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

作者：Jung Dong Won; Ko P; Lee Jae Sik^*; Nam Soo hyeon

来源：Physics Letters B, 2010, 691(5): 238-242.

DOI：10.1016/j.physletb.2010.06.040

• Top quark production
• Hadron collider
• New physics

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 q (q) over bar -> t (t) over bar 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 (t) over bar production cross section and AFB measured at the Tevatron, and discuss possible new physics scenarios that could generate such dim-6 operators.

• 出版日期2010-8-9
• 单位中央民族大学