Collider-Independenttt¯Forward-Backward Asymmetries

Collider-independent tt forward-backward asymmetries.

We introduce the forward-backward asymmetries A(u), A(d) corresponding to uū, dd → tt production, respectively, at hadron colliders. These are collider and center-of-mass independent observables, directly related to the forward-backward and charge asymmetries measured at the Tevatron and the LHC, respectively. We discuss how to extract these asymmetries from data. Because these asymmetries are ...

Forward - Backward Asymmetries in Hadronically Produced Lepton

It has now become possible to observe appreciable numbers of hadronically produced lepton pairs in mass ranges where the contributions of the photon and Z are comparable. Consequently, in the reaction pp̄ → ll+. . ., substantial forward-backward asymmetries can be seen. These asymmetries provide a test of the electroweak theory in a new regime of energies, and can serve as diagnostics for any ne...

Lepton Polarization and Forward - Backward Asymmetries in b → sτ + τ −

We study the spin polarizations of both τ leptons in the decay b → sττ. In addition to the polarization asymmetries involving a single τ , we construct asymmetries for the case where both polarizations are simultaneously measured. We also study forward-backward asymmetries with polarized τ ’s. We find that a large number of asymmetries are predicted to be large, >∼ 10%. This permits the measure...

Forward and Backward Uncertainty Quantification in Optimization

This contribution gathers some of the ingredients presented during the Iranian Operational Research community gathering in Babolsar in 2019.It is a collection of several previous publications on how to set up an uncertainty quantification (UQ) cascade with ingredients of growing computational complexity for both forward and reverse uncertainty propagation.

Complete bremsstrahlung corrections to the forward - backward asymmetries in b → X s l + l −