Challenges in Semileptonic B Decays

Session

Heavy to light inclusive

Sep 26, 2024, 1:30 PM

25. Updating inclusive Vub in the factorization framework (aka BLNP)

Bjorn O. Lange (Siegen University)

9/26/24, 1:30 PM

In the past two decades significant advances have been made
on the perturbative ingredients of the leading-power factorization
formula for $B \to X_u \ell \nu$, as well as local parameters in the
heavy-quark expansion. An update for partial rates in the
"shape-function region" is overdue. The main uncertainty still
concerns the leading-power shape function, where we explore novel
ideas...

22. Inclusive $B —> X_u\ell\nu$: Towards NNLO Extractions of $V_{ub}$

Bernat Capdevila (IFAE)

9/26/24, 2:00 PM

In this talk, I will present a short overview of inclusive $b\to u$ semileptonic decays, focusing on the current status of the BLNP and GGOU approaches—the two most active frameworks for $V_{ub}$ extractions in recent years. I will delve deeper into the GGOU approach, highlighting our work and status on the NNVub framework, which utilises neural networks for parametrising the required shape...

46. B -> Xulnu inclusive at Belle/Belle II

Dr Lu Cao (University of Bonn)

9/26/24, 2:30 PM

This talk will review the inclusive B->Xu l nu measurements at Belle and present the status of ongoing activities at Belle II with a focus on the potential improvements in the analysis strategies.

42. Discussion -- Vub

Alexander Khodjamirian, Dr Lu Cao (University of Bonn)

9/26/24, 3:00 PM