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2023 Belle II Physics Week

30 October 2023 to 3 November 2023
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Contribution List

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  1. 27. Flavour physics - 1
    Dr Rusa Mandal (IIT Gandhinagar)
    30/10/2023, 08:30
  2. 28. The anatomy of a semileptonic analysis
    Florian Bernlochner (Belle (SuperKEKB Experiment))
    30/10/2023, 09:45
  3. 29. Performance: what we do and what you can do for us?
    Alessandro Gaz (University of Padova & INFN)
    30/10/2023, 11:30
  4. 1. Opening remarks
    Mirco Dorigo (INFN Trieste)
    30/10/2023, 13:45
  5. 2. The role of |Vcb|
    Luiz Vale Silva (IFIC)
    30/10/2023, 13:55

    The role of Vcb in the global picture: impact of the Vcb puzzle on UT and NP searches

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  6. 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

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  7. 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...

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  8. 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?

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  9. 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?

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  10. 33. Flavour physics 2
    Rusa Mandal (IITGN)
    31/10/2023, 08:30
  11. 34. ECL: an overview
    Prof. Christopher Hearty (University of British Columbia / IPP)
    31/10/2023, 09:45
  12. 35. Tracking: basics
    Yubo Han (BELLE (BELLE Gruppe))
    31/10/2023, 11:30
  13. 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

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  14. 9. SL gap: knowns and unknowns
    Florian Bernlochner (Belle (SuperKEKB Experiment))
    31/10/2023, 14:15

    What is the current knowledge of D(*)(n)pi l nu decays?
 What do we do to fill the gap? Are our assumptions and uncertainties 
(not only for Vcb) reliable? 
Can we do better and what recent measurements brought?

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  15. 10. Can B hadronic help?
    Mirco Dorigo (INFN Trieste)
    31/10/2023, 15:10

    Can hadronic B decays (eg. B->D*eta pi) supplement info on SL-gap modes? Under which assumptions/limitations? Would like to stimulate a discussion on what measurements are possible and pressing on Bhad

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  16. 16. Inputs from Charm
    Xinyu Shan (USTC)
    31/10/2023, 15:45

    This talk will explore the successful endeavors of the BES-III experiment in simulating the decay processes of charmed mesons. Advanced decay models for multibody charm decays based on dedicated partial wave amplitude measurements will be introduced.

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  17. 11. Ways to improve f+-/f00
    James Frederick Libby (BELLE (BELLE II Experiment))
    31/10/2023, 16:45

    To overcome the current used value affected by large isospin-breaking uncertainty, and to account for any c.m.-energy dependence

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  18. 17. Slow-pion efficiency
    Daniel Dorner (BELLE (BELLE II Experiment))
    31/10/2023, 17:15

    The slow-pion efficiency and its associated systematic uncertainty is currently the major limitation of the exclusive measurement with B->D*(D0 pi_s) l nu decays. Can we improve the slow-pion efficiency? Can we reduce its systematic uncertainty?

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  19. 18. Lepton ID challenges
    Kenta Uno (KEK)
    31/10/2023, 17:45

    A key ingredient of SL measurements are LID efficiencies, their corrections and systematic uncertainties. The talk review on this topic with particular focus on current limitations and modelling of LID uncertainty correlations.

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  20. 36. Flavour physics 3
    Dr Rusa Mandal (IIT Gandhinagar)
    01/11/2023, 08:30
  21. 37. FEI: from top-to-bottom
    Niharika Rout (INFN Trieste)
    01/11/2023, 09:45
  22. 38. Belle + Belle II analyses: a how to guide?
    Xiaodong Shi (BELLE (BELLE II Experiment))
    01/11/2023, 11:30
  23. 19. Experimental developments of inclusive inputs
    Lu Cao (BELLE (BELLE Gruppe))
    01/11/2023, 13:45

    Review of Belle/Belle II most recent measurements (q2 moments). 
Measurement of BR(B->Xc l nu) and other going/planned activities on Belle II: Mx, El moments from previous measurements can be updated using Belle II data; angular moments measurement is ongoing. Status, issues and needs for a new determination of the inclusive measurements (e.g. w/ q2 thresholds, approach for handling syst.).

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  24. 20. Vub/Vcb inclusive measurement
    Marcel Hohmann (BELLE (BELLE II Experiment)), Dr Phillip Urquijo (The University of Melbourne)
    01/11/2023, 14:15

    Recent Belle result (first BRs ratio measurement from inclusive decays) and prospects for the decay-width-ratio calculation (a part of th. error can be cancelled in ratio)

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  25. 14. Vub/Vcb from lattice
    Judd Harrison (Glasgow)
    01/11/2023, 14:50

    Lattice calculation of relevant form factors and future prospects

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  26. 21. Theory progress for Vcb inclusive
    Keri Vos
    01/11/2023, 15:20

    |Vcb| from q2 moments [JHEP 10, 068 (2022) ], BR(B->Xc l nu) is needed. Recent theoretical results on kin. moments including NP impacts [JHEP 02, 086 (2023)].

    Exp wish-list from th. experts:

    - recommended phase space region, kinematic threshold

    - further needed exp. inputs 

    - what’s beyond moments?

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  27. 42. Discussion items
    Florian Bernlochner (Belle (SuperKEKB Experiment)), Paolo Gambino (Torino)
    01/11/2023, 16:45
  28. 30. Systematics uncertainties: an introduction
    Bruce Yabsley (BELLE (BELLE II Experiment))
    02/11/2023, 08:30
  29. 31. Lepton identification: an overview
    Kenta Uno (KEK)
    02/11/2023, 09:45
  30. 32. A view from the otherside: semileptonics at LHCb
    Patrick Owen Powen (UZH)
    02/11/2023, 11:30
  31. 12. Loops in inclusive determination
    Matteo Fael (CERN)
    02/11/2023, 13:45
  32. 22. Challenges for a global inclusive analysis
    Marzia Bordone (CERN)
    02/11/2023, 14:20

    Status (only Mx and El moments used), pros/cons of leptonic and hadronic moments. Would a global analysis ever be possible (and useful)? Guidance towards a global analysis -> fit OPE parameters, quark masses, BR

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  33. 24. HAMMER and eFFORT
    Michele Papucci (CALTECH)
    02/11/2023, 15:15

    Discuss any recent ore foreseen developments and needs from analyst (can also collect inputs in advance from Belle 2 people if needed)

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  34. 23. New EvtGen models for D*lnu
    Lopamudra Mukherjee
    02/11/2023, 15:45

    Discuss https://arxiv.org/abs/2203.07189

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  35. 43. Discussion items
    James Frederick Libby (BELLE (BELLE II Experiment))
    02/11/2023, 16:45
  36. 25. Vcb in 3 years and beyond
    Paolo Gambino (Torino)
    02/11/2023, 17:30

    Prospecst for Vcb and what we would like to have in 3 years (possibly taking also inputs from the discussion during the workshop)

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  37. 26. Closing
    Karim Trabelsi (IJCLab (Orsay))
    02/11/2023, 18:15
  38. 39. E_ECL: what it is and how to use it
    Gaetano de Marino (Jožef Stefan Institute)
    03/11/2023, 09:00
  39. 40. Hands-on reports 1 - E_ECL pi0 veto
    Niharika Rout (INFN Trieste)
    03/11/2023, 10:15
  40. 44. Hands on report 2 - rhorho interference
    Riccardo Manfredi (BELLE (BELLE II Experiment))
    03/11/2023, 10:25
  41. 45. Hands on three - fragmentation
    Junewoo Park (University of Tokyo (BELLE II Experiment))
    03/11/2023, 10:35
  42. 41. Hands-on 4 -flavour tagger
    Sebastiano Raiz (BELLE (BELLE II Experiment))
    03/11/2023, 10:45
  43. 46. Hands on 5 - statistics
    Xiaodong Shi (BELLE (BELLE II Experiment))
    03/11/2023, 10:55
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