The talk will cover an exploration on the dilepton plus missing transverse energy (MET) signature from LHC run-III to search for two-component scalar Dark Matter (DM). The model discussed in this work is a 3-Higgs Doublet Model (3HDM) where two of the doublets are inert from the Standard Model (SM) and the other one is active and also the SM Higgs doublet, hence an I(2+1)HDM. Each inert sector...
A phenomenological Lagrangian for the interaction between a pseudo-scalar (axion-like) field and massive fermions is constructed and its statistical properties are discussed. For a gas comprised of neutrons which interact with axions we compute the equation of state, where causality and thermal equilibrium are explored. Numerical solution of the Tolman-Oppenheimer-Volkoff equations present the...
QUEST-DMC (QUantum Enhanced Superfluid Technologies for Dark Matter and Cosmology) uses a superfluid helium-3 target cooled to 140 $\mu$K to search for eV-keV scale recoil energies from interactions with sub-GeV mass dark matter candidates. As the target volume of a QUEST bolometer is extremely small (<1cm$^3$) it is CPU intensive to produce high statistics simulations of background...
Next-generation neutrino detectors will require new simulation and reconstruction software. For water and scintillator-based neutrino detectors, RATPAC is a leading simulation framework. The latest release, RATPAC-two, brings several enhancements over the original version, improving both the usability and collaboration potential between experiments. With the 30-tonne BUTTON experiment at...
There is a long-standing discrepancy between theory and experiment in the evaluation of the muon g-2. The leading order hadronic contribution to the muon anomalous magnetic moment, aµHLO is the highest source of uncertainty in this evaluation. The MUonE experiment aims to measure aµHLO with high precision using a novel approach. The MUonE experiment will take place in CERN’s North area, using...
DarkSide-20k is a direct detection dark matter search experiment that will search for dark matter candidates with masses from the keV to Plank scale. The detection signature is scintillation produced by energy deposition in a 51-tonne dual-phase liquid Argon time projection chamber (TPC) and surrounding veto region. Argon scintillation is detected by 27 m2 of novel low-noise cryogenic silicon...
Initial matter density perturbations during the primordial era are set in motion by inflation, subsequently dictating the formation and evolution of the large-scale structure of the universe. In this research, we explored primordial non-Gaussianity in large scale structures of the universe at redshifts z = 1.0 and z = 1.5, focusing on the improvements the new and upcoming Euclid and SKA...
The observation of neutrino oscillations provides proof of non-zero neutrino masses. However, these same neutrino oscillation experiments do not provide information on the absolute scale of these masses, which remain unknown. The neutrino masses may be accessed via measurement of the shape of the tritium beta-decay energy spectrum with a particularly sensitive technique known as Cyclotron...
Rare event searches, such as those for dark matter and neutrinoless double beta decay, require increasingly sensitive detectors. A critical aspect of this is the reduction of backgrounds in the detector material.
High-grade copper is an attractive choice for detector materials, due to its commercial availability and lack of long-lived radioisotopes, the longest being 67Cu with a half-life...
nuSTORM (neutrinos from STORed Muons) is a future generation accelerator-based neutrino experiment that is currently in the planning stage. The aim of this project is to study neutrino-nucleus interactions and neutrino cross-sections with high precision, which is required for more precise oscillation measurements at long baseline experiments. Uniquely, it can make high-statistical measurements...
The success of current axion experiments depends critically on overcoming technical challenges related to instrumentation. My work focuses on two key areas: first, the development of an intermediate receiver chain for the Quantum Sensors for the Hidden Sector (QSHS) project; and second, the implementation of a Data Acquisition System, which incorporates a second heterodyning stage using...
Scalar-tensor theories of gravity are a class of modified gravity theories that offer an alternative to Einstein’s general theory of relativity. The main aim of these theories is to address long-standing challenges of modern physics, such as the nature of dark matter and the origin of the accelerated expansion of the Universe. The latter of these problems can be addressed by the so-called...
The poster presents a review of the light injection (LI) system, a critical calibration tool for the upcoming Hyper-Kamiokande (Hyper-K) experiment, a next-generation Water Cherenkov detector designed to study neutrino properties with unprecedented precision. Neutrino oscillations, charge-parity (CP) violation, and proton decay searches are among the key physics goals of Hyper-K, making...
The proposed AN Underground Belayed In-Shaft (ANUBIS) experiment aims to search for long-lived particles (LLPs) within CERN's ATLAS underground cavern as a valuable addition to the LLP program at CERN. Recent efforts to realise the ANUBIS experiment include the installation and commissioning of a prototype detector, proANUBIS, which has been collecting LHC collision data since 2024. This data...
The Quantum Enhanced Superfluid Technologies for Dark Matter and Cosmology (QUEST-DMC) experiment aims to search for sub-GeV dark matter with a quantum-amplified superfluid 3He calorimeter. Cosmic rays and radiogenic backgrounds are expected to be dominant backgrounds in the region of interest, between eV to keV scale recoil energies, for a dark matter search. Characterising these backgrounds...
The FCC-ee is the proposed first phase of a next generation particle collider the Future Circular Collider with the first phase having electrons and positrons collided. The analysis shows the expected sensitivity, using statistical errors only, to the branching fraction of Higgs to invisible decay for the ZH process at the e+e− Future Circular Collider running at centre-of-mass energies of √s...
A summary of the analysis of the measurement of the electric dipole moment of the muon at the fermilab g-2 experiment, which was done using 25% of the total dataset. The sensitivity of the future measurement, using the full statistics, and an optimal weighting method, will be shown.
This poster presents a study on the tau ($\tau$) identification efficiency in $t\bar{t} \rightarrow \ell\tau_{\text{had}} \nu\bar{\nu} b\bar{b}$ events, using 29 fb$^{-1}$ of proton-proton collision data at $\sqrt{s} = 13.6$ TeV, recorded by the ATLAS detector during LHC Run-3. A tag-and-probe method is applied to measure the efficiency of the RNN-based tau-ID algorithm, focusing on...
The Missing Transverse Energy (MET) is a variable that is used to quantify the energy (or transverse momentum) that is not reconstructed by the ATLAS detector. In recent years, an ML-approach to estimate the MET has been developed in ATLAS, called METNet, which uses a Neural Network to combine the Working Points used to reconstruct the MET into a new WP.
In this contribution, we present an...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20-kiloton underground
liquid scintillator detector located in Guangdong, China, which is currently filling in the
liquid scintillator. JUNO's primary physics goal is to determine the neutrino mass
hierarchy with high precision. Additionally, it is designed to detect a wide range of
neutrino interactions, covering an energy...
The measurement of the muon anomalous magnetic moment (g−2) exhibits a significant discrepancy with the Standard Model. The dominant theoretical uncertainty arises from the leading-order hadronic contribution a_µ^HLO, evaluated using data-driven approaches based on e+e− to hadron cross-section data, or recent lattice QCD results. However, tensions within these methods complicate the comparison...
Radon emanation from materials presents a major background to rare event experiments. This poster will present the dual-detector radon emanation system operating at Boulby Underground Laboratory, which uses two 80L electrostatic alpha detectors. By incorporating a radon concentration line, this will enhance its sensitivity to 222Rn to below 0.1 mBq, providing more accuracy at characterising...
Darkside-20k is a dual-phase liquid argon time projection chamber designed to search for dark matter interactions. Interactions in the argon are observed using silicon-photomultiplier (SiPM) array detectors, composed of SiPMs assembled onto a printed circuit board to form a vTile. During production, the vTiles undergo quality assurance and quality control (QA/QC) testing at ambient and...
The QUEST-DMC experiment utilises surface-based superfluid helium-3 bolometers to search for sub-GeV dark matter with low energy thresholds. This talk outlines the impact of the dark matter stopping effect on QUEST-DMC’s projected sensitivity for both spin-dependent and spin-independent interactions. Our analysis employs two complementary strategies: (i) a straight-line path for dark matter...
The SNO+ Experiment is a versatile liquid scintillator neutrino detector situated at SNOLAB, with the primary goal of searching for neutrinoless double beta decay. In addition to ongoing measurements of reactor antineutrinos, solar neutrinos, geoneutrinos, supernova neutrinos, and other exotic phenomena, the SNO+ experiment is now preparing for an upcoming phase capable of neutrinoless double...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment located in Guangdong Province, China, featuring a 20-kton liquid scintillator (LS) detector. Its excellent energy resolution, large detector volume, and exceptional background control provide a unique opportunity to explore key topics in neutrino and astroparticle physics. JUNO’s primary objectives are...
The Spherical Proportional Counter, a novel gaseous detector, has been employed in direct, light-particle dark matter searches thanks to its radiopure material construction, single-electron energy threshold, and ability to operate with low-mass nuclie gases. The detector consists of a grounded spherical shell filled with gas and a central readout anode. Gases containing low-mass nuclei such as...
Belle II is a particle detector operating at the SuperKEKB accelerator located in KEK (High Energy Particle Research Organization) in Tsukuba, Japan. The facility collides electrons and positrons at centre of mass energy close to $\Upsilon (4S)$ resonance, which primarily decays into pairs of B mesons. The detector is designed to study light mesons and tau leptons. Entangled pairs of neutral...
At the Large Hadron Collider, the kinematic reconstruction of heavy, short-lived particles is crucial for precision measurements of the Standard Model and searches for new physics. Performing kinematic reconstruction in events with a high multiplicity of final-state objects is especially challenging due to the extensive potential combinatoric assignments. To address this, we present HyPER, a...
In the ATLAS experiment, electrons and photons are reconstructed from energy clusters detected in the electromagnetic calorimeter. To accurately determine their energy, corrections must be applied to the measured energy from these clusters. These adjustments account for energy losses occurring within the passive material of the calorimeter itself. Traditional Multi-variant Analysis methods...
Hyper Kamiokande (HK) is a next generation water Cherenkov detector, currently under construction in the Gifu Prefecture of Japan and due to begin operations in 2027.
The main physics goal of HK is to make the first observation of asymmetries in neutrino and antineutrino oscillations that arise from the CP violating phase. This is achieved by looking at oscillations within a neutrino beam...
The Short Baseline Near Detector (SBND) serves as the near detector for Fermilab's Short Baseline Neutrino (SBN) programme. It is a 112-ton Liquid Argon Time Projection Chamber (LArTPC) designed to study neutrino-argon interactions and search for new physics phenomena such as sterile neutrinos. Situated just 110 m from the Booster Neutrino Beam (BNB), SBND just began its first physics run and...
