Large forward-backward asymmetry inB→Kμ+μ−from new physics tensor operators

Top quark forward-backward asymmetry from new t-channel physics

Sunghoon Jung, Hitoshi Murayama, Aaron Pierce, and James D. Wells Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor, Michigan 48109, USA Department of Physics, University of California, Berkeley, California 94720, USA Theoretical Physics Group, LBNL, Berkeley, California 94720, USA IPMU, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Japan 277-8568 CERN Theoretical ...

Forward - backward and isospin asymmetry for B →

The Forward–backward Asymmetry in Nnlo Qcd

We have recently calculated the second-order QCD corrections to the forward–backward asymmetry in ee annihilation. Here we recall the results and compare them to others in the literature. RAL–TR–1999–048 CERN–TH/99–204 July 1999 Talk given by M. Seymour at 13th Rencontres de Physique de la Vallée d’Aoste, Results and Perspectives in Particle Physics, La Thuile, Aosta Valley, Italy, February 28t...

The forward-backward asymmetry at NNLO revisited

I reconsider the forward-backward asymmetry for flavoured quarks in electron-positron annihilation. I suggest an infrared-safe definition of this observable, such that the asymmetry may be computed in perturbative QCD with massless quarks. With this definition, the first and second order QCD corrections are computed.

tt̄ CROSS-SECTION AND FORWARD-BACKWARD ASYMMETRY AT CLIC

A top-quark reconstruction method at Clic is described. The reconstructed events are used to measure the ee → tt̄ cross-section as well as the forwardbackward asymmetry. The results suggest that the measurement accuracy for the cross-section will be δσ σ = 1.4 % and for the asymmetry δAF B AF B = 4.2 % for 1 ab.