Belle II Theory Interface Platform (B2TIP)

Overview

The "Belle II-Theory Interface Platform" is a joint theory-experiment effort to study the potential impacts of the Belle II program.

We plan to organise meetings twice a year gathering theory experts and Belle II members, starting from June 2014 until the end of 2016.

One of the expected outcomes of the project is a "KEK Green Report", summarising all the important observables which will be measured at Belle II, their experimentally achievable precision and their impact on our understanding of the theory (Standard Model and New Physics). This report should also include a "milestones table" clarifying the targets for the first 5 to 10 ab-1 of data as well as for the final goal at 50 ab-1.

Table of golden modes ( link ).

B2TiP minutes/proceedings ( invenio )

This project is an official activity of Belle II, approved by the executive board of the Belle II Collaboration in February 2014.

Workshop Dates

The 2014 meetings will be held at KEK in June and November, as a satellite meeting of the Belle and Belle II General meetings. There is a possibility of holding one workshop in 2015 at an external location. Individual working groups may choose to hold additional meetings. Please register for the meetings on the linked indico pages.

Committees

WG1

Semileptonic & Leptonic B decays

Guglielmo De Nardo (Naples)

Anze Zupanc (IJS Slovenia)

Minoru Tanaka (Osaka)

Frank Tackmann (DESY)

Ryoutaro Watanabe (IBS)

A. Kronfeld (Fermilab)

WG2

Radiative & Electroweak Penguins

• Radiative
  • Inclusive radiative decays: gamma via inclusive, partial and full reconstruction tagging methods.
  • Inclusive radiative decays: and via sum of exclusive methods.
  • Exclusive radiative decays (polarisation and asymmetries):
    • : , ,
    • : ,,
  • TCPV in Radiative decays, e.g. , (overlap with bottom)
• Electroweak
  • EWP with neutrinos, ,
  • Inclusive dilepton decays via sum of exclusive, and fully inclusive methods:
  • Exclusive dilepton decays with a focus on electron modes:
• Rare and forbidden
  • 
  • Neutral leptonic decays, , ,
  • Lepton flavour and number violating decays,

Akimasa Ishikawa (Tohoku)

Jared Yamaoka (PNNL)

Ulrich Haisch (Oxford)

Thorsten Feldman (Siegen)

WG3

alpha = phi_2 & beta = phi_1

• : , ,
• :
  • precision in ,
  • New phases in transitions, , ,
• TCPV in Radiative decays, e.g. , (overlap with above)

Luigi Li Gioi (MPI Munich)

Alessandro Gaz (Nagoya)

Jure Zupan (Cincinnati)

Satoshi Mishima (KEK)

WG4

Gamma = phi_3

• Charm CP Eigenstates, GLW method (Gronau- London- Wyler) e.g.
• Doubly Cabbibo suppressed decays, ADS method (Atwood- Dunietz- Soni), e.g.
• Three body decays, GGSZ Dalitz method (Giri- Grossman- Soffer - Zupan), e.g. ,
• Combined GLW+ADS method e.g. , ,

Jim Libby (Madras)

Ian Watson (Tokyo)

Yuval Grossman (Cornell)

Monika Blanke (CERN)

WG5

Charmless Hadronic B Decay

• Direct CP Violation
• modes, angular analyses
• Charmless hadronic modes,
• 2 body
• 3 body with Dalitz methods,
• Hadronic decays
• QCD factorisation, flavour symmetry breaking

Pablo Goldenzweig (KIT)

Martin Beneke (TUM)

Cheng-Wei Chiang (NCU)

S. Sharpe (Washington)

WG6

Charm

• mixing
• TCPV in Charm
• Direct CPV in Charm
• Rare/Forbidden charm decays and NP: ,
• Leptonic and Semileptonic charm decays
• Spectroscopy of charmed hadrons

Giulia Casarosa (Pisa)

Alan Schwartz (Cincinnati)

Alexey Petrov (Wayne)

Alex Kagan (Cincinnati)

WG7

Quarkonium(like)

• Bottomonia at
• Inclusive baryon and meson production in decays
• Energy scan studies of bottomonia
• Charmonia, exotic, charmonium-like
  • below the open-charm threshold
  • above the open-charm threshold
• -Hadron production at

Roman Mizuk

(ITEP)

Roberto Mussa (Torino)

Chengping Shen (Beihang)

Bryan Fulsom (PNNL)

Christoph Hanhart (Juelich)

Yuichiro Kiyo (Juntendo)

Antonello Polosa (Rome)

S. Prelovsek (Ljubljana)

WG8

Tau, low multiplicity & EW

• Tau
  • Lepton flavour violating decays
  • properties
  • Lepton universality
  • CP Violation
  • Precision measurements of SM decays
• Low multiplicity
• Two Photon Physics
• Precision electroweak physics ("LEP"-physics)
• Searches for dark photon in direct production (via kinetic mixing) and exotic final states

Kiyoshi Hayasaka (Niigata)

Torben Ferber (UBC)

Emilie Passemar (Indiana U.)

Junji Hisano (Nagoya)

WG9

New Physics

• Benchmark models/points for 5, 10, 50 data (create a “milestone table; which indicates the goal for 5, 10, 50 for given new physics models (providing theoretical predictions for various physics processes with those models))
• Model dependent/independent constraints fit (to prepare the constraints figure for given observables, public code for the fits)
• Relation to measurements from other experiments (e.g. LHC, neutrino, dark matter, future experiments)

Ryosuke Itoh (KEK)

Florian Bernlochner (Bonn)

Yutaro Sato (Nagoya)

Ulrich Nierste (KIT)

Luca Silvestrini (Rome)

Jernej Kamenik (IJS Ljubljana)

Silvano Simula (Rome 3)