The talk will cover the recent results on Standard Model measurements made by the CMS Collaboration, with particular emphasis on the Electroweak Sector of the theory.
The production of colored particles with large transverse momenta is almost always associated with presence of jets. The processes where three jets emerge in the final state are present in a lot of ATLAS measurements. Proper understanding and modelling of these processes is therefore crucial for today’s high energy physics.
POWHEG generator, as well as other matrix element generators, offer...
The gravitational-wave window onto the Universe has been opened with the first detection of a binary black hole in 2015. Since then, the LIGO-Virgo-KAGRA Collaboration has published 90 probable detections from three complete observing runs of the advanced-generation laser-interferometric detectors. These have enabled many new insights into the astrophysics of compact objects and the...
The groundbreaking detection of gravitational waves generated by compact binary mergers ignited the birth of gravitational wave astronomy. In less than a decade, the Earth-based network of advanced interferometers, LIGO, Virgo, and KAGRA, has transformed various scientific fields, from astrophysics and cosmology to nuclear and fundamental physics, reshaping our understanding of the...
The LHAASO collaboration has more than 280 members from 32 institutes in 5 countries. The commission of LHAASO in 2021 opened the epoch of ultra-high-energy (UHE) gamma-ray astronomy and paved the way to address the origin of cosmic rays up to hundreds of PeV. Located at Daocheng, Sichuan, on the eastern edge of the Tibetan plateau with an elevation of 4410 meters above the sea level (Figure...
The thermal phase transitions of the AdS black holes are controlled through a stochastic process and are a function of an order parameter. The dynamics during its phase transitions is determined through the fluctuating macroscopic variables, we recall the Fokker-Planck equation to study the evolution of such a process in the Born-Infeld-AdS background. Moreover, we discuss about the critical...
We start with a general introduction to the problem of neutrino electromagnetic properties [1]. Then we consider the most stringent experimental constraints on neutrino magnetic µν and electric dν moments, millicharge qν, charge radii <rν2> and anapole aν moments from the terrestrial experiments (the bounds from MUNU, TEXONO, GEMMA, Super-Kamiokande, Borexino, COHERENT, XENON1T, CONUS and the...
The latest results of the DANSS experiment are presented. DANSS is a one cubic meter highly segmented solid scintillator detector. It consists of 2500 scintillator strips, covered with gadolinium loaded reflective coating and read out with SiPMs and PMTs via wavelength shifting fibers. DANSS is placed under a 3.1 GW industrial reactor at the Kalinin NPP (Russia) on a movable platform. The...
In this work we derive limits on the WIMP-nucleon scattering cross-section by comparing the potential heat flow within the Earth from Dark Matter capture and subsequent annihilation to the observational value. This effect has been argued previously in the literature to provide a potential link to mass extinction phenomena on Earth. However, we focus on whether additional heat-flux from dark...
Darkside-20k, an underground dark matter search experiment located at
LNGS (Italy), aims to achieve a total exposure of 200 tonne-years
devoid of instrumental backgrounds. At its core is a dual-phase Time
Projection Chamber (TPC) containing 50 tonnes of low-radioactivity
liquid argon. Surrounding the entire TPC wall is a gadolinium-loaded
acrylic material, serving as a neutron veto. This...
Since the beginning of its full operation in 2011, the IceCube Neutrino Observatory at the South Pole station, has pioneered many discoveries in neutrino astronomy, cosmic ray physics, and particle physics. This talk will present the experiment, and highlight recent discoveries, such as the evidence for neutrino emission from the active galactic nucleus NGC 1068, the first observation of...
The KM3NeT collaboration is constructing two last-generation underwater neutrino telescopes in two abyssal sites of the Mediterranean Sea. The scientific goal is to complement the IceCube sky coverage, instrumenting a comparable detection volume and improving the reconstruction accuracy.
Each telescope is a Cherenkov detector built with the same technologies but with a different geometrical...
Neutrino experiments based on water-Cherenkov detectors have made significant contributions
to our understanding of neutrino physics, but they face challenges in accurately modeling
detector systematic parameters due to their large size and the smallness of the cross-section
for weak interactions. While these experiments have achieved remarkable successes in the
past, the future era of...
SBND is a 112-ton liquid argon time projection chamber located on the Booster Neutrino Beam at Fermi National Accelerator Laboratory, and is the near detector of the Short-Baseline Neutrino program. The primary goals of SBND are to provide flux constraints for sterile neutrino searches, conduct world-leading neutrino cross-section measurements on argon, and perform beyond the Standard Model...
The ANTARES detector is an underwater Cherenkov neutrino telescope. Its construction was completed in 2008 and it operated for sixteen years in the Mediterranean Sea. Even though optimised for the search for cosmic neutrinos, this telescope is also sensitive to exotic particles like magnetic monopoles and nuclearites (massive nuggets of strange quark matter). We discuss here the possible...
We discuss as accurately as possible the cross section of quasi-elastic scattering of electron (anti-)neutrinos on nucleons, also known as inverse beta decay in the case of antineutrinos. We focus on the moderate energy range from a few MeV up to hundreds of MeV, which includes neutrinos from reactors and supernovae. We assess the uncertainty on the cross section, which is relevant to...
The experimental and theoretical research on the physics of massive neutrinos is based on the standard paradigm of three-neutrino (3ν) mixing, which describes the oscillations of neutrino flavors measured in solar, atmospheric and long-baseline experiments. However, several anomalies are short baseline oscillation data, corresponding to an L/E of about 1m/MeV could be interpreted by involving...
The SND@LHC experiment at the Large Hadron Collider is a new neutrino scattering experiment, that got approved and installed in 2021.
We report the direct observation of muon neutrino interactions with the SND@LHC detector using a dataset of proton-proton collisions at 13.6 TeV collected in 2022 and corresponding to an integrated luminosity of 36.8 fb−1. The search is based on information...
The Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider has been collecting the world’s highest-intensity collisions at the $\Upsilon$(4S) since 2019. A data set comparable in size to that of predecessor experiments, Belle, and collected with the new detector, enables unique or world-leading results. Examples include indirect searches for non-standard-model...
Production of muons from heavy-flavour hadron decays in pp collisions at √s = 13 TeV with the ALICE detector
Tebogo Joyce Shaba on behalf of the ALICE Collaboration
North-West University, South Africa
iThemba LABs, Cape Town, South Africa
Heavy quarks (charm and beauty) are produced in early stages of the hadronic collision via hard-parton scatterings. In ALICE,...
Cross section measurements are key to the ALICE physics program and require precise luminosity determination. In ALICE, the luminosity determination relies on visible cross sections measured in dedicated calibration experiments, the van der Meer scans. For the LHC Run 2 data samples, ALICE measured the luminosity with an uncertainty better than 2% for pp collisions and 3% for Pb-Pb collisions....
ICTP Physics Without Frontiers (PWF) works to motivate, train, and educate physics and mathematics university students worldwide, with focus on science and technology lagging countries, to help build the next generation of scientists.
PWF organises projects working with volunteer scientists, who are PhD students, postdoctoral researchers, or lecturers from all over the world, who are...
The Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) is not only a groundbreaking scientific facility but also a hub for international collaboration and knowledge exchange. Outreach, inspiration and education are some of the pilar missions of CERN, the LHC experiments are therefore committed to promoting global diversity and ensuring equitable access to...
The European research funding landscape offers several options for individual applicants. In particular, the most prestigious postdoc fellowship on the continent, the Marie Skłodowska-Curie programme, is open also to overseas applicants. I will share some experiences of how to successfully apply for this scheme, along with pointers to other more advanced grants (ERC). Very similar schemes are...
Nuclear material is nowadays widely used in many fields, such as health, environment, agriculture, and industry. Besides its use for public utility, there is also the possibility that nuclear materials could be used for illicit purposes. For this reason, it is important that not only expert personnel, but also technicians and, as much as possible, common people, starting from high-level...
Bertin Technologies is an industrial group that develops high-performance instrumentation for critical
or scientific applications, such as defense & security, nuclear & health physics, and space.
The SaphyRAD product line is composed of a wide range of probes dedicated to the detection of all
types of particles (alpha, beta, neutron, and gamma). The latest developed probe is a...
A search for non-resonant Higgs boson pair (𝐻𝐻) production is presented, in which one of the Higgs bosons decays to a b-quark pair (𝑏̄𝑏) and the other decays to 𝑊𝑊∗, or 𝑍𝑍∗, or 𝜏+𝜏− , with in each case a final state with 𝑙𝑙 + neutrinos (𝑙 = 𝑒, 𝜇). Both gluon-gluon fusion and vector boson fusion are considered as production modes. Data recorded by the ATLAS detector in proton-proton collisions...
The axion particle discovery could answer the big CP problem as it is hypothetically predicted. Hence A study on the exotic decay of the Higgs boson to two Axion Like Particles (ALPs), which in turn decay to two photons, was carried out. This analysis covers the mass range of ALPs between 100 MeV and 60 GeV and ALPs-photon couplings C$_{a\gamma\gamma}$ of 10$^{-5}$ to 1, a region that includes...
First Physics Results from the FASER Experiment with LHC Run 3 Data
-on behalf of the FASER Collaboration
FASER, an experiment at the LHC, was designed to explore the existence of light, weakly interacting particles that are generated in proton-proton collisions at the ATLAS interaction point and travel in the far-forward direction. The initial data analysis focused on two searches:...
We suggest an explanation for and explore the consequences of the excess around 95 GeV in the di-photon and di-tau invariant mass distributions recently reported by the CMS collaboration at the Large Hadron Collider (LHC), together with the discrepancy that has long been observed at the Large Electron-Positron (LEP) collider in the $b\bar b$ invariant mass. Interestingly, the most recent...
In search of beyond standard model, several hints of the presence of a new state at about 95 GeV have recently been observed by both the ATLAS and CMS collaborations based on their full Run 2 data sets. This result becomes particularly intriguing when considering another excess reported by CMS in the di-tau final state at a comparable mass, which exhibits a similar local significance....
Gravitons are hypothetical particles that have yet to be directly observed, but they are predicted by various theories, including quantum gravity. One quantum mechanical process that allows for the production of particles that couple to photons, such as gravitons, is light-by-light scattering. While rare, this process can be observed and is sensitive to potential new physics beyond the...
We study the one-loop prediction for the single production of the Standard Model (SM) Higgs boson ($h_1$) in association with a photon in electron-positron collision in the context of the Two Higgs Doublet Type II seesaw Model (THDMcT). This type of process is directly sensitive to one-loop impacts because it has no amplitude at the tree level. The cross section in the standard model (SM) is...
The Cherenkov Telescope Array Observatory is the next generation ground-based telescope array to study very-high-energy electromagnetic radiation from the Universe. CTA will open a new era in this energy domain with its superior performance with respect to the current generation. In this talk, I will present the most important aspects of the very wide science case of CTA and I'll review...
The Deep Underground Neutrino Experiment (DUNE) aims to precisely measure the long baseline neutrino oscillation parameters, for a definitive determination of the neutrino mass ordering and for searching for charge-parity violation in the leptonic sector.
DUNE will utilize the most intense, wide spectrum muon neutrino/anti-neutrino beam, produced at Fermilab, and a 70 kton liquid Argon Time...
Understanding the properties of nuclear matter and its emergence through the underlying partonic structure and dynamics of quarks and gluons requires a new experimental facility in hadronic physics known as the Electron-Ion Collider (EIC). The EIC will address some of the most profound questions concerning the emergence of nuclear properties by precisely imaging gluons and quarks inside...
The discovery of the Higgs boson marked the beginning of a new era in HEP. Precision measurement of the Higgs boson properties and exploring new physics beyond the Standard Model using Higgs as a tool become a natural next step beyond the LHC and HL-LHC. Among the proposed Higgs factories worldwide, the Circular Electron Positron Collider (CEPC) is proposed by the Chinese HEP community and to...
The proposed Compact Linear Collider (CLIC) will provide electron-positron collisions with centre-of-mass energy operation in three stages from a few hundred GeV up to 3 TeV. This offers a rich precision physics program combined with high sensitivity to a wide range of possible new phenomena. The precision required for such measurements and the specific conditions imposed by the beam bunch...
The Compact Linear Collider (CLIC) is a proposed TeV-scale linear electron-positron collider based on a novel two-beam acceleration technique. With its high luminosity and a broad energy range, from 380 GeV to 3 TeV, CLIC presents a mature option for a future Higgs factory and discovery machine. Detailed studies of the CLIC physics potential based on a dedicated detector concept, CLICdet,...
Establishing a deep underground physics laboratory to study, amongst others, double beta decay, geoneutrinos, reactor neutrinos and dark matter has been discussed for more than a decade within the austral African physicists’ community. PAUL, Paarl Africa Underground Laboratory, is foreseen as an open international laboratory,inside the Huguenot Tunnel, which is located between the towns of...
The near detector of T2K (ND280) is undergoing a major upgrade. A new scintillator tracker, named superFGD, with fine granularity and 3D-reconstruction capabilities has been assembled at J-PARC. The new Time Projection Chambers are under construction, based on the innovative resistive Micromegas technology and a field cage made of extremely thin composite walls. New scintillator panels with...
The upcoming Hyper-Kamiokande experiment is the third generation of water Cherenkov detector situated in Kamioka, Japan, following in the footsteps of the highly successful Kamiokande and Super-Kamiokande experiments. Hyper-Kamiokande will serve as the far detector for a long-baseline neutrino experiment utilising the neutrino beam from J-PARC, with the primary purpose being the measurement of...
The first stage of the Future Circular Collider (FCC) will be an e+e- collider (FCC-ee) as successor to the Large Hadron Collider at CERN. The FCC-ee will enable a precise characterization of the Higgs boson together with electroweak, flavour, QCD, top precision physics, as well as searches beyond the Standard Model, with a real chance of discovery. Reaching experimental and theoretical...
The LHCb experiment is the dedicated flavour physics experiment at the LHC and is planning its second major upgrade during Long Shutdown 4 in the early 2030s to increase its instantaneous luminosity by about one order of magnitude. At the heart of this will be a new Vertex Locator, which will continue to provide precise spatial resolution for particles produced in the proton-proton collision...
The ATLAS detector, a state-of-the-art particle detector, is uniquely situated
100 meters below the earth’s surface in the tunnel of the Large Hadron
Collider (LHC), extends 44 meters in length and 25 meters in height with an
estimated mass of 7000 tons, and provides 4π coverage in solid angle due to
its symmetric cylindrical design.
By 2029, the luminosity is expected to increase...
The increase of the particle flux (pile-up) at the HL-LHC with instantaneous luminosities up to L ≃ 7.5 × 10$^{34}$ cm$^{−2}$s$^{−1}$ will have a severe impact on the ATLAS detector reconstruction and trigger performance. The end-cap and forward region where the liquid Argon calorimeter has coarser granularity and the inner tracker has poorer momentum resolution will be particularly affected....
This talk presents an overview of the recent results from the LHCb experiment: CP violation and mixing in charm and beauty measurements, lepton flavour universality tests and lepton flavor violation, spectroscopy, electroweak measurements and searches for new physics.
The Muon g-2 endures as one of the most stringent tests of the Standard Model (SM). The recent combined result from Run 2 and Run 3 of the Muon g-2 Experiment at Fermilab confirms both the Run-1 Fermilab and Brookhaven measurements of the Muon g-2 with an overall unprecedented precision of 190 parts-per-billion, and it has already surpassed the overall target for its systematic uncertainty....
The BESIII experiment, which is operated at the BEPCII electron-positron collider in Beijing since 2009, has collected world leading high statistic data samples in the tau-charm energy region. This offers unique possibilities to study exotic QCD states in the charmonium sector, but also the light meson spectrum which can be accessed via charmonium decays. The talk will discuss recent studies...
The large top quark samples collected with the ATLAS experiment at the LHC have yielded measurements of the production cross section of unprecedented precision and in new kinematic regimes. They have also enabled new measurements of top quark properties that were previously inaccessible, enabled the observation of many rare top quark production processes predicted by the Standard Model and...
Recent highlights and future plans with ALICE at the LHC
Marielle Chartier$^1$ for the ALICE Collaboration
$^1$University of Liverpool, Oliver Lodge Laboratory, United Kingdom
ALICE (A Large Ion Collider Experiment) is one the four large experiments at the CERN Large Hadron Collider (LHC), whose research programme aims at an understanding of the phase equilibria of hadronic matter...
The ALICE detector at the LHC is dedicated to the study of the properties of the hot and dense QCD matter (quark-gluon plasma) produced in nucleus-nucleus collisions at ultra-relativistic energies. The heavy flavor (charm and beauty) quarks, having large masses, are produced in hard-parton scatterings at the early stages of the collisions. Their measurements in pp collisions are an important...
The Majorana nature of the neutrino, i.e., whether it is its own antiparticle, remains an open problem in modern physics. The observation of Neutrinoless Double Beta Decay (0$\nu\beta\beta$), a hypothesized beyond Standard Model process, would conclusively establish the Majorana nature of neutrinos. It would also demonstrate lepton number violation and could provide insight into the absolute...
We discuss a new experiment based on the proposal [1] to observe for the first time the coherent elastic neutrino-atom scattering (CEνAS), using electron antineutrinos from tritium decay and a liquid He-4 target, and also to search neutrino electromagnetic properties [2], including the neutrino magnetic moment. The experiment is under preparation within the research program of the National...
The ICARUS collaboration has employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratory, performing a sensitive search for LSND-like anomalous $\nu_e$ appearance in the CERN Neutrino to Gran Sasso beam, which contributed to the constraints on the allowed neutrino oscillation parameters to a narrow region around 1 eV$^2$. After a significant...
The Short-Baseline Near Detector (SBND) will be one of three Liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is anticipated to begin operation later this year. SBND is characterized by superb imaging capabilities and will record over a...
Precise knowledge of how neutrinos interact with matter is essential for measuring neutrino oscillations in long-baseline experiments. At the T2K experiment, the near detector complex measures neutrino interactions to constrain cross section models for oscillation studies and characterises the beam flux. In addition, the near detector complex provides a separate platform for performing...
The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino oscillation experiment currently in construction and expected to take data in late 2020s. In order to explore a wide range of physics, from precise measurements of the neutrino oscillation parameters to proton decay and supernova neutrino detection, it will comprise a far detector complex located in the Sanford...
Searches for new physics are conducted in different experimental conditions, e.g. at high energy colliders or with high intensity particle beams. The Deep Underground Neutrino Experiment (DUNE) will be a powerful tool for the study of a variety of physics topics, due to its high-intensity proton beams that provide large neutrino fluxes, and which are sampled by a near detector system...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment currently under construction in southern China.
The detector consists of a 35.4 m diameter acrylic sphere filled with 20 kton of ultra-pure liquid scintillator and makes JUNO the largest LS-based, underground neutrino observatory capable of addressing many important topics in different fields of...
Core-collapse supernovae (CCSNe) play a significant role in our understanding of the Universe's dynamics. The time profile of neutrinos emitted during these supernovae offers valuable insights into the mechanism behind collapsing stars and the behavior of particles in extremely dense environments. The detection of neutrinos from the SN1987A supernova in the Large Magellanic Cloud marked a...
We present the results from the analysis of the down-going flux of nuclearites, based on data collected over a period of nine years (2009 to 2017) using the ANTARES neutrinos telescope. The results exhibit a remarkable enhancement compared to previously reported results. Notably, they represent the pioneering observation made by a neutrino telescope regarding nuclearites, setting the most...
In this contribution we continue our studies [1,2] of neutrino oscillations in a magnetic field. We consider neutrino flavour and spin oscillations in a magnetic field within the formalism of wave packets. Decoherence effects due to the wave packets separation are studied. The coherence lengths for oscillations on both vacuum $\omega^{vac}_{ij} = \Delta m^2_{ij}/4E_\nu$ and magnetic...
It is well-known that dense matter can strongly affect the neutrino moving through it. It has been recently realized that transversal matter motion can substantially change neutrino dynamics in some astrophysical settings and, in particular, leads to the appearance of spin oscillations (see [1] and references therein). In this work we investigate neutrino quantum sates in transversally moving...
The entropy of von-Neumann can be computed directly by describing the density matrix of the associated system. For black holes however, it is rather difficult to evaluate this entropy because before all else we must have a quantum formulation of this gravitational system. We outline the derivation of a gravitational fine-grained entropy using a quantum extremal surface that extremizes the...
[Abstract pdf file attachement][1]
In this work, we study a model of holographic dark energy using FLRW cosmology in the context of modified gravity. An extension of the symmetric teleparallel gravity is obtained by considering the gravitational action $L$ is given by an arbitrary function $f$ of the non-metricity $Q$, where the nonmetricity Q is responsible for the gravitational interaction,...
An overview of recent results from the CMS experiment will be presented along with the preparation and upgrade of the CMS experiment for the HL-LHC.
Motivated by the recent search for bbτ τ final state conducted by the CMS experiment, we would like to address the study of signal and background for such a final state within the so-called 2HDM Type-I. We investigate the scope of the LHC in accessing the process gg → H → hh → b b τ τ by performing a Monte Carlo (MC) analysis aimed at extracting this signal from the SM backgrounds, in the...
Future e$^+$e$^-$ colliders, thanks to their clean environment and triggerless operation, offer a unique opportunity to search for long-lived particles (LLPs) at sub-TeV energies. Considered in this contribution are promissing prospects for LLP searches offered by the International Large Detector (ILD), with a Time Projection Chamber (TPC) as the core of its tracking systems, providing almost...
Following the recent update measurement of the W boson mass performed by the CDF-II experiment at Fermilab which indicates 7σ deviation from the SM prediction. As a consequence, the open question is whether there are extensions of the SM that can carry such a remarkable deviation or what phenomenological repercussions this has. In this paper, we investigate what the theoretical constraints...
While experimental data has not ruled out the possibility of additional Higgs bosons or gauge sectors, several alternative models have been proposed to go beyond the standard model and tackle the question of hierarchy. These models predict the existence of heavy vector-like partner quarks that exhibit vector-axial (V-A) coupling, typically on the TeV scale. In this work, we use simplified...
In light of the recent deviation in the W boson mass measurement from the CDF-II, which significantly strays from the Standard Model (SM) prediction, our paper explores the implications of this within the framework of the Two-Higgs Doublet Model (2HDM). We focus on the scenario where the heavy CP-even H is recognized as the Higgs boson observed at 125 GeV.
Our analysis, which incorporates...
Most of the current experimental searches for charged Higgs bosons at the Large Hadron Collider (LHC) concentrate upon the $tb$ and $\tau\nu$ decay channels. In this study, we analyze the feasibility of the bosonic decay channel $W^{\pm (*)} h$ instead, with the charged gauge boson being either on-shell or off-shell and $h$ being a neutral light Higgs boson. Focusing on the Two-Higgs Doublet...
The aim of this study is to examine the impact of the Z+photon and Di-photon signal strength measurements, $\mu_{\gamma\gamma}$ and $u_{\gamma Z}$, on the allowed parameter space of the Inert Doublet Model (IDM). Specifically, we focus on the effect of these measurements on the second doublet mass $\mu_2^2$, and also their compatibility with the most recent constraint from the XENON1T...
