The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay (0νββ) that has been able to reach the one-ton scale. The detector consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. The construction of the experiment was completed in August 2016 with the installation...
We investigate the pair production of right-handed neutrinos from the decay of the additional neutral gauge boson Z′ at a gauged B − L model. Analysing such signal can be recasted from dark photon searches with a corresponding factor of its coupling g′, this gives a upper bound for g′ to be 10−4 for mZ′ under 10 GeV and $10^{−3}$ for mZ′ beyond 10 GeV. As the heavy neutrinos can be longlived...
Leptonic and semi-leptonic $D$ decays at BESIII contribute the most precise experimental measurement of $|V_{cs(d)}|$ and form factor $f_{D_{(s)}}$ in the world based on 2.93 fb$^{-1}$ and 3.19 fb$^{-1}$ data taken at center-of-mass energies $\sqrt{s} = 3.773$ and 4.180~GeV, respectively. The largest samples at the mass threshold of the charmed hadrons $D_{(s)}$ also provide chances to...
In recent years, many hadronic states with heavy quarks have been observed which do not fit into the quark model scheme. Investigation of the nature and properties of such exotic states is an important task for the phenomenology of strong interactions. Most intriguing are charged states which at the same time contain a heavy quark-antiquark pair, since their minimal quark contents is...
Until recently, parameters of vector charmonia lying above the open-charm threshold were determined from the inclusive cross section of the electron-positron annihilation to hadronic final states. However, the parameters of the resonances obtained this way are model-dependent and they suffer from large uncertainties. On the other hand, measurements of exclusive cross sections of the e^+e^-...
We investigate the phenomenology of a simplified model with a Majorana fermion as dark matter candidate which interacts with Standard Model quarks via a colour-charged coannihilation partner. Recently it has been realized that non-perturbative dynamics, including the Sommerfeld effect, bound state formation/dissociation and thermal corrections, play an important role in coannihilations with...
Many extensions of the Standard Model, motivated by recent astrophysical observations, include the possibility of a new type of weak-interacting degrees of freedom. The typical models include the Next-to-Minimal Supersymmetric Standard Model and Light Hidden Dark-sector model that predict the low-mass Higgs and dark bosons, respectively. The masses of these particles are expected to be a few...
I will review the latest constraints on SUSY models from the GAMBIT global fitting collaboration, with a focus on combined collider constraints on neutralinos and charginos. Several tantalising excesses are observed in these searches, and I will discuss their combined statistical significance and possible new physics interpretation.
Most direct WIMP searches have located their experimental setup under a large rock overburden in order to drastically reduce the backgrounds caused by cosmic-ray interactions. The absence of signal in current searches had led to revisit of the assumption that the WIMP-nucleon cross section is necessarily low enough to justify to neglect a possible attenuation of the WIMP flux as it passes...
Light dark particles coupled to the electromagnetic current via higher-dimensional operators can be produced and searched for in various experiments and astrophysics. The talk will discuss relevant intensity frontier experiments with electron beams, as well as astrophysical and cosmological observations. The combination of all considered probes lead to stringent constraints on the...
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more than its predecessor. With this data set, Belle II will be able to...
The Inert Doublet Model (IDM) is one of the simplest extensions of the Standard Model (SM), providing a dark matter candidate. It is a two Higgs doublet model with a discrete $Z_2$ symmetry, that prevents the scalars of the second doublet (inert scalars) from coupling to the SM fermions and makes the lightest of them stable. We study a large statistics of IDM scenarios, which are consistent...
Having enabled discoveries of Standard Model resonances in previous decades, the dilepton invariant mass spectrum remains a vital experimental probe of today’s high energy frontier. Multiple benchmark scenarios beyond the Standard Model anticipate high-mass neutral mediators with clean signatures in dilepton final states at the Large Hadron Collider. In my talk I report findings from the...
Higgs particles in the adjoint representation of a non-Abelian gauge theory play an important role in many scenarios beyond the standard model, especially grand-unified theories, partial compositness models, and (broken) supersymmetric theories. However, recently new analytic results based on gauge-invariant perturbation theory have arisen, which require a reevaluation of the observable,...
The XENON1T experiment searches for weakly interacting massive particles (WIMPs) with a dual-phase xenon time projection chamber (TPC). The latest results come from 278.8 days of collected data in an inner fiducial volume of 1.3 tonnes, corresponding to a $\sim$1 tonne-year of exposure. The main aspects of the experiment and the analysis that led to the best 90% exclusion limit on the...
During the ongoing LHC long shutdown 2, in 2019/2020,
the LHCb collaboration is performing a major upgrade of the experiment.
The upgraded detector is designed to operate at a five times higher instantaneous
luminosity than in Run II and it can be read out at the full bunch-crossing
frequency of the LHC, abolishing the need for a hardware trigger. This
talk will present an overview of the...
The Compact Linear Collider (CLIC) is a proposed TeV-scale high-luminosity electron-positron collider. For an optimal exploitation of its physics potential, CLIC is foreseen to be built and operated in three stages, with centre-of-mass energies ranging from 380 GeV up to 3 TeV. Electron beam polarisation is provided at all energies. The initial energy stage will focus on precision measurements...
With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon, $a_\mu=(g-2)_\mu/2$, at the level of $3$--$4\sigma$, it is natural to ask if there could be a sizable effect in the electric dipole moment (EDM) $d_\mu$ as well. In this context it has often been argued that in UV complete models the electron EDM, which is very...
In this talk we address expected measurement accuracy of the Standard Model Higgs boson decay into two photons at 3 TeV Compact Linear Collider (CLIC). This process is induced via loop exchange of heavy particles either from the Standard Model (SM) or beyond, modifying the SM expectations in the latter case. The study is performed using a full simulation of the CLIC_ILD detector model,...
Measurements of electroweak boson pair scattering and inclusive production at the LHC constitute a stringent test of the electroweak sector and provide model-independent means to search for new physics at the TeV scale. They allow to test the gauge structure of the Standard Model.
In this talk, we present recent results on vector-boson scattering from the ATLAS experiment using proton-proton...
Abstract: Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarizes recent ATLAS results for searches for supersymmetric (SUSY) particles. Weak and strong production in both R-Parity conserving and R-Parity violating SUSY scenarios are considered. The searches use the full Run 2 dataset...
Most SUSY searches at the LHC are optimised for the MSSM, where gauginos are Majorana particles. By introducing Dirac gauginos, we obtain an enriched phenomenology, from which considerable differences in the LHC signatures and limits are expected as compared to the MSSM. Concretely, in the minimal Dirac gaugino model (MDGSSM) we have six neutralino and three chargino states. Moreover,...
The NA62 experiment at CERN SPS is designed to measure BR(K+ -> pi+ nu nu) with 10% accuracy. The high-intensity setup, trigger system flexibility and detector performance make NA62 particularly suitable to search for physics beyond the Standard Model with kaon decays and to perform direct searches for long-lived hidden-sector particles, such as dark photons, dark scalars, axion-like...
I will present the latest analyses of non-supersymmetric models from the GAMBIT global fitting project, covering axions, axion-like particles and scalar, vector and fermionic Higgs portal models stabilised by either a $\mathbb{Z}_2$ or $\mathbb{Z}_3$ discrete symmetry. These results incorporate various combinations of constraints from the LHC, direct and indirect searches for dark matter,...
In MSSM scenarios characterised by large tan(beta), bottom-Yukawa-induced processes, such as Higgs decays into bottom pairs and Higgs bremsstrahlung off bottom quarks, play a major role at present and future colliders. Therefore, radiative corrections to the bottom Yukawa coupling are of extreme importance. Currently they are known in a resummed form at the NNLO level. The resummed result can...
Constraining physics beyond the Standard Model through theoretical constraints is highly relevant to increase the predictivity of the models for collider searches. Constraints from the stability of the electroweak vacuum are especially important in models with large scalar sectors, such as SUSY models. We developed a highly efficient and numerically reliable approach that enables the...
Measurements of the properties of the top quark can serve as stringent tests of the standard model (SM). To date, all the measurements of its pair and single production cross sections and properties indicate that it is indeed the top quark as predicted by the SM. However, moderate deviations from this expectation still cannot be ruled out. The spin density matrix of top quark pair production...
The matter content of a gauge theory is tuned such that one is close to the conformal window, but still in the confining and chiral-symmetry-breaking regime. Properties of mesonic-type bound states are discussed. Preliminary results for the spectrum of such a theory are presented.
