6533b7d6fe1ef96bd126706c
RESEARCH PRODUCT
Constraints on four-fermion interactions from the tt¯ charge asymmetry at hadron colliders
Marcel VosM. Perelló Rosellósubject
PhysicsTop quarkParticle physicsLarge Hadron ColliderPhysics and Astronomy (miscellaneous)010308 nuclear & particles physicsmedia_common.quotation_subjectPhysics beyond the Standard ModelHigh Energy Physics::LatticeHadronHigh Energy Physics::PhenomenologyTevatronCharge (physics)01 natural sciencesAsymmetryFour-fermion interactionsNuclear physics0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsEngineering (miscellaneous)media_commondescription
The charge asymmetry in top quark production at hadron colliders is sensitive to beyond-the-Standard-Model four-fermion interactions. In this study we compare the sensitivity of $$t\bar{t}$$ cross-section and charge asymmetry measurements to effective operators describing four-fermion interactions and study the limits on the validity of this approach. A fit to a combination of Tevatron and LHC measurements yields stringent limits on the linear combinations $$C_1$$ and $$C_2$$ of the four-fermion effective operators.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-04-13 | European Physical Journal C |