We report results of the branching fractions $\mathcal{B}(\bar{B}^0\to D^{*+}\pi^{-})$ and $\mathcal{B}(\bar{B}^0\to D^{*+}K^{-})$ measured using $772\times 10^{6}$ $B$-meson pairs recorded by the Belle experiment at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The measurements provide a precise test of QCD factorization. We also report the study of the branching fraction $B^+ \to...
The latest studies of beauty meson decays to open charm final states from LHCb are presented. Several first observations and branching fraction measurements using Run 1 and Run 2 data samples are shown. These decay modes will provide important spectroscopy information and inputs to other analyses.
The tree-level determination of the CKM angle gamma is a standard candle measurement of CP violation in the Standard Model. The latest LHCb results from measurements of CP violation using beauty to open charm decays are presented. These include measurements using the full LHCb Run 1+2 data sample and the latest LHCb gamma & charm mixing combination.
The investigation of $B$-meson decays to charmed and charmless hadronic final states is a keystone of the Belle II physics program. It allows for theoretically reliable and experimentally precise constraints on the CKM Unitarity Triangle fit, and is sensitive to effects from non-SM physics. Results on branching ratios, direct CP-violating asymmetries, and polarization of various charmless...
The ATLAS experiment has performed measurements of B-meson rare decays proceeding via suppressed electroweak flavour changing neutral currents, and of mixing and CP violation in the neutral $B_s$ meson system. This talk will focus on the latest results from the ATLAS collaboration, such as rare processes $B^0_s \to \mu \mu$ and $B^0_d \to \mu \mu$, and $CP$ violation in $B^0_s \to J/\psi...
The presence of charmonium in the final states of B decays is a very clean experimental signature that allow the efficient collection of large samples of these decays. In addition, decays of beauty hadrons to final states with charmonium resonances proceed mainly through $b\to ccq$ tree-level transitions. The negligible penguin pollutions make these decays excellent probes of Standard Model...
The study of CP violation patterns across the phase space of multibody charmless B decays is of great interest as it brings information on the dynamics of residual strong interactions between quarks in the initial and final states of the decay. Understanding this dynamics is fundamental to distinguish between QCD effects and potential contributions from physics beyond the standard model. In...
Measurements of decay-time dependent CP violation are chief goals of the Belle II physics program. Comparison between penguin-dominated $b\to q\bar{q}s$ and tree-dominated $b\to c\bar{c}s$ results allows for stringent tests of CKM unitarity that are sensitive to non-SM physics. This talk present first Belle II results on the mixing rate and lifetime of $B^0$ mesons, an essential validation...
Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm hadron lifetimes Recent results from measurements of $D^0$ meson, $D^+$ meson and $\Lambda_c$ baryon lifetimes are presented. The results are the most precise to date.
BESIII has collected 2.93 and 6.32 $fb^-1$ of $e^+e^-$ collision data samples at 3.773 and
4.178-4.226 GeV, respectively. We will report precision measurements of $f_{Ds}$, $|V_{cs}|$
and test of lepton flavor universality by studying the leptonic decays of $D_s -> l^+ \nu$
with $\tau^+ -> \rho^+ \nu, \pi^+ \nu$, and $e^+ \nu \nu$. We will also report the observation of
semileptonic decay...
BESIII has collected 4.4 $fb^{-1}$ of $e^+e^-$ collision data between 4.6 and 4.7 GeV. This unique data offers ideal oppurtunity to determine absolute branching fractions of
$\Lambda_c^+$ decays. We will report the first observation of $\Lambda_c^+ -> n \pi^+$.
Meanwhile, we will report prospect on the studies of semileptonic and the other
hadronic decays of $\Lambda_c^+$ in the near future.
The Cabibbo-Kobayashi-Maskawa (CKM) mechanism predicts that a single parameter must be responsible for CP-violating phenomena in different quark sectors of the Standard Model (SM). Despite this minimal picture, challenged by non-SM physics, the CKM mechanism has been so-far verified in the bottom and strange sectors, but lacks tests in the complementary charm sector. For the sake of this,...
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure $D^0 -\overline{D}^0$ mixing and to search for $C\!P$ violation in mixing and interference. New measurements from several decay modes are presented, as well as prospects for future sensitivities.
CP violation in charm meson decays is expected to be small, and an observation of a large CP asymmetry could indicate new physics. We report measurement of branching fractions and CP asymmetries in $D \to K h \pi \pi^{0}$ $(h = \pi, K)$ and T-odd asymmetry, sensitive to CP violation, in the $D^{0} \to K^{0}_{S}K^{0}_{S}\pi^{+}\pi^{-}$ decay, and $D_{(s)}\to KK^{0}_{S}\pi\pi$. The talk also...
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure direct $C\!P$ violation in $D$ mesons and charmed baryons. New measurements from several decay modes are presented, as well as prospects for future sensitivities.
LHCb is playing a crucial role in the study of rare and forbidden decays of charm hadrons, which might reveal effects beyond the Standard Model. We present the latest searches for, and measurements using, rare charm decay processes with two leptons in the final state.
BESIII has collected 2.93 and 6.32 $fb^{-1}$ of $e^+e^-$ collision data samples at 3.773 and at 4.178-4.226 GeV, respectively. We will report the observation of $D^0 -> \omega \phi$ and the
transverse polarization determination, the observation of $D^0 -> K_LX (X=\eta, \eta',
\omega$, and $\phi$) and $K_S/K_L$ asymmetry measurements. Also, amplitude analyses of $D_s ->
K^+\pi^+\pi^-,...
The observed matter-antimatter asymmetry in the universe composes a serious
challenge to our understanding of nature. BNV/LNV decays have been searched in many
experiments to understand this large-scale observed fact, and few in the case of
$e^+e^-$ collision experiments are performed. In this talk, we present recent
results to search for BNV and LNV from $J/\psi$, $D^+$, $D^0$ and...
Recent high precision determinations of $V_{us}$ and $V_{ud}$ indicate towards anomalies in the first row of the CKM matrix. Namely, the determination of $V_{ud}$ from beta decays and of $V_{us}$ from kaon decays imply a violation of first row unitarity at about $3\sigma$ level. Moreover, there is tension between determinations of $V_{us}$ obtained from leptonic $K\mu 2$ and semileptonic...
The proposal for a next-generation rare pion decay experiment, PIONEER, has recently been approved to the Paul Scherrer Institute (PSI) ring cyclotron.
PIONEER is strongly motivated by several inconsistencies between Standard Model (SM) predictions and data pointing towards the potential violation of lepton flavor universality. It will probe non-SM explanations of these anomalies through...
We report the first observation of the decay Kยฑ โ ฯ0 ฯ0 ฮผยฑ ฮฝ (K00ยต4) by the NA48/2 experiment at the CERN-SPS. From 2437 detected signal candidates with a S/B ratio of about 6, the branching ratio of the decay is determined with high precision. The result is converted into a first measurement of the R form factor in Kl4 decays and compared with the prediction from 1-loop Chiral Perturbation Theory.
The NA62 experiment at CERN collected world's largest dataset of charged kaon decays to di-lepton final states in 2016-2018, using dedicated trigger lines. Upper limits on the rates of several K+ decays violating lepton flavour and lepton number conservation, obtained by analysing this dataset, are presented.
The KOTO experiment studies the CP-violating rare decay $K_L \to \pi^0 \nu \overline{\nu}$, conducting with the 30-GeV Main Ring Proton Synchrotron at J-PARC in Japan. In the previous analysis on data taken in 2016-18, we found three candidate events in the signal region with a single event sensitivity of $7\times 10^{-10}$, which is statistically consistent with the background expectation....
The KLOE-2 Collaboration continues the KLOE long-standing tradition of flavour physics precision measurements in the kaon sector with a new $K_S \to \pi e \nu$ branching fraction measurement.
Based on a sample of 300 million $K_S$ mesons produced in $\phi \to K_L K_S$ decays recorded by the KLOE experiment
at the DA$\Phi$NE $e^+e^-$ collider, the $K_S \to \pi e \nu$ signal selection...
The quantum interference between the decays of entangled neutral kaons is a very powerful tool for testing the quantum coherence of the entangled kaon pair state. The studied process ฯ โ KS KL โ ฯ+ ฯโ ฯ+ ฯโ exhibits the characteristic EinsteinโPodolskyโRosen correlations that prevent both kaons to decay into ฯ + ฯ โ at the same time. The newly published result is based on data sample...
Lepton flavor violation in the charged lepton sector (cLFV) is expected to be unobservably small in the Standard Model (SM). On the other hand, many new physics theories predict rates of cLFV near the sensitivity of the current experiments. Hence, this is a very sensitive probe for physics beyond the SM, and the evidence for such new physics would be unambiguous if a positive observation is...
The Mu3e experiment at the Paul-Scherrer-Institut searches for the charged lepton flavour violating decay $\mu^+\rightarrow e^+e^-e^+$. This decay mode is extremely suppressed in the Standard Model, such that any observation would be a clear signature for new physics being at play. The experiment will be conducted in two phases. In Phase I, a single event sensitivity of $2 \times 10^{-15}$ is...
Precision measurements of flavour-violating processes are a sensitive tool to search for signals beyond the Standard Model (SM). In this context, the MEG II and Mu3e experiments at the Paul Scherrer Institut (PSI) search for the two muon decays $\mu^+ \to e^+\gamma$ and $\mu^+ \to e^+e^-e^+$, respectively. In addition to their main channels, both experiments appear to be competitive in...
The low-background environment of electron-positron collisions along with the large expected sample size and an hermetic detector make Belle II the premier experiment for studying tau-lepton physics. This talk presents recent world-leading physics results from Belle II searches for tau decays into a scalar non-SM particle and a lepton. Perspectives on tests of lepton (flavor) universality and...
We report a partial wave analysis conducted in $\tau^{-} \to \pi^{-}\pi^{-}\pi^{+}\nu$ decays, where it is expected that the new resonance $\text{a}_1(1420)$ that has been observed by COMPASS experiment can be studied as well as which provides the detailed study of $\text{a}_1(1260)$. In addition, we report the searches for New Physics in $\tau$ decays, especially with its decay involving...
The spontaneous muonium to antimuonium conversion is one of the interesting
charged lepton flavor violation processes. It serves as a clear indication of
new physics and plays an important role in constraining the parameter space
beyond Standard Model. MACE is a proposed experiment to probe such a phenomenon
and expected to enhance the sensitivity to the conversion probability by...
The muon anomaly, $a_\mu=(g_{\mu}-2)/2$, is a low-energy observable which can be both measured and computed to high precision, making it a sensitive test of the Standard Model and a probe for new physics. The current discrepancy between the Standard Model calculation from the Muon $g-2$ Theory Initiative [T. Aoyama et al. - Phys. Rept. 887 (2020), 1-166] and the experimental value is...
Among the simplest new physics explanations of the muon g-2 anomaly are scenarios with chirally enhanced contributions. The new particles can be very heavy, even beyond the reach of future colliders, and thus the confirmation of such explanations might rely only on indirect evidence. I will discuss that these models generically predict correlations with related signatures that include possible...
The recent measurement of the muon g-2 at Fermilab confirms the previous Brookhaven result. The leading hadronic vacuum polarization (HVP) contribution to the muon g-2 represents a crucial ingredient to establish if the Standard Model prediction differs from the experimental value. A recent lattice QCD result by the BMW collaboration shows a tension with the low-energy e+eโโhadrons data which...
The discrepancy between the standard model prediction for the muon anomalous magnetic moment and the experimental result is accompanied by other anomalies. A crucial input for the prediction is the hadronic vacuum polarization inferred from hadronic data. However, the two most accurate determinations from KLOE and BaBar disagree by almost 3 sigma. Additionally, the combined data-driven...
We reconsider kinetically mixed dark photons as an explanation of the $(g-2)_\mu$ anomaly. While fully visible and invisible dark photon decays are excluded, a semi-visible solution can still explain the discrepancy. We explicitly re-evaluate the constraints from B-factories and fixed-target experiments, namely BaBar and NA64, pointing to a solution in terms of dark sector models with dark...
SUSY is still a viable solution to the muon $g$โ2 anomaly. Focusing on its minimal version (MSSM), I provide an overview of its current status, including constraints from the LHC Run 2, expected limits from future experiments, and connections to the relic density of the lightest SUSY particle as the dark matter.
I will cover all the four possible "simplified mass spectra" for the $g$โ2...
The Cabibbo-Kobayashi-Maskawa (CKM) element $V_{ub}$ is an important input parameter for the theoretical predictions of many observables in the flavor sector as it is responsible for the CP violating phase within the Standard Model. There exists a long standing tension between the tree-level determinations using the inclusive $B \to X_u l \nu$ decays (where $X_u$ refers to sum over all final...
Semileptonic $B$ decays allow to determine the magnitudes of the CKM matrix parameters $|V_{cb}|$ and $|V_{ub}|$, two fundamental parameters of the standard model flavor sector. At Belle II these measurements use both exclusive decays such as $B\to D^*\ell\nu$ and $B\to\pi\ell\nu$, or inclusive $X_c\ell\nu$ or $X_u\ell\nu$ final states restricted in phase space. The low-background collision...
Semileptonic heavy-to-light $B$ decays are very intriguing transitions mainly because a long-standing tension affects the inclusive and the exclusive determinations of the CKM matrix element $\vert V_{ub} \vert$. Our goal is to re-examine the $b \to u$ quark transitions through the Dispersive Matrix (DM) approach. The DM method is based on the non-perturbative determination of the dispersive...
Though the Belle experiment has stopped data taking more than a decade ago, new results on semileptonic B meson decays are still being obtained. This is in part due to new experimental tools elaborated for Belle II applied to the Belle data set, such as the FEI (Full Event Interpretation) hadronic and semileptonic tag which enables new, more precise measurements of $B \to D^{*}\ell\nu$ and $B...
Semileptonic b-hadron decays to a final state with a heavy lepton are sensitive to new couplings, such as those generated by charged Higgses or Leptoquarks. The B-Factories and LHCb have performed measurements of these decays, using different approaches and techniques. A global average of measurements of ratios of branching fractions to final states with taus or light leptons shows a...
We present an application of the unitarity-based dispersion matrix (DM) approach of Ref. [1] to the extraction of the CKM matrix element $|V_{cb}|$ from the experimental data on the exclusive semileptonic $B_{(s)} \to D_{(s)}^{(*)} \ell \nu_\ell$ decays [2-4]. The DM method allows to achieve a non-perturbative, model-independent determination of the momentum dependence of the semileptonic form...
Semileptonic decays of $B$ mesons involving the high-mass $\tau$ lepton are sensitive probes for physics beyond the Standard Model. The relative rates of branching fractions $R(D) = \mathcal{B}(B \to D \tau \nu) / \mathcal{B}(B \to D \ell\nu)$ and $R(D^*) = \mathcal{B}(B \to D^* \tau \nu) / \mathcal{B}(B \to D^* \ell \nu)$ $(\ell=e,\mu)$ are independent of the CKM element $|V_{cb}|$ and of...
We develop a modified power-counting within the heavy quark effective theory (HQET),
that results in a highly constrained set of second-order power corrections in the heavy quark expansion, compared to the standard approach. We implement this modified expansion to determine all $\bar{B} \to D^{(*)}$ form factors, both within and beyond the Standard Model, to $\mathcal{O}(\alpha_s,...
Employing the full $BABAR$ dataset we extract form-factors for $\overline{B}\to D^{(\ast)}\ell^m \overline{\nu}_\ell$ using the hadronic tagging method. For $\overline{B}\to D\ell^m \overline{\nu}_\ell$, a two-dimensional angular analysis is performed in both $q^2$ and the lepton helicity angle. The two $B\to D$ form factors are determined using a joint fit with available lattice data. This...
The rate of semitauonic $B$ decays has been consistently above theory expectations since these decays were first measured. Recently significant differences between the forward-backward asymmetry in $B\rightarrow D^โe\nu$ and $B\rightarrow D^โ\mu\nu$ were also reported. Belle II data is well suited to probe such anomalies. The low-background collision environment along with the possibility of...
We demonstrate a new event generator tool based on EvtGen that allow us to simulate new physics (NP) signatures in ${\bar B}\to D^{*+}\ell^- {\bar\nu}_\ell$ decays. Recent experimental results from Belle, Babar and LHCb have all pointed towards new physics in the weak semileptonic $b \to c$ transitions which urge for an immediate need of advanced analysis techniques which we achieve through...
We discuss the effects of lepton flavor universality violation affecting $b\to c \tau \nu$ decays. Besides $R(D^{(\ast )})$ and $R(J/\psi)$ we also discuss $R(\Lambda_c)$, as well as the observables that can be extracted from angular distribution of the exclusive semileptonic decays of mesons and baryons, the measurement of which can help discriminating among various scenarios of New Physics....
I discuss exclusive $B_c$ decays. FIrst I consider the case of semileptonic modes $B_c^+\to B_a\bar{l}\nu_l$ and $B_c^+\to B^*_a(\to B_a\gamma)\bar{l}\nu_l$, with $a=s,d$ and $l = e,\mu$ in the Standard Model (SM) and in its extension based on the low-energy Hamiltonian comprising the full set of dimension-6 semileptonic $c\to s,d$ operators with left-handed neutrinos. Heavy quark spin...
We present the first determination of $|V_{cb}|$ from $q^2$-moments of inclusive $B \to X_c \ell \bar \nu_\ell$ decays, with $q^2$ denoting the dilepton invariant mass. The $q^2$ moments and the total rate are reparametrization invariant quantities and depend on a reduced set of non-perturbative parameters. This reduced set opens a way to extract these parameters up to $1/m_b^4$ purely from...
The radiative and electroweak-penguin $B$ decays mediated via $b\to s\gamma$ and $b\to s\ell^+\ell^-$ transitions, respectively, are sensitive to new physics since new heavy particles can enter in the loop altering decay branching fractions and other kinetic observables. Search for the lepton-flavor violation and the test of lepton-flavor universality through these processes are also of...
New particles beyond the standard model (SM) can affect the standard model processes by taking part in quark loops in the diagrams. The b-->s l l transition is knows to be a sensitive laboratory for such contributions, and several deviations from SM predictions were recently reported. In this talk, the recent CMS results on B meson decays involving b-->s l l process are discussed.
Even though the LHC searches did not unveil the new physics particles so far, observations made at LHCb and the $B$-factories point towards lepton flavor universality violation in both tree-level and loop-induced $B$-meson semileptonic decays. A minimal solution to this problem is to combine two scalar leptoquarks (LQ) with $\mathcal{O}(1~\mathrm{TeV})$ masses. We will show that there are only...
Flavour-Changing Neutral-Current processes, such as decays mediated by b-> sll transitions, are forbidden at the lowest perturbative order in the Standard Model (SM) and hence might receive comparatively large corrections from new particles in SM extensions. These corrections may affect different observables related to these decays such as branching fractions or angular distributions. The most...
We will discuss the time-dependent analysis of $B\to P(S)\ell\ell$ taking into account the time evolution of the $B_{d}$ meson and its mixing into $\bar{B}_d$. The inclusion of time evolution allows us to identify six new observables.
We also show that these observables could be obtained by time-integrated measurements in a hadronic environment if flavour tagging is available.
We
provide...
Radiative rare b-hadron decays are sensitive probes of New Physics through the study of branching fractions, angular observables, CP asymmetries and measurements of the polarisation of the photon emitted in the decay. The LHCb experiment is ideally suited for the analysis of these decays due to its high trigger efficiency, as well as excellent tracking and particle identification performance....
Results are presented on LF(U)V tests through precise measurements of decays involving heavy mesons and leptons, which are compared to the standard model predictions. The measurements use 13 TeV pp collision data collected by the CMS experiment at the LHC.
The observation of Lepton-Flavour or Lepton-Number violation would be an incontrovertible sign for New Physics. The LHCb experiment is well suited to search for this phenomena in B-meson decays thanks to its large acceptance and trigger efficiency, as well as its excellent invariant mass resolution and particle identification capabilities. Recent results on searches for lepton-flavour and...
In this talk I will introduce a minimal extension of the Standard Model (SM) featuring two leptoquarks: a doublet with hypercharge 1/6 and a singlet with hypercharge 1/3. Such a particle content is well motivated by what I denote as flavoured-unified theories where families and forces are gauge interactions treated in the same footing. The presence of such a pair of leptoquarks induces...
Decays of B mesons that proceed through electroweak penguin amplitudes attract significant attention due to a number of observed discrepancies between the standard-model predictions and the results. Belle II is expected to perform measurements on channels closely related to those exhibiting anomalies and that are uniquely available to Belle II. These include bโs(d)ฮฝฮฝยฏ and bโs(d)ฯ+ฯโ...
We study the supersymmetric (SUSY) effects on $C_7(\mu_b)$ and $C'_7(\mu_b)$
which are the Wilson coefficients (WC) for $b \to s \gamma$ at b quark
mass scale $\mu_b$ and are closely related to radiative B meson decays.
The SUSY-loop contributions to $C_7(\mu_b)$ and $C'_7(\mu_b)$ are calculated
at leading order (LO) in the Minimal Supersymmetric Standard Model (MSSM) with
general...
Recent CMS measurements of rare B0s meson properties are discussed, including the branching fractions and effective lifetimes. The studies are based on the data collected in pp collisions with sqrt(s) = 13 TeV with the CMS experiment at the LHC.
The persistent hints of LFU violation in $b \to s \ell \ell$ may imply an existence of leptoquarks close to the TeV scale that couple to $b\mu$ and $s\mu$. These leptoquark Yukawa couplings can in full generality be complex and thus provide a new source of CP violation. We show that a large CP phase with a definite sign is perfectly viable for an $S_3$ leptoquark of mass below a few TeV,...
Very rare B-meson decays, in particular Flavour-Changing Neutral-Current processes of the type B(s)-> l+ l-, are an excellent tool to search for New Physics, as they provide a clear experimental signature and they can be predicted very precisely in the Standard Model. Latest measurements of these processes using the large sample of beauty-hadron decays collected by the LHCb experiment during...
The description of the dynamics behind baryonic decays of heavy flavoured particles is very challenging from the theoretical point of view. The branching ratio enhancement close to the p-pbar threshold in multibody decays and the suppression of the branching fractions to two-body final states are very interesting features of these processes. In this presentation, the most recent results of...
Rare B-hadron decays mediated by b-> s l l transitions provide a sensitive test of Lepton Flavour Universality (LFU), a symmetry of the Standard Model by which the coupling of the electroweak gauge bosons to leptons is flavour universal. Extensions of the SM do not necessarily preserve this symmetry and may give sizable contributions to these processes. Precise measurements of LFU ratios are,...
We report the results of the search for baryon-number-violating decay $B^- \to \bar\Xi_c^0 \Lambda_c^-$. We use a data sample containing 772 million $B\bar{B}$ pairs collected by the Belle detector operating at the asymmetric $e^{+}e^{-}$ collider KEKB. The results can be interpreted in terms of the previously-discovered Standard Model decay $B^- \to \bar\Xi_c^0 \Lambda_c^-$, followed by...
Flavor-changing neutral current (FCNC) processes such as $b \to s\ell\ell$ do not occur at tree-level in the Standard Model (SM), which makes them sensitive probes of physics beyond the standard model (BSM). Intriguing BSM hints in $b \to s$ transitions have been observed by multiple flavor physics experiments, LHCb, Belle, BaBar, and Belle II. We have upgraded the event generator EvtGen to...
Flavour physics represents a unique test bench for the Standard Model (SM). New analyses performed at the LHC experiments are now providing unprecedented insights into CKM metrology and new results for rare decays. The CKM picture can provide very precise SM predictions through global analyses. In addition, the Unitarity Triangle analysis can also be exploited to constrain the parameter space...
The study of high-$p_T$ tails at the LHC can be a complementary probe to low-energy observables when investigating the flavour structure of the Standard Model and its extensions.
Motivated by the $B$ anomalies, we study the interplay between low-energy observables and both charged and neutral current Drell-Yan measurements, and their implications for semileptonic interactions.
The...
The Drell-Yan processes $pp\to\ell\nu$ and $pp\to\ell\ell$ at high transverse momentum can provide important probes of semileptonic transitions relevant to flavor physics and complementary to the commonly used low energy observables. We parametrize generic New Physics (NP) contributions to these processes and derive the corresponding bounds by recasting the latest ATLAS and CMS (run 2)...
The abundant production of beauty and charm hadrons in the $5\cdot 10^{12}$ Z boson decays expected at FCC-ee offers outstanding opportunities in flavour physics that exceed those available at Belle II by a factor of twenty, and are complementary to the LHC heavy-flavour programme. A wide range of measurements will be possible in heavy-flavour spectroscopy, rare decays of heavy-flavoured...
Most of the analyses of rare meson decays in the literature assume that neutrinos are Dirac particles and consequently do not consider the possibility of lepton number violating interactions. I will present efficient strategies that would allow experimental collaborations in the future to give us insights whether footprints of Majorana neutrinos might be present in their data.
