Rare semileptonic B Decays: Theory and Experiment (bsll2019)

4 sept. 2019, 08:30 → 6 sept. 2019, 18:15 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

mercredi 4 septembre

09:00 → 09:20 Registration

09:20 → 09:30 Introduction

Orateur: Nazila Mahmoudi (Lyon University)

bsll2019_Welcome.pdf

09:30 → 10:30 Measurements of b → sll observables

Présidents de session: Danny van Dyk (TU München), Dr Eluned Smith (RWTH Aachen)

09:30 Review of past Belle measurements

Orateur: Simon WEHLE (DESY)

swehle.pdf

10:00 Lepton flavour universality measurements at LHCb

Orateur: Dr Paula Alvarez Cartelle (Imperial College)

palvarez.pdf

10:30 → 11:00 coffee break

11:00 → 13:00 Measurements of b → sll observables

Présidents de session: Danny van Dyk (TU München), Eluned Smith (RWTH Aachen)

11:00 LHCb results on rare $\Lambda_{b}$ decays

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

b2sll_Lbmeasurements_2019_final.pdf

11:30 Prospects for CMS analyses

Orateur: Greg Landsberg (Brown University)

glandsberg.pdf

12:00 Overview of unbinned $\K^{*0}\mu\mu$ angular analyses at LHCb

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

amauri-kpetridis.pdf

12:30 Prospects for future Belle-II measurements

Orateur: Akimasa Ishikawa (Saga University)

20190904b2sll_v2_ishikawa.pdf

13:00 → 14:30 lunch break

14:30 → 16:00 Perturbative and non-perturbative aspects of theory predictions

Présidents de session: Giulio Dujany (CNRS - IPHC), Roman Zwicky

14:30 Sum rules for B->Kpi form factors

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

slides_bslllyon_sdg.pdf

15:00 Bu,d,s->gamma form factors from LCSR

Orateur: Roman Zwicky

19_Lyon.pdf

15:30 Form factors and charm-loop effect with light-cone sum rules

Orateur: Nico Gubernari (Technische Universität München)

Gubernari.pdf

16:00 → 16:30 coffee break

16:30 → 18:30 Perturbative and non-perturbative aspects of theory predictions

Présidents de session: Giulio Dujany (CNRS - IPHC), Roman Zwicky

16:30 Estimating non-factorizable contributions using B -> J/\psi K* observables

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

17:00 Long distance effects in inclusive rare B decays and phenomenology of B ̄ → Xd l+l−

Orateur: Jack Jenkins (Indiana University)

Jenkins_Lyon.pdf

17:30 Resolved contributions in the inclusive Bbar --> X_s/d ell ell decays

Orateur: Tobias HURTH (Johannes Gutenberg University Mainz)

Lyon2019.pdf

19:00 → 20:00 welcome drink

jeudi 5 septembre

09:30 → 10:30 Determinations of Wilson coefficients

Présidents de session: Konstantinos Petridis, Peter Stangl (LAPTh Annecy)

09:30 Global Fits of 𝑏→𝑠ℓℓ Decays

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

Siavash_bsll2019.pdf

10:00 Emerging patterns of New Physics with and without Lepton Flavour Universal contributions

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

Marcel_Alguero_Lyon.pdf

10:30 → 11:00 coffee break

11:00 → 13:00 Determinations of Wilson coefficients

Présidents de session: Konstantinos Petridis, Peter Stangl (LAPTh Annecy)

11:00 Empirical determinations of long-distance contributions to b->sll

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

talk_RafaelCoutinho.pdf

11:30 Measurements of CP asymmetries in b->s(d)ll transitions

Orateur: Eluned Smith (RWTH Aachen)

LyonSmith2019.pdf

12:00 b->sll in the context of the global SMEFT likelihood

Orateur: David Straub (Universe Cluster, TUM)

straub-lyon-2019.pdf

12:30 Buffer for discussions

13:00 → 14:30 lunch break

14:30 → 16:00 New Physics interpretations and potential tests

Présidents de session: Martino Borsato, Marzia Bordone

14:30 High-$p_{\rm T}$ searches related to flavour anomalies

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

bona-NPsearches.pdf

15:00 Searches for Lepton Flavour Violation in $B$ decays

Orateur: Francesco Polci (LPNHE)

LFV_btosllWorkshop2019.pdf

15:30 Loops of Vector-like fermions as a solution to B anomalies

Orateur: Marco Fedele (ICCUB)

Lyon_Fedele.pdf

16:00 → 16:30 coffee break

16:30 → 18:30 New Physics interpretations and potential tests

Présidents de session: Martino Borsato, Marzia Bordone

16:30 Scalar lepto-quarks

Orateur: Pere Arnan (Universitat de Barcelona ICCUB)

Lyon_ScalarLQ_Arnan.pdf

17:00 B anomalies and SM flavor hierarchies

Orateur: Javier Fuentes-Martin (University of Zurich)

fuentes_bsll2019.pdf

17:30 Interplay between $B$ mixing and anomalies

Orateur: Matthew Kirk (IPPP, Durham University)

Kirk_Lyon_bsll2019.pdf

20:00 → 23:00 Workshop Dinner

vendredi 6 septembre

09:00 → 10:30 New observables / new ideas

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

09:30 How to further exploit meson decays?

Orateur: Christoph Langenbruch (RWTH Aachen)

langenbruch.pdf

10:00 Angular distributions of rare baryon decays

Orateur: Martín Novoa Brunet (LPT Orsay)

Talk_at_b____sll_workshop_Lyon_September_2019__Study_of___b___________KN___ll_decay__Copy_.pdf

10:30 → 11:00 coffee break

11:00 → 13:00 New observables / new ideas

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

11:00 Experimental prospects on baryons

Orateur: Thomas Blake (University of Warwick)

tblake_baryons.pdf

11:30 Hunting tau-loops in B->Kmumu

Orateur: Matthias König

1909_bsll_koenig.pdf

12:00 Prospects with tau's at LHCb and Belle-II

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

bsllworkshop.pdf

12:30 Open discussion

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

13:00 → 14:30 lunch break

14:30 → 16:00 Discussions

14:30 Discussion on CMS B physics program and interplay with LHCb

15:00 Open discussions

16:00 → 16:30 coffee break