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23–27 Sept 2024
Europe/Zurich timezone

Novel approaches to determine B± and B0 meson production fractions

26 Sept 2024, 17:30
30m

Speaker

Greg Landsberg (Brown University (US))

Description

We propose novel methods to determine the Υ(4S)B+B and Υ(4S)B0B¯0 decay rates. The precision to which they and their ratio are known yields at present a limiting uncertainty around 2% in measurements of absolute B decay rates, and thus in a variety of applications, such as precision determinations of elements of the Cabibbo-Kobayashi-Maskawa matrix and flavor-symmetry relations. The new methods we propose are based in one case on exploiting the Υ(5S) datasets, in the other case on the different average number of charged tracks in B± and B0 decays. We estimate future sensitivities using these methods and discuss possible measurements of fd/fu at the (HL-)LHC.

Co-authors

Florian Urs Bernlochner (University of Bonn (DE)) Greg Landsberg (Brown University (US)) Martin Jung (Università di Torino & INFN) Munira Khan (Bonn Univ.) Zoltan Ligeti (Lawrence Berkeley National Lab. (US))

Presentation materials