHEP)}, timestamp = {2016-02-03T15:03:27.000+0100}, title = {Non-resonant New Physics in Top Pair Production at Hadron Colliders}, url = {http://arxiv.org/abs/1010.6304}, year = 2010 }