Focus on:  Hide Contributions
Back to Conference View
Login

The Semileptonic B Frontier: LHC, B-factories, Lattice QCD & the Hunt for Precision

→ Europe/Rome
Aula Salvini (Aula Salvini, Building 36, Laboratori Nazionali di Frascati (Rome), Italy)

Aula Salvini

Aula Salvini, Building 36, Laboratori Nazionali di Frascati (Rome), Italy

Via E. Fermi, 54 IT 00044 Frascati (Rome)
Patrizia De Simone (Istituto Nazionale di Fisica Nucleare), Giuseppe Finocchiaro (INFN - Laboratori Nazionali di Frascati), Elisa Minucci, Marcello Rotondo (Istituto Nazionale di Fisica Nucleare), Federico Mescia (Istituto Nazionale di Fisica Nucleare)
Description

The aim of the workshop is to bring together theorists and experimentalists working on various aspects of semileptonic b-hadron decays for both charged and neutral flavour changing current processes. Topics will include recent developments, open questions, and future directions, including novel lattice approaches for inclusive B decays, CKM determinations, hadronic form factors, and potential signals of New Physics. 

 

Participants will review the latest B-physics experimental results and the theoretical inputs, will discuss new observables and tools to enhance the future analyses. The aim of the workshop is to foster the collaboration across different communities, to improve the understanding of experimental systematic uncertainties and theoretical calculations in this crucial area of flavor physics.

 

This activity is part of the Theoretical Phenomenology Visiting Institute @ LNF, running from 16 to 27 February 2026, and supported by CSN4 to promote the participation of early-career scientists.

 

The local organizers are partially supported by the PRIN 2022 project
"Semileptonic B decays at the junction of experiment and theory", funded by the Italian Ministry of University and Research (MUR) and the European Union (EU). PRIN 2022, CUP I53D23001320006.

 

Important dates: 

  • Deadline to registration 31 January 2026

Local Advisor Committee:

  • Giuseppe Finocchiaro (INFN-LNF)
  • Patrizia de Simone (INFN-LNF)
  • Marcello Rotondo (INFN-LNF)  
  • Elisa Minucci (INFN-LNF)
  • Fulvia De Fazio (INFN-Bari)
  • Giuseppe Gagliardi (INFN-RM3)
  • Federico Mescia (INFN-LNF)
  • Francesco Sanfilippo (INFN-RM3)
  • Nazario Tantalo (U. Roma "Tor Vergata" & INFN-RM2)
  • Ludovico Vittorio (U. Sapienza & INFN-RM1)

International Advisor Committee:

  • Lukas Allwhicher (DESY)
  • Michel De Cian (Manchester)
  • Marco Fedele (Mainz)
  • Damir Becirevic (Orsay)
foto_gruppo_The Semileptonic B Frontier- LHC, B-factories, Lattice QCD & the Hunt for Precision_2026 (1).png
INFN Privacy Policy .pdf
SCHEDA-COMPORTAMENTALE-EN (1).pdf
WiFi SSID INFN instructions for events_The Semileptonic.pdf
Contact
Participants
55 View full list
The Semileptonic B Frontier
Zoom Meeting ID
83118552237
Host
Alessandra Tamborrino Orsini
Zoom URL
  • Monday 16 February
    • 14:00 → 14:45
      Overture
      introduzione.pdf
      • 14:00
        The semileptonic B Frontier 45m
        Speaker: Matteo Fael (Istituto Nazionale di Fisica Nucleare)
        Frascati2026.pdf
    • 14:45 → 16:15
      Charged-current semileptonic decays of b-hadrons

      Current status of angular analysis and measurements of |Vcb| from semileptonic decays: experimental techniques and source of systematic uncertainties at BFactories and LHC. Current status of transition form factor calculations for b-hadrons decays: open questions and prospects.

      Convener: Marcello Rotondo (Istituto Nazionale di Fisica Nucleare)
      • 14:45
        Charged-current semileptonic b hadrons decays at LHCb 45m
        Speaker: Biljana Mitreska (University of Manchester)
        Frascati_workshop_2026_Mitreska.pdf
      • 15:30
        Charged-current semileptonic b hadron decays at Belle and Belle II 45m
        Speaker: Giovanni Gaudino (Istituto Nazionale di Fisica Nucleare)
        2026-02-16-Gaudino.pdf
    • 16:15 → 16:35
      Coffee break 20m
    • 16:35 → 18:40
      Charged-current semileptonic decays of b-hadrons

      Current status of angular analysis and measurements of |Vcb| from semileptonic decays: experimental techniques and source of systematic uncertainties at BFactories and LHC. Current status of transition form factor calculations for b-hadrons decays: open questions and prospects.

      Convener: Ludovico Vittorio (Sapienza Università di Roma and INFN, Sezione di Roma)
      • 16:35
        $B \rightarrow D^*$ decays: extraction of the hadronic FF’s from experimental data 30m
        Speaker: Silvano Simula (Istituto Nazionale di Fisica Nucleare)
        LNF26.pdf
      • 17:05
        $B \rightarrow D^*$ decays: extraction of the hadronic FF’s from lattice calculations 30m
        Speaker: Alejandro Vaquero (Universidad de Zaragoza)
        Frascati-Talk.pdf
      • 17:35
        $B \rightarrow D^*$ decays: extraction of the hadronic FF’s with the Heavy Quark Expansion 30m
        Speaker: Nico Gubernari (Siegen University)
        talk_Frascati.pdf
  • Tuesday 17 February
    • 09:30 → 11:10
      Selected topics
      Convener: Martin Jung (Istituto Nazionale di Fisica Nucleare)
      • 09:30
        Inclusive $B \to X_u\ell\nu$: Towards NNLO Extractions of $V_{ub}$ 25m
        Speaker: Bernat Capdevila (Universitat de Barcelona)
        TheSemileptonicBFrontier2026.pdf
      • 09:55
        One-Loop QCD Corrections to $B \to X_c \ell \nu$ Beyond the Standard Model 25m
        Speaker: Gael Finauri (Istituto Nazionale di Fisica Nucleare)
        slides.pdf
      • 10:20
        Inclusive $B_{s}$ decays from lattice QCD 25m
        Speaker: Alessandro Barone (Johannes Gutenberg University, Mainz)
        LNF_Barone.pdf
      • 10:45
        Inclusive $D_{s}$ decays from lattice QCD 25m
        Speaker: Antonio Smecca (Istituto Nazionale di Fisica Nucleare)
        Smecca_LNF26.pdf
    • 11:10 → 11:40
      Coffee break 30m
    • 11:40 → 13:30
      Selected topics
      Convener: Anna Lupato (Universita' degli Studi di Bergamo)
      • 11:50
        Search for CP violation in semileptonic B meson decays at the LHCb experiment 25m
        Speaker: Anna-Maria Heyn (Centre de Physique des Particules de Marseille)
        sl_B_frontier_cpv_in_triple_products_heyn.pdf
      • 12:15
        Measurement of the differential distributions of $B_s^0\to D_s^{*-} \mu^+\nu_{\mu}$ decay with the LHCb detector 25m
        Speaker: Federico Manganella (Istituto Nazionale di Fisica Nucleare)
        LNF_Manganella.pdf
      • 12:40
        Radiative corrections to semileptonic decays of B Hadrons 25m
        Speaker: Zach Polonsky (Jožef Stefan Institute, Ljubljana)
        Frascati_Polonsky.pdf
      • 13:05
        Model-independent method for measuring the angular coefficients of $B \rightarrow D^* e \nu_e$ decays 25m
        Speaker: Lea Dreyfus (Centre de Physique des Particules de Marseill)
        FrascatiBWorkshop_method_comparison_forB2dstlnu_LDreyfus.pdf
    • 13:30 → 14:30
      Lunch 1h
    • 14:30 → 16:00
      LFU violation: Status of experimental tests and prospects of new physics

      Current SM predictions for $R(D)$ and $R(D^*)$ and analogous ratios for other b-hadrons. Implications and prospects on these calculations.
      Review of the current ratio measurements, focusing on experimental techniques used by BaBar and LHCb, challenges and source of systematic uncertainties. Opportunities with "other" b-hadron semileptonic decays and spectroscopy.

      Convener: Maria Laura Piscopo (Nikhef)
      locandina2026.pdf
      • 14:30
        Status of LFU tests at LHCb 45m
        Speaker: Ricardo Vazquez Gomez (Universitat de Barcelona)
        VazquezGomez_LFUatLHCb-1.pdf
      • 15:15
        Status of LFU tests at Belle and Belle II 45m
        Speaker: Tommy Martinov (Istituto Nazionale di Fisica Nucleare)
        SL_B_Frontier_LFU.pdf
    • 16:00 → 16:30
      Coffee break 30m
    • 16:30 → 17:15
      LFU violation: Status of experimental tests and prospects of new physics

      Current SM predictions for $R(D)$ and $R(D^*)$ and analogous ratios for other b-hadrons. Implications and prospects on these calculations.
      Review of the current ratio measurements, focusing on experimental techniques used by BaBar and LHCb, challenges and source of systematic uncertainties. Opportunities with "other" b-hadron semileptonic decays and spectroscopy.

      locandina2026.pdf
      • 16:30
        LFU violation: prospectives of new physics? 45m
        Speaker: Mauro Valli (Istituto Nazionale di Fisica Nucleare)
        LNF_2026_MV.pdf
    • 17:15 → 18:25
      Data taking perfomance and future plans
      Convener: Giuseppe Finocchiaro (INFN - Laboratori Nazionali di Frascati)
  • Wednesday 18 February
    • 09:30 → 11:00
      Neutral-current semileptonic decays of b-hadrons

      Current status of branching ratio measurements an angular analysis of $b \rightarrow sll$ decays at LHC and B-factories. Current status of local and non-local transition form factor calculations: open questions and prospects.

      Convener: Anton Poluektov (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)
      • 09:30
        Status of $b \rightarrow s ll$ decays measurements at LHC 45m
        Speaker: Lorenzo Paolucci (University of Manchester (UK))
        review_b2sll_LHC_17_02_2026_v2.pdf
      • 10:15
        Status of $b \rightarrow s ll$ decays with missing energy at Belle and Belle II 45m
        Speaker: Elisa Manoni (Istituto Nazionale di Fisica Nucleare)
        SLBF_emanoni_170226.pdf
    • 11:00 → 11:30
      Coffee break 30m
    • 11:30 → 13:30
      Neutral-current semileptonic decays of b-hadrons

      Current status of branching ratio measurements an angular analysis of $b \rightarrow sll$ decays at LHC and B-factories. Current status of local and non-local transition form factor calculations: open questions and prospects.

      Convener: Francesco Sanfilippo (INFN Roma3)
      • 11:30
        $b \rightarrow s l l$ decays: status of transition FF's calculations 45m
        Speaker: Arianna Tinari (University of Zürich)
        lnf_tinari.pdf
      • 12:15
        $b \rightarrow s l l$ decays: status of lattice calculations 45m
        Speaker: Giuseppe Gagliardi (Istituto Nazionale di Fisica Nucleare)
        GG_LNF.pdf
      • 13:00
        Discussion 30m
        conclusioni.pdf