1 code implementation • 2 Nov 2020 • Marco Ciuchini, Marco Fedele, Enrico Franco, Ayan Paul, Luca Silvestrini, Mauro Valli
We perform an analysis within the Standard Model of $B^{0,+} \to K^{*0,+} \mu^+ \mu^-$ decays in light of the recent measurements from the LHCb experiment, showing that new data strengthen the need for sizable hadronic contributions and correlations among them.
High Energy Physics - Phenomenology High Energy Physics - Experiment
no code implementations • 11 Sep 2020 • Marco Fedele, Alessio Mastroddi, Mauro Valli
The flavour problem of the Standard Model can be addressed through the Froggatt-Nielsen (FN) mechanism.
High Energy Physics - Phenomenology
1 code implementation • 8 Jul 2020 • Lina Alasfar, Aleksandr Azatov, Jorge de Blas, Ayan Paul, Mauro Valli
We discuss how these solutions to $b \to s \ell \ell$ anomalies, respecting electroweak precision and without any new source of flavour violation, may point to the existence of a $Z^{\prime}$ boson at around the TeV scale, within the discovery potential of LHC, or to leptoquark scenarios.
High Energy Physics - Phenomenology High Energy Physics - Experiment
1 code implementation • 30 Oct 2019 • Jorge de Blas, Debtosh Chowdhury, Marco Ciuchini, Antonio M. Coutinho, Otto Eberhardt, Marco Fedele, Enrico Franco, Giovanni Grilli di Cortona, Victor Miralles, Satoshi Mishima, Ayan Paul, Ana Penuelas, Maurizio Pierini, Laura Reina, Luca Silvestrini, Mauro Valli, Ryoutaro Watanabe, Norimi Yokozaki
$\texttt{HEPfit}$ is a flexible open-source tool which, given the Standard Model or any of its extensions, allows to $\textit{i)}$ fit the model parameters to a given set of experimental observables; $\textit{ii)}$ obtain predictions for observables.
High Energy Physics - Phenomenology High Energy Physics - Experiment
1 code implementation • 22 Mar 2019 • Marco Ciuchini, António M. Coutinho, Marco Fedele, Enrico Franco, Ayan Paul, Luca Silvestrini, Mauro Valli
We focus on effects that violate Lepton Flavour Universality both in the Weak Effective Theory and in the Standard Model Effective Field Theory.
High Energy Physics - Phenomenology High Energy Physics - Experiment
1 code implementation • 11 Sep 2018 • Marco Ciuchini, Antonio M. Coutinho, Marco Fedele, Enrico Franco, Ayan Paul, Luca Silvestrini, Mauro Valli
Motivated by the persisting 'anomaly' in the measurement of $P_5^\prime$, we review hadronic uncertainties entering the angular observables of the decay $\bar B\to {\bar K}^*\mu^+\mu^-$.
High Energy Physics - Phenomenology
1 code implementation • 18 Apr 2017 • Marco Ciuchini, Antonio M. Coutinho, Marco Fedele, Enrico Franco, Ayan Paul, Luca Silvestrini, Mauro Valli
Within the standard approach of effective field theory of weak interactions for $\Delta B = 1$ transitions, we look for possibly unexpected subtle New Physics effects, here dubbed "flavourful Easter eggs".
High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment
1 code implementation • 14 Nov 2016 • Marco Ciuchini, Marco Fedele, Enrico Franco, Satoshi Mishima, Ayan Paul, Luca Silvestrini, Mauro Valli
Disentangling New Physics effects from the Standard Model requires a good understanding of all pieces that stem from the latter, especially the uncertainties that might plague the theoretical estimations within the Standard Model.
High Energy Physics - Phenomenology High Energy Physics - Experiment
1 code implementation • 22 Dec 2015 • Marco Ciuchini, Marco Fedele, Enrico Franco, Satoshi Mishima, Ayan Paul, Luca Silvestrini, Mauro Valli
We critically reassess the theoretical uncertainties in the Standard Model calculation of the $B \to K^* \ell^+ \ell^-$ observables, focusing on the low $q^2$ region.
High Energy Physics - Phenomenology
