2023 Belle II Physics Week

Session

Workshop: Vcb exclusive

30 Oct 2023, 14:20

Kobayashi Hall (KEK)

Conveners

Workshop: Vcb exclusive

• Dean Robinson (BNL)

Workshop: Vcb exclusive

• Takashi Kaneko (KEK)

Workshop: Vcb exclusive

• Lu Cao (BELLE (BELLE Gruppe))

3. Experimental challenges in exclusive measurements

Robert Kowalewski (University of Victoria)

30/10/2023, 14:20

Review recent measurements with focus on current limitations: are we already systematically limited? how to circumvent this?
 Is there a Vcb dependence on parametrisation (recent measurements do not indicate so)? Dependence on truncation on BGL expansion, how to choose (eg. nested hypothesis tests)? New ideas, eg down-feed D* in D categories to measure the w spectrum

5. Theoretical challenges in the exclusive determinations

Zoltan Ligeti (Berkley)

30/10/2023, 15:20

Developments in FF model independent approaches. How to assess potential biases from various models or sum rule-based approaches? 
How do we systematically decide on the truncation order of a parametrization (Akaike IC, Nested Hyp. test, …). Can we develop a benchmark test to compare different methods? 
For HQET-based parametrizations of B -> D/D*, how do we assess the role of and incorporate...

7. Beyond unfolded distributions

Markus Prim (BELLE (BELLE II Experiment))

30/10/2023, 16:45

Which measurements can we provide to improve knowledge on form factors? What are the shortcomings of unfolded distributions? 
What can we provide beyond/along-with them? 
What can angular analyses add?

8. Lattice tensions

Alejandro Vaquero (UNIZAR)

30/10/2023, 17:45

What are the tension: review/comparison of recent calculations by Fermilab/MILC,HPQCD,JLQCD. 
What are the key differences among the 3 calculations and possible origin of the tension? 
What's needed to identify the origin of the tension: what short-term future results/calculations are planned?

13. FF, polarisation and asymmetries in D*lnu

Marco Fedele (KIT)

31/10/2023, 13:45

Discuss https://arxiv.org/abs/2305.15457 and DM