Welcome address by Dr. Dayna R. Touron, Dean of College of Arts & Sciences
I will review the recent status relating tau physics as well as other leptons.
The measurements of heaviest leptons tau, offer window for precision tests of Standard Model electroweak and medium energy strong interactions. They also are expected to be useful for New Physics signatures. The short lived tau leptons are observed through their decay products. The tau neutrinos escape detection.That complicates phenomenological work, but at the same time enables access to the...
We discuss constraints on the flavor-changing neutral current transitions of taus with photons and gluons.
Lepton flavor violation (LFV) is one of the cleanest probes of physics beyond the standard model. I will summarize the theoretical and experimental status of the search for charged lepton flavor violation in heavy particle decays, in particular in the decays of the Z and Higgs bosons, and of the top quark. Decays of beyond-Standard-Model particles such as a Z' or an additional scalar particle...
Lepton flavor violation is one of the cleanest probes of physics beyond the standard model. In this work, we explore the sensitivity of the process $e^+e^-\to\tau\mu$ to new physics above the TeV scale at the proposed circular electron-positron colliders FCC-ee and CEPC. We compute the $e^+e^-\to\tau\mu$ cross-section in the Standard Model Effective Field Theory and assess the relevant...
The observation of massive neutrino oscillations indicate that lepton flavour is violated beyond the renormalizable standard model (SM). However, extending the SM by merely the existence of neutrino oscillations does not predict an observably large signal in charged lepton flavour violating (cLFV) searches. Therefore, a detection of cLFV would represent a genuine signal of new physics effects...
We study the isospin-breaking and electromagnetic corrections of hadronic tau decays, which can also be utilized to extract the CKM matrix element $V_{us}$. Our analysis extends previous work by Antonelli et al. using ChPT with resonances. Our findings show the importance of these corrections in distinguishing between the $\pi^- \bar{K}^0$ and $K^- \pi^0$ modes, beyond the Low approximation....
Improved measurements of the standard model properties of the tau provide indirect searches for beyond-the-standard-model physics. The low-background samples of $e^+e^- \to \tau^+\tau^-$ events collected by Belle and Belle II allow such measurements. We present a test of the V-A structure of $\tau \to \mu \nu \nu$ decays through the determination of the Michel parameters. In addition, latest...
The low-background environment of electron-positron collisions along with the large expected sample size and a hermetic detector make Belle II a premier experiment for studying tau-lepton physics. This talk presents recent world-leading results from Belle II determinations of the tau lepton mass.
In the past few years there have been new results on the existence of Heavy Neutral Leptons (HNL) in the $\mathcal{O}$(MeV/c$^{2}$-GeV/c$^{2}$) mass range, these results are characterised by new and improved limits on the extended Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix element, $|U_{\tau , 4}|^{2},$ which describes the mixing of some hypothetical HNL and the Standard Model (SM)...
The future Electron-Ion Collider (EIC) at Brookhaven National Laboratory, along with its primary capacity to elucidate the nuclear structure, will offer new opportunities to probe physics beyond the Standard Model coupled to the electroweak sector. Among the best-motivated examples of such new physics are new heavy-neutral leptons (HNLs), which are likely to play a key role in neutrino mass...
We present searches for the charged lepton-flavor-violating decays $\Upsilon(1S) \to \ell \ell'$ and radiative charged lepton-flavour-violating decays $\Upsilon(1S) \to \gamma \ell \ell'$ [where $\ell =e,\mu$ and $\ell'=e,\mu,\tau$] using the 158 million Υ(2S) sample collected by the Belle detector at the KEKB collider. These searches use $\Upsilon(1S)$ mesons produced in...
Exchanging a virtual $\tau$ between a $\mu\to \tau$ and a $\tau\to e$ flavour changing vertex results in $\mu\to e$. This talk will discuss the sensitivity of $\mu\to e$ observables to products of $\mu\to \tau \times \tau \to e$ interactions in the Standard Model Effective Field Theory and in a $Z'$ model. We will show that the exceptional sensitivity of upcoming $\mu\to e$ experiments could...
The Mu2e experiment, based at Fermilab, will search for the coherent, neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus, an example of Charged Lepton Flavor Violation (CLFV). Observation of CLFV at Mu2e would be an unambiguous signal of physics beyond the Standard Model (BSM). Mu2e aims to improve upon the previous upper limit by four orders of...
The Mu2e experiment at Fermilab will search for the CLFV neutrinoless coherent conversion of muon to electron, in the field of an Al nucleus. The experimental signature of the process is a monochromatic conversion electron (CE) with 104.97 MeV/c energy. CE-like electrons could also come from background processes like the cosmic muons, Decay in Orbit (DIO) of muons stopped in the Stopping...
Mu2e-II experiment is a proposed upgrade to the Mu2e experiment (currently in its construction phase) for the purpose of discovering charge lepton flavor violation (CLFV) through muon to electron conversion. The upgrade will use the increased beam capabilities of Fermilab’s PIP-II project to achieve another order of magnitude improvement over the existing Mu2e goal of $10^4$ to the previous...
Semileptonic $b$-hadron decays proceed via charged-current interactions and provide powerful probes for testing the Standard Model and for searching for New Physics effects. The advantages of studying such decays include the large branching fractions and reliable calculations of the hadron matrix elements. In this contribution, LHCb measurements on CKM paramenters and test of new physics will...
In the SM, the electroweak bosons couple to the three lepton families with the same strength, the only difference in their behaviour being due to the difference in mass. In recent years, some deviations have been found in measurements of the ratios of branching fractions for $b$-hadrons decaying into final states with different lepton flavours. This talk presents recent results of lepton...
The Muon $g-2$ experiment at Fermilab aims to measure the muon magnetic moment anomaly, $a_{\mu} = (g-2)/2$, with a final accuracy of 0.14 parts per million. The experiment’s first result published in 2021, based on Run-1 data collected in 2018, confirmed the previous result obtained at Brookhaven National Laboratory with a similar sensitivity. In 2023, the experiment published new results...
Physics of lepton dipole moment is receiving great attentions after the results of the muon $g$-2 experiment at Fermi National Laboratory indicated the measured value of muon $g$-2 was larger than that from the standard model of particle physics. Upcoming experiments as well as theoretical research are supposed to provide crucial information if this anomaly is owing to new physics beyond the...
We propose an alternative method to extract the leading-order hadronic contribution to the muon g-2, $a_{\mu}^\text{HLO}$, with the MUonE experiment. In contrast to the traditional method based on the integral of the hadronic contribution to the running of the electromagnetic coupling, $\Delta\alpha_{had}$, in the space-like region, our approach relies on the computation of the derivatives of...
As part of an ongoing effort to understand the source of the discrepancy between data-driven and lattice determinations of the HVP contribution to a_mu, the anomalous magnetic moment of the muon, we perform data-driven determinations of the light-quark-connected and strange-plus-disconnected contributions to a number of "window" contributions to a_mu, including the RBC/UKQCD intermediate...
We compute for the first time the τ data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon g−2. We show that τ-based results agree with the available lattice window evaluations and with the full result. On the intermediate window, where all lattice evaluations are rather precise and agree, τ-based results are compatible with them. This is particularly...
Precise measurements of magnetic and electric dipole moments are important tests of the standard model and beyond standard model physics, in particular for the electron and the muon. However, when dealing with the tau lepton, the situation presents distinctive challenges due to its very short lifetime and relatively high mass. In this talk, we review the theoretical predictions and the...
The electric dipole moment (EDM) of the tau lepton is a good probe for new physics. The measurement has been and will be performed based on the huge amount of tau-pair production data collected with the high-luminosity colliders. The status of the measurement and prospects for future experiment will be presented.
We will discuss some recent anomalies in the LHC data, which are tantalizing hints of leptophilic dark scalars. Implications for lepton flavor violation and neutrino mass will also be discussed.
Dark sectors that communicate with the visible sector via SM neutrinos are well-motivated benchmarks for current and future experimental searches. However, they are much more elusive than the typical minimal portal scenarios (e.g dark photon, dark Higgs portals). In this talk, we will discuss some models of neutrino portal dark matter that become increasingly more invisible, and describe...
We review the status and importance of lepton flavor violation with tauons, focusing on well-motivated theoretical models, e.g. connected to neutrino mass, and possible novel signatures involving light new physics.
As one of the hypothetical principles in the Standard Model (SM), lepton flavor universality (LFU) should be tested with a precision as high as possible such that the physics violating this principle can be fully examined. The run of $Z$ factory at a future $e^+e^-$ collider such as CEPC or FCC-$ee$ provides a great opportunity to perform this task because of the large statistics and high...
SNO+ aims to detect the neutrinoless double beta decay (0νββ) signals of Te130, which, if observed, would prove neutrinos are Majorana particles that violate lepton number, providing strong evidence for physics beyond the Standard Model, and shed light on the origin of matter over antimatter in the Universe. Between 2017 - 2019, SNO+ took data in the water phase, during which it obtained...
Rates of lepton-flavor violation in charged lepton decays are enhanced in many beyond-the-standard-model theories. The low-background samples of $e^+e^- \to \tau^+\tau^-$ events collected by Belle and Belle II allow world-leading searches for such decays with tau leptons. We present results for the decays $\tau \to \ell V^0$, where $V^0$ is a neutral vector meson, $\tau\to\ell \gamma$, and...
The discovery of neutrino oscillations provided conclusive evidence for lepton flavor violation (LFV). LFV in the neutrino sector is expected to induce charged lepton flavor violation (CLFV), although it is highly suppressed by the small neutrino masses. However, a wide variety of new physics beyond the Standard Model can lead to enhanced rates for CLFV processes within the reach of current...
The existence and unknown nature of dark matter motivate dark sector searches at accelerators. The Belle and Belle II experiments enable dark sector searches in the sub-GeV mass region. We search for lepton-flavor-violating tau decays of type $\tau \to \ell \alpha$, where $\ell = e, \mu$ and $\alpha$ is an invisible particle. We also search for the existence of a heavy neutrino in tau decays....
We present the most recent $BABAR$ searches for reactions that could simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the Universe. This scenario predicts exotic $B$-meson decays into an ordinary-matter baryon and a dark-sector anti-baryon $\psi_D$ with branching fractions accessible at the $B$ factories.
The results are based on the full data set of...
We report on a measurement of the tau lepton polarisation using leptonic and hadronic tau lepton decays in Z -> di-tau events. A sample of pp collisions corresponding to an integrated luminosity of 36.3 fb-1 at a centre of mass energy of 13 TeV is used. The analysis method using template fitting techniques will be described for different decay modes. The measured average polarisation corrected...
Belle II is considering upgrading SuperKEKB with a polarized electron beam. The introduction of beam polarization to the experiment would significantly expand the physics program of Belle II in the electroweak, dark , and lepton flavor universality sectors. For all of these future measurements a robust method of determining the average beam polarization is required to maximize the level of...
The observation of neutrino oscillations provides striking evidence for physics beyond the Standard Model. While multiple neutrino experiments continue to constrain oscillation rates and mass values, one fundamental question remains unanswered: How do neutrinos get their mass? Many theoretical models exist, but so far none of them have been experimentally confirmed. In this talk I will present...
Tau-flavored neutrinos are, arguably, the least understood particles of the Standard Model. Given the relatively small experimental data considering them, it's natural to ask whether new physics could lie just beneath the surface of our understanding. In this talk, I will discuss how studying tau neutrinos in next-generation facilities may allow us to uncover new physics associated with...
The discovery that neutrinos oscillate was one of the first indications of physics beyond the Standard Model. That is, the addition of neutrino masses to the Standard Model requires, at minimum, three new sterile states. Furthermore, models seeking to explain the smallness of neutrino masses lead to a direct connection between observed neutrino masses and physics at very high mass scales. ...
Perturbative QCD gives a precise description of the Euclidean Adler function at large momenta. A comprehensive study of the perturbative approach is presented for momenta of the order of the tau mass, including the different expansions at all known orders. We then compare to the corresponding Adler functions obtained from experimental data and lattice simulations and comment on the...
This talk is based on the main results of the published article JHEP 04 (2022) 152. Model independent bounds on new physics are obtained using hadronic tau decays as observables. To do this, we determine the dependence of several inclusive and exclusive tau observables on the Wilson coefficients of the low-energy effective theory describing charged-current interactions between light...
The hadronic tau decay width is regarded as an important observable from which the strong coupling can be extracted precisely. However, the inconsistency in the calculations between two perturbative methods, known as FOPT and CIPT, had been a long standing problem until recently. We propose a new method to remove the renormalon divergence, which has turned out to cause the problem, by...
We discuss recent work on the methodology for determining
the strong coupling, alpha_s, from hadronic tau decays. In
particular, we address a number of concerns that have been
raised with regard to the method we employ, showing that
all of these concerns are unfounded.
Using standard mathematical methods for asymptotic series and the large-β0
approximation, we define a Minimum Distance between the Fixed-Order pertur-
bative series and the Contour-Improved perturbative series in the strong coupling
α_s for finite-energy sum rules as applied to hadronic τ decays. This distance is
similar, but not identical, to the Asymptotic Separation of Hoang and...
The tau lepton is the only one kinematically allowed to decay into hadrons and a tau neutrino. Semi-leptonic tau decays (indicated as hadronic decays) occur about the 65% of times in a combination of charged and neutral hadrons, and a tau neutrino. The remaining times, tau leptons decay into a lighter charged lepton which can be identified and reconstructed by detectors, and two neutrinos,...
In the Standard Model (SM) lepton flavour numbers are exactly conserved. The observation of neutrino oscillations, however, proves that neutrinos are massive particles and allows for Lepton Flavour Violating (LFV) processes. Nevertheless, these processes are predicted with very low branching ratios and are sensitive to new physics effects, which could manifest as an enhancement in the decay...
Detailed measurements of Higgs boson properties can be performed using its decays into fermions, providing in particular a key window into the nature of the Yukawa interactions. This talk presents the latest measurements by the ATLAS experiment of Higgs boson properties in its delays into pairs of tau leptons, using the full Run 2 pp collision dataset collected at 13 TeV. They include in...
Many theories beyond the Standard Model predict new phenomena, such as leptoquarks, vector like leptons, Z', W' bosons, KK gravitons, supersymmetry, new scalars or heavy leptons, in final states with isolated, high-pT taus. Searches for new physics with such signatures, produced either resonantly or non-resonantly, are performed using the ATLAS experiment at the LHC. The most recent 13 TeV pp...
Relativistic heavy-ion beams at the LHC are accompanied by a large flux of equivalent photons, leading to photon-induced processes. In this talk, the observation of tau-lepton pair production in ultraperipheral lead-lead collisions recorded by the ATLAS experiment at the LHC in 2018 is reported. The measurement is used to constrain the tau lepton's anomalous magnetic dipole moment.
The measurement of the anomalous magnetic moment of leptons $a_l$ provides a sensitive test of QED and allows one to test for the existence of New Physics (NP) beyond the Standard Model. Since the NP effect is expected to scale with $m_l^2$, the tauon with its heavy mass promises to be the most suitable lepton for such a test. However, due to its short lifetime, the spin precessing methods...
The search for dark matter with masses below the WIMP regime, that is, in the MeV to GeV range, has aroused a great deal of recent interest. In this mass region, accelerator experiments can explore the production dark matter down to the thermal relic limit. This talk will review the various experimental approaches, with some emphasis on LDMX (the Light Dark Matter eXperiment), a nascent...
Neutrino-nuclear interactions have been crucial from the discovery of neutrinos through the flagship neutrino oscillation experiments of today. At low energy, knowledge of weak form factors and nuclear structure are intertwined with ongoing studies of coherent elastic neutrino-nucleus scattering, and for the detection of supernova neutrinos. For high energy neutrino sources, deep inelastic...
Observation of neutrinoless double beta decay would profoundly impact our understanding of the neutrino. This lepton-number violating process requires new beyond Standard Model physics, would imply that neutrinos are Majorana particles, and provide insight into the nature of neutrino mass. It is thus a highly-sensitive and promising probe of new physics. In this talk, I will present the status...
The Deep Underground Neutrino Experiment, DUNE, is a next-generation long-baseline neutrino oscillation experiment with the main goal of precisely measuring the neutrino oscillation parameters. DUNE will employ the most intense beam of neutrinos produced at the Fermi National Accelerator Laboratory, FNAL, in Batavia, Illinois and aimed at the far detector complex located 1300km away and 1.5km...
The MicroBooNE experiment employs an 85-ton active volume liquid argon time projection chamber to detect neutrinos from both the on-axis Booster Neutrino Beam (BNB) and off-axis Neutrinos at the Main Injector (NuMI) beam. The goals of the experiment are to investigate the short baseline neutrino anomalies, to measure neutrino cross sections and to probe BSM physics with neutrino beams. In this...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment currently under construction in South China. It is located 53 kilometers away from two nuclear power plants in a 700-meter-deep underground laboratory.
JUNO will be the largest liquid scintillator (LS) detector in the world, comprising 20,000 tons of ultra-pure LS filled in a 35.4-meter-diameter...
The ICARUS T600 LArTPC detector successfully ran for three years at the underground LNGS laboratories, providing a first sensitive search for LSND-like anomalous electron neutrino appearance in the CNGS beam. After a significant overhauling at CERN, the T600 detector has been placed in its experimental hall at Fermilab, fully commissioned, and the first events observed with full detector...
Six parameters enable us to compute all neutrino oscillations in the standard three-flavor neutrino mixing paradigm. Our measurements of these parameters have been steadily improving over time. With the unprecedented precision promised by the next-generation experiments, we re-evaluate our understanding of neutrino mixing by relaxing the three-flavor assumption, i.e., testing the unitarity of...
This talk will consider a new mechanism to produce anomalous tau neutrino appearance at the near detectors of beam-focused neutrino experiments, without extending the neutrino sector. The charged mesons (π±,K±) produced and focused in the target-horn system can decay to a neutrino-philic light mediator via the helicity-unsuppressed three-body decays. Such a mediator also can be produced via...
In the simple two-generation case the probability Pμτ is not affected by interactions of neutrinos in matter. But for three generation case at baselines of the order of 9000 km matter effects become important for this channel. This is a genuine three flavour effect. We study how the presence of non-standard interactions alters the Pμτ probability at these baselines. We observe large...
We present the first fully differential predictions for tau neutrino scattering in the energy region relevant to the DUNE experiment, including all spin correlations and all tau lepton decay channels. The calculation is performed using a generic interface between the neutrino event generator Achilles and the publicly available, general-purpose collider event simulation framework Sherpa.
In this talk, we investigate the excellent potential of future tau neutrino experiments in probing non-standard interactions and secret interactions of neutrino. Due to its ability identifying tau lepton, DUNE far detector could have superior sensitivity in probing the secret neutrino interactions by observing downward-going atmospheric neutrinos, compared to the short-baseline experiments in...
The detection of high-energy astrophysical neutrinos by IceCube has opened a new window on our Universe. While IceCube has measured the flux of these neutrinos at energies up to several PeV, much remains to be discovered regarding their origin and nature. Currently, measurements are limited by the small sample size of astrophysical neutrinos and by the difficulty of discriminating between...
NOvA is a two detector, long baseline, neutrino oscillation experiment utilizing the NuMI beamline at Fermilab to study neutrino oscillations through muon (anti)neutrino disappearance and electron (anti)neutrino appearance. NOvA's primary goals are to make determinations of the neutrino mass hierarchy and the octant of ${\theta}_{23}$, and to measure possible CP violation. Along with standard...
Hyper-Kamiokande is the next generation neutrino observatory with broad physics programs: searching for leptonic CP violation in long baseline accelerator neutrino oscillations, neutrino mass ordering, potentially discovering the proton decay, observing supernova burst neutrinos, supernova relic neutrinos as well as another type of astrophysical neutrinos and solar neutrinos. It will be the...
The Pacific Ocean Neutrino Experiment (P-ONE) Collaboration is currently developing a new cubic-kilometre neutrino telescope in the Northern Pacific Ocean. With a focus on detecting TeV-PeV high-energy astrophysical neutrinos, P-ONE will expand the sky coverage of other neutrino telescopes like IceCube, KM3NeT, and Baikal-GVD. Its unique combination of water properties and detector technology...
Neutrinoless double beta decay (0νββ) is a hypothetical nuclear process which, if observed, would have far-reaching implications in particle physics. Being a lepton number violating process, the observation of 0νββ is direct evidence for physics beyond the Standard Model. In addition, it would prove that neutrinos are Majorana particles, and contribute to the determination of the neutrino mass...
The Forward Physics Facility (FPF) is a proposed program to build an underground cavern with the space and infrastructure to support a suite of far-forward experiments at the Large Hadron Collider in the High Luminosity era (HL-LHC). The Forward Liquid Argon Experiment (FLArE) is a Liquid Argon Time Projection Chamber (LArTPC)-based experiment designed to detect very high energy neutrinos and...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation neutrino experiment currently under construction. DUNE will consist of two high-resolution neutrino interaction imaging detectors exposed to the world’s most intense neutrino beam, with the Near Detector at Fermilab and the Far Detector 1,300 km away in the Sanford Underground Research Facility in South Dakota, US.
The...
Neutrinos are some of the most abundant elementary particles in our universe. They play important, even dominant, roles in many of the most extreme astrophysical phenomena, while also serving as unique messengers from the deep stellar interiors. Historically, studies of solar neutrinos gave us the first observation of physics beyond the Standard Model, while also providing an important probe...
The IceCube experiment is sensitive to tau neutrinos spanning over six orders of magnitude in energy, from atmospheric and astrophysical sources. We report on IceCube results, focusing on atmospheric tau neutrino appearance and our recent astrophysical tau neutrino detection. We also provide estimated sensitivities for future analyses, including those to be performed with the approved IceCube Upgrade.
Recent R&D work associated with upgrading the SuperKEKB e+e− collider with polarized electron beams is presented. The Chiral Belle physics program enables a set of unique precision measurements using the Belle II detector. It includes a set of measurements of $\sin^2\theta_W$ via separate left-right asymmetry ($A_{LR}$) measurements in annihilations to pairs of electrons, muons, taus, charm...
The experimental uncertainty on the anomalous magnetic moment of the muon has been significantly reduced with the recent results of the Fermilab g-2 experiment, and a further reduction is expected in the near future. The precision of the Standard Model prediction needs to improve correspondingly to increase the sensitivity of tests for physics beyond the Standard Model. The largest uncertainty...
Hadronic tau decay experiments provide an alternative determination of the Hadronic Vacuum Polarization for Muon g-2. The difference in the hadronic cross section between tau-decay and electron-positron collision must be corrected. We review our strategies for such isospin-breaking correction using first-principle Lattice QED+QCD predictions.
Processes involving charged lepton flavor violation (CLFV) are very powerful tools to search for new physics beyond the Standard Model and their observation could provide important insight onto the origin of neutrino masses. Probes of CLFV exist across a broad spectrum of energy scales, from low-energy experiments looking for CLFV decays of the muon, of the tau lepton and of a variety of...
HFLAV performs a global fit of the tau branching franctions measurements and, for several tau decay modes searches, a combination of the measured upper limits. The status and prospects of these fits are presented.
FASER, the ForwArd Search ExpeRiment, is designed to search for light, extremely weakly-interacting and long-lived beyond standard model particles at the CERN Large Hadron Collider. Such particles, e.g., dark photons, may be produced in the high-energy proton-proton collisions at the ATLAS interaction point and then decay to visible particles in FASER, which is placed 480 m downstream and...
A dedicated study of additional radiation in e+e−→μ+μ−γ and e+e−→π+π−γ initial-state-radiation events is presented using the full BABAR data sample. Results are presented at next-to- and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from Phokhara and AfkQed Monte Carlo generators is...
We present a partial-wave analysis of $\tau^- \to \pi^- \pi^- \pi^+ \nu$ decays recorded with the Belle experiment at the KEKB $e^+e^-$ collider. This work provides information on the a1(1420) and a1(1640) resonances, and aims to improve simulation studies necessary for measuring the electric and magnetic dipole moments and Michel parameters of the tau lepton.
In the Standard Model (SM), charged Lepton Flavor Violation (cLFV) is highly suppressed to a negligible level by the finite but tiny neutrino masses. The BESIII experiment is a symmetric e+e- collider operating at c.m. energy from 2.0 to 4.95 GeV and has collected the world’s largest data set of J/psi (10 Billion), psi(2S) (2.7 Billion) on production threshold, and about 25 fb^-1 scan data...
I provide an overview of neutrino physics including outstanding questions and how we hope to get answers. I will spend a little more time talking about lepton number violation and the nature of neutrinos.
Wishlist of G-2 results for Tau2025
In this talk, I will briefly review the status of tau lepton physics after Tau 2023 and provide a wishlist of topics and results that would be welcome in the field in the next years, particularly at Tau 2025.
We will give a summary of the conference highlights.
