Future of Heavy Flavour Physics: Experimental Perspective

Abstract

I discuss what measurements need to be done to search for physics beyond the Standard CKM model, rather than just what studies can be done in the near future. It is also important to accurately measure the CKM matrix elements. Current best estimates for two important elements are: |V cb | = 0.0381 ± 0.0021 and |V ub /V cb | = 0.085 ± 0.019. Finally, future experiments are discussed.

Overall Determination of the CKM Matrix

“…This was also emphasised by [6] and will (and already does) limit our understanding of the CKM parameters. Given that a "theoretical" error has an unclear statistical meaning, we conclude that extracting any p.d.f.…”

Conference summary

“…This check can reveal new physics, even if other measurements have not shown any anomalies. There are other checks using V ub V cb or V td Vts [1]. Another interesting way of viewing the physics was given by Peskin [7].…”

“…The models used are either inclusive predictions, sums of exclusive channels, or both [29]. The average among the models is |V ub /V cb | = 0.079±0.006, without a model dependent error [1]. These models differ by at most 11%, making it tempting to assign a ±6% error.…”

“…The values and the errors are controversial. These problems are caused by the basic theory being applicable to quarks while we make measurements on hadrons [1].…”

FUTURE B EXPERIMENTS FROM THE BTEV/LHC-B PERSPECTIVE

“…2, with constraints from other measurements. 6 Also shown are the angles α, β, and γ. Since they form a triangle the "real" α, β and γ must sum to 180 • ; therefore measuring any two of these determines the third.…”