Rare semileptonic B Decays: Theory and Experiment (bsll2019)

Sep 4, 2019, 8:30 AM → Sep 6, 2019, 6:15 PM Europe/Paris

Amphi Dirac (Lyon, IP2I)

Nazila Mahmoudi (Lyon University), Aoife Bharucha (CPT), Marie-Helene Schune (LAL), Sébastien Descotes-Genon (LPT Orsay), Yasmine Amhis (LAL), Francesco Polci (LPNHE), Giampiero Mancinelli, Karim Trabelsi

This workshop is the seventh in the series of workshops dedicated to semileptonic flavour changing neutral current b hadron decays, which aims to bring together experts from both experimental and theoretical communities. Semileptonic B decays are sensitive probes for physics beyond the Standard Model. Long standing tensions between Standard Model expectations and measurements have been observed since 2013, including hints for violation of lepton flavour universality. The workshop aims at discussing the observed anomalies, theoretical issues and implications, experimental situation and prospects and interplay between the LHC experiments as well as the Belle-II experiment.

b2sllworkshop_poster.png

LIO-2019_dinner.pdf

Wed, September 4

9:00 AM Registration

1 Introduction

Speaker: Nazila Mahmoudi (Lyon University)

bsll2019_Welcome.pdf

Measurements of b → sll observables

Conveners: Danny van Dyk (TU München), Dr Eluned Smith (RWTH Aachen)

2 Review of past Belle measurements

Speaker: Simon WEHLE (DESY)

swehle.pdf

3 Lepton flavour universality measurements at LHCb

Speaker: Dr Paula Alvarez Cartelle (Imperial College)

palvarez.pdf

10:30 AM coffee break

Measurements of b → sll observables

Conveners: Danny van Dyk (TU München), Eluned Smith (RWTH Aachen)

4 LHCb results on rare $\Lambda_{b}$ decays

Speakers: Carla MARIN BENITO ({CNRS}UMR8607), Michal Kreps (Warwick)

b2sll_Lbmeasurements_2019_final.pdf

5 Prospects for CMS analyses

Speaker: Greg Landsberg (Brown University)

glandsberg.pdf

6 Overview of unbinned $\K^{*0}\mu\mu$ angular analyses at LHCb

Speakers: Andrea Mauri (Zürich ), Konstantinos Alexandros Petridis (University of Bristol)

amauri-kpetridis.pdf

7 Prospects for future Belle-II measurements

Speaker: Akimasa Ishikawa (Saga University)

20190904b2sll_v2_ishikawa.pdf

1:00 PM lunch break

Perturbative and non-perturbative aspects of theory predictions

Conveners: Giulio Dujany (CNRS - IPHC), Roman Zwicky

8 Sum rules for B->Kpi form factors

Speakers: Sébastien Descotes-Genon (LPT), Sébastien Descotes-Genon (LPT Orsay)

slides_bslllyon_sdg.pdf

9 Bu,d,s->gamma form factors from LCSR

Speaker: Roman Zwicky

19_Lyon.pdf

10 Form factors and charm-loop effect with light-cone sum rules

Speaker: Nico Gubernari (Technische Universität München)

Gubernari.pdf

4:00 PM coffee break

Perturbative and non-perturbative aspects of theory predictions

Conveners: Giulio Dujany (CNRS - IPHC), Roman Zwicky

11 Estimating non-factorizable contributions using B -> J/\psi K* observables

Speaker: Rusa Mandal (IFIC, Universitat de València-CSIC)

12 Long distance effects in inclusive rare B decays and phenomenology of B ̄ → Xd l+l−

Speaker: Jack Jenkins (Indiana University)

Jenkins_Lyon.pdf

13 Resolved contributions in the inclusive Bbar --> X_s/d ell ell decays

Speaker: Tobias HURTH (Johannes Gutenberg University Mainz)

Lyon2019.pdf

7:00 PM welcome drink

Thu, September 5

Determinations of Wilson coefficients

Conveners: Konstantinos Petridis, Peter Stangl (LAPTh Annecy)

14 Global Fits of 𝑏→𝑠ℓℓ Decays

Speaker: Siavash Neshatpour (Institute for Research in Fundamental Sciences (IPM))

Siavash_bsll2019.pdf

15 Emerging patterns of New Physics with and without Lepton Flavour Universal contributions

Speaker: Marcel Algueró (Institut de Física d'Altes Energies (IFAE))

Marcel_Alguero_Lyon.pdf

10:30 AM coffee break

Determinations of Wilson coefficients

Conveners: Konstantinos Petridis, Peter Stangl (LAPTh Annecy)

16 Empirical determinations of long-distance contributions to b->sll

Speaker: Rafael Silva Coutinho (University of Warwick (GB))

talk_RafaelCoutinho.pdf

17 Measurements of CP asymmetries in b->s(d)ll transitions

Speaker: Eluned Smith (RWTH Aachen)

LyonSmith2019.pdf

18 b->sll in the context of the global SMEFT likelihood

Speaker: David Straub (Universe Cluster, TUM)

straub-lyon-2019.pdf

19 Buffer for discussions

1:00 PM lunch break

New Physics interpretations and potential tests

Conveners: Martino Borsato, Marzia Bordone

20 High-$p_{\rm T}$ searches related to flavour anomalies

Speaker: Marcella Bona (Queen Mary, University of London)

bona-NPsearches.pdf

21 Searches for Lepton Flavour Violation in $B$ decays

Speaker: Francesco Polci (LPNHE)

LFV_btosllWorkshop2019.pdf

22 Loops of Vector-like fermions as a solution to B anomalies

Speaker: Marco Fedele (ICCUB)

Lyon_Fedele.pdf

4:00 PM coffee break

New Physics interpretations and potential tests

Conveners: Martino Borsato, Marzia Bordone

23 Scalar lepto-quarks

Speaker: Pere Arnan (Universitat de Barcelona ICCUB)

Lyon_ScalarLQ_Arnan.pdf

24 B anomalies and SM flavor hierarchies

Speaker: Javier Fuentes-Martin (University of Zurich)

fuentes_bsll2019.pdf

25 Interplay between $B$ mixing and anomalies

Speaker: Matthew Kirk (IPPP, Durham University)

Kirk_Lyon_bsll2019.pdf

8:00 PM Workshop Dinner

Fri, September 6

New observables / new ideas

Conveners: Carla MARIN BENITO ({CNRS}UMR8607), Olcyr Sumensari (LPT - Orsay)

26 How to further exploit meson decays?

Speaker: Christoph Langenbruch (RWTH Aachen)

langenbruch.pdf

27 Angular distributions of rare baryon decays

Speaker: Martín Novoa Brunet (LPT Orsay)

Talk_at_b____sll_workshop_Lyon_September_2019__Study_of___b___________KN___ll_decay__Copy_.pdf

10:30 AM coffee break

New observables / new ideas

Conveners: Carla MARIN BENITO ({CNRS}UMR8607), Olcyr Sumensari (LPT - Orsay)

28 Experimental prospects on baryons

Speaker: Thomas Blake (University of Warwick)

tblake_baryons.pdf

29 Hunting tau-loops in B->Kmumu

Speaker: Matthias König

1909_bsll_koenig.pdf

30 Prospects with tau's at LHCb and Belle-II

Speaker: justine serrano (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

bsllworkshop.pdf

31 Open discussion

Speakers: Carla MARIN BENITO ({CNRS}UMR8607), Olcyr Sumensari (LPT - Orsay)

1:00 PM lunch break

Discussions

32 Discussion on CMS B physics program and interplay with LHCb

33 Open discussions

4:00 PM coffee break