22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron

23 Jul 2010, 16:35
15m
Salle Maillot ()

Salle Maillot

Parallel Session Talk 10 - Beyond the Standard Model (theory and experimental searches) 10 - Beyond the Standard Model (theory and experimental searches)

Speaker

Prof. Pyungwon Ko (KIAS)

Description

Motivated by a possible anomaly in the forward-backward (FB) asymmetry of top quark (A_FB) observed at the Tevatron, we perform a model independent analysis on qqbar -> ttbar using an effective lagrangian with dim-6 four-quark operators. We derive necessary conditions on new physics structures and the couplings that are consistent with the $t\bar{t}$ production cross section and A_FB measured at the Tevatron, and discuss possible new physics scenarios that could generate such dim-6 operators.

Primary author

Prof. Pyungwon Ko (KIAS)

Co-authors

Dr Dong-Won Jung (Physics Department and CMTP, National Central University, Jhongli, Taiwan, 32054) Dr Jaesik Lee (Physics Division, National Center for Theoretical Sciences, Hsinchu, Taiwan 300) Dr Soo-hyeon Nam (Korea Institute of Science and Technology Information, Daejeon 305-806, Korea)

Presentation Materials