Open LHCb Workshop on semileptonic exclusive $b\rightarrow c$ decays
Bruno Touschek Auditorium
INFN - Laboratori Nazionali di Frascati
The semileptonic decays of heavy hadrons are a rich source of observables sensitive to SM and NP paramaters. Despite the efforts from both experimental and theoretical sides, the measurements of the CKM parameter $|V_{cb}|$ from inclusive and exclsuive decays, remain in significant tension. Moreover, the measurements of the ratios $R=BF(B\rightarrow D^{(*)}\tau\nu_{\tau})/ BF(B\rightarrow D^{(*)}\ell\nu_{\ell})$ have gained in the last decade a lot of interests because of the intriguing discrepancies with their precise SM expectations. Even if the tension with the SM seems reduced with the accumulation of more measurements, more precise measurements and solid SM predictions would be welcome. If confirmed, the discrepancy would be a clear sign of violation of Lepton Universality (LU).
The main goal of the workshop is to enlarge the potential of these measurements at LHCb, with a critical comparison with the results from B-Factories and prospects from Belle II. The measurements of $|V_{cb}|$ and the predictions of the ratios R from exclusive $b\to c$ decays, require crucial input from non perturbative calculations of the Form Factors. New observables, accessibile from detailed studies of final state angular distributions, are very sensitive to NP models and can also constrain the shape of the Form Factors.
Another topic that will be discussed is related to common systematic uncertainties that affect measurements both at LHCb and B-Factories. For example the production of excited charm-hadrons in semileptonic decays, that is a source of physical background. Moreover there are common tools that could be shared between the various experiments to speed up the analysis process and for better understanding of common systematics.
Finally, these analyses require improvements in external inputs from both theory and experiment. Some of these inputs would need dedicated measurements from other facilities, as BESIII. A coordination accross experiments would be beneficial for many analyses.
All of this will be discussed during the first two days of the workshop between the LHCb community, the theorists of flavour physics and the experimentalists from other heavy flavour facilities. Friday morning will be dedicated to internal discussions of the LHCb collaboration.
The Workshop will be held in the "Bruno Touschek" Auditorium (Bldg. 36). Participants will access from the LNF secondary entrance in Via E. Fermi, 60 (see map).
Abhijit Mathad
Adlene Hicheur
Alejandro Vaquero Avilés-Casco
Alessandra Gioventù
Andrew MORRIS
Anna Lupato
Anton Poluektov
Antonio Romero Vidal
Barbara Sciascia
Benjamin Stefanek
Biljana Mitreska
Blaise Delaney
Bogdan Kutsenko
Chen Chen
Davide Fazzini
Dorothea vom Bruch
Elisa Minucci
Emi Kou
Federico Manganella
Florian Bernlochner
Florian Reiss
Francesca Acanfora
Frank Meier
Fulvia De Fazio
Gaya Benane
Giulio Mezzadri
Greg Ciezarek
Guy Wormser
Havva Hasret Nur
Ho Yin Derek Yeung
Lopamudra Mukherjee
Lorenzo Paolucci
Lucia Grillo
Ludovico Vittorio
Marcello Rotondo
Maria Cristina D'Amato
Mark Smith
Markus Prim
Marta Calvi
Martin Jung
Martina Ferrillo
Michael Hedges
Michel De Cian
monica pepe altarelli
Nico Gubernari
Oliver Witzel
Olivier Leroy
Patrick Owen
Patrizia De Simone
Philipp Horak
Ricardo Vazquez Gomez
Rizwaan Mohammed
Scott Ely
Silvano Simula
Stefania Vecchi
Suzanne Klaver
Tejhas Kapoor
Vlad Dedu