856. WE-Heraeus-Seminar: Challenges in Semileptonic B Decays 2026

from Saturday, 11 April 2026 (09:00) to Thursday, 16 April 2026 (20:00)
Physikzentrum Bad Honnef (PBH)

        : Sessions
    /     : Talks
        : Breaks
11 Apr 2026
12 Apr 2026
13 Apr 2026
14 Apr 2026
15 Apr 2026
16 Apr 2026
AM
09:00
Sunday Morning (until 12:10)
09:15 Welcome - Markus Tobias Prim (University of Bonn (DE))  
09:20 R(D/D*) from Babar - Abi Soffer (Tel Aviv University (IL))  
09:50 An experimental overview of Belle II LFU tests - Ilias Tsaklidis (University of Bonn) Ilias Tsaklidis Ilias Tsaklidis  
10:15 --- Tea break ---
10:45 Status of R(D/D*) measurements at Belle II with inclusive tagging - Tia Crane  
11:15 Status of combined B -> D/D* l nu measurements with Belle II - Michele Mantovano (University and INFN Trieste) Michele Mantovano (Universita & INFN Pisa (IT)) Michele Mantovano (DESY) MICHELE MANTOVANO  
11:45 Discussion  
09:00
Heavy to light (until 12:15)
09:00 Status of inclusive Vub determinations - Lu Cao (Fudan University) Dr Lu Cao (University of Bonn)  
09:30 B to Xu l nu and Vub measurement at Belle II - Tommy Martinov Tommy Martinov (INFN Trieste)  
10:00 --- Tea break ---
10:45 Novel b-> u ell nu hybrid model - Philipp Horak (University of Victoria)  
11:15 Inclusive b -> u discussion - Keri Vos (Nikhef National institute for subatomic physics (NL))  
09:00
Tuesday Morning (until 12:10)
09:15 SL D(*) pi and Review of the Gap with possible candidate modes - Raynette van Tonder (KIT) Raynette Van Tonder (Karlsruhe Institute of Technology)  
09:45 An experimental overview of Belle II measurements of D** decays - Nada Gharbi  
10:15 --- Tea break ---
11:00 Angular Analysis of B -> D* l nu with LHCb - Biljana Mitreska (CERN) Biljana Mitreska (The University of Manchester (GB))  
11:30 R(D/D*) Combinations: how can we improve - Lucia Grillo (University of Glasgow (GB))  
09:00
Wednesday Morning (until 12:20)
09:00 NP in B-> Xc (or higher orders) - Gael Finauri Gael Finauri  
09:30 Measurement of the inclusive semileptonic B meson branching fraction with dileptons - Christoph Schwanda (Austrian Academy of Sciences (AT))  
10:00 Status of moment measurements relevant for inclusive Vcb determinations with Belle II - Munira Khan (University of Bonn)  
10:30 --- Tea break ---
11:10 Massive yet Beautiful; the b Quark Kinetic Mass in full QCD - Rens Verkade  
11:40 ETM inclusive rate - Alessandro De Santis Alessandro De Santis  
08:00 Departure  
PM
15:00 Arrival Saturday Evening & joint Dinner  
18:00 Dinner   (Basement)
14:00
Sunday afternoon (until 17:50)
14:00 Soft Photon corrections to semileptonic decays - Federico Cima  
14:30 Fermilab/MILC B->D exclusive form factors - Alejandro Marino Vaquero Avilés-Casco (Universidad de Zaragoza) Dr Alejandro Vaquero Avilés-Casco (University of Utah)  
15:00 B-> D(*) l nu with light leptons - Stefan Schacht (Durham University)  
15:30 --- Tea break ---
16:15 RBC/UKQCD exclusive form factors focus Bs to Ds star - Oliver Witzel (Universität Siegen) Oliver Witzel (University of Edinburgh)  
16:45 On the simulated kinematic distributions of semileptonic B decays - Raynette van Tonder (KIT) Raynette Van Tonder (Karlsruhe Institute of Technology) Florian Herren (UZH)  
17:05 Discussion - Marzia Bordone (JGU Mainz)  
12:15 --- Group Photo ---
14:00
Heavy to light (until 17:45)
14:00 Theory review of B -> pi pi l nu decays - Florian Herren (UZH)  
14:30 B to rho l nu at LHCb - Michel De Cian (The University of Manchester (GB))  
15:00 --- Tea break ---
15:45 Fermilab/MILC B->π etc. exclusive form factors - Andreas Kronfeld  
16:15 FLAG perspective - Dr Enrico Lunghi (Indiana University) Enrico Lunghi  
16:45 On-shell Vcb measurement at Atlas - Elisabeth Schopf (Universitaet Siegen (DE))  
17:15 Discussion session  
20:30
Lightning Talks (until 22:00)
20:30 Testing Lepton Flavour Universality with Λb → Λc τ ν - Mrityunjoy Singha (Eotvos Lorand University (HU))  
20:35 Towards relaxing the standard model assumption in R(D(*)+) - Dylan Cameron Houston (University of Glasgow (GB)) Dylan Houston (University of Glasgow (GB))  
20:40 Poster: B(s) → D(s) semileptonic decay form factors from highly improved staggered quarks - Akhil Chauhan  
20:45 Poster: B -> pi l nu using n_f = 2+1+1 highly improved staggered quarks - Nick Cassar  
20:50 Poster: New Physics in B \to \ell \nu decays - Danilo Ricciardella  
20:55 Poster: Status and prospects for |Vub| measurements - Alois Caillet (Centre National de la Recherche Scientifique (FR))  
21:00 Poster: Angular Analysis of $B^0 \to D^{* -}\mu^+ \nu_\mu$ at LHCb - David Vico Benet (University of Oxford (GB))  
21:05 Poster: Measurement of the Branching Ratio and CKM Matrix element |V_{cb}| in $B→ X_c l nu Semileptonic Decays at Belle II - Rajeshwari Roy  
14:00
Tuesday Afternoon (until 17:25)
14:00 Phenomenological studies of Lambda_b -> Lambda_c Tau Nu - Biplab Dey (Eotvos U.)  
14:30 LHCb & Belle II b -> c tau nu Combinations - Maria Colonna Marco Colonna (Technische Universitaet Dortmund (DE))  
15:00 Semileptonic Baryonic decays - Anna Lupato (Università di Bergamo & INFN Padova)  
15:30 --- Tea break ---
16:15 Heavy quark physics in the ALPHA Collaboration: strategy and application to semileptonic $B$-decay form factors - Gregorio Herdoiza  
16:45 Angular analysis in Bs to Ds* ell nu - Federico Manganella (INFN e Universita Roma Tor Vergata (IT))  
13:35
Afternoon (until 17:20)
14:00 FCC-ee as a discovery machine for Flavor: a theorists view - Zoltan Ligeti (Lawrence Berkeley National Lab. (US))  
14:30 Inclusive charm (theory) - Qin Qin  
15:00 Inclusive SL charm decays at BES III and outlook for STCF - Alexander Leon Gilman (University of Cincinnati (US)) Alex Gilman Alex Gilman  
15:30 --- Tea break ---
16:15 Bumpy road toward understanding of the incl/excl puzzle through lattice - Shoji Hashimoto (KEK) Shoji Hashimoto (KEK)  
16:40 FCC-ee as a discovery machine for Flavor: an experimentalists view - Marie-Helene Schune (Université Paris-Saclay (FR)) Marie-Helene Schune (Université Paris-Saclay (FR))  
17:05 Closeout - Florian Urs Bernlochner (University of Bonn (DE))