While neutrino oscillations provide a well motivated probe for CP violation, non-trivial matter effects and our inability to build experiments in an anti-Earth limits our studies to improper tests of its effects. These limitations in turn motivate (from CPT theorem) time invariance studies, as under certain matter potential profiles, proper time invariance and improper time invariance are the...
We study topological aspects of particle production using Stokes phenomenon. An explicit map between the standard $\beta$-coefficient computation, and Stokes constants from the perspective of the F-matrix formalism is presented. In scenarios where the particle dispersion relation reduces, in the long wavelength limit $(k\rightarrow 0)$, to the form $z^n$ $(n \in \mathbb{Z}_{>0})$ in...
This poster presents simulation studies aimed at optimizing the design of the graphite target and capture system for the Muon Collider demonstrator, potentially at Fermilab. Using the G4Beamline simulation framework, we model proton interactions with a graphite target to analyze charged pion production and capture along the target axis, categorizing production mechanisms (primary, secondary,...
Experiments designed to detect ultra-high energy (UHE) neutrinos using radio techniques are also capable of detecting the radio signals from cosmic-ray (CR) induced air showers. These CR signals are important both as a background and as a tool for calibrating the detector. The Askaryan Radio Array (ARA), a radio detector array, is designed to detect ultra-high-energy (UHE) neutrinos. The array...
Weakly-supervised anomaly detection methods offer a powerful approach for discovering new physics by comparing data to a background-only reference. However, the sensitivity of existing strategies can be significantly limited by rare signals or high-dimensional, noisy feature spaces. We present Prior-Assisted Weak Supervision (PAWS), a novel machine-learning technique that significantly boosts...
The NuMI Off-Axis $\nu_e$ Appearance (NOvA) Experiment is a long baseline neutrino experiment consisting of two detectors, a Near Detector (ND) at Fermilab in Batavia, IL, and a Far Detector (FD) in Ash River, MN. The ND observes the unoscillated neutrino beam while the FD is able to observe neutrinos which have oscillated. Because the ND does not observe oscillated neutrinos, it works in...
This study investigates the optimization of pion and muon yields from an 8GeV proton beam incident on a graphite target, as part of a design effort for a muon collider demonstrator. The primary objective is to determine the optimal geometric configuration between the target and a solenoidal capture channel to maximize secondary particle production while mitigating potential damage from...
The ATLAS experiment in the LHC Run 3 uses a two-level trigger system to select events of interest to reduce the 40 MHz bunch crossing rate to a recorded rate of up to 3 kHz of fully-built physics events. The trigger system is composed of a hardware based Level-1 trigger and a software based High Level Trigger. The selection of events by the High Level Trigger is based on a wide variety of...
T2K is a long-baseline experiment measuring neutrino and antineutrino oscillations by observing the disappearance of muon neutrinos, as well as the appearance of electron neutrinos, over a long 295km distance. The ND280 near detector at J-PARC plays a crucial role to minimise the systematic uncertainties related to the neutrino flux and neutrino-nucleus cross-sections as it measures the...
The search for neutrinoless double beta decay presents one of the most compelling experimental pathways for the discovery of lepton number violation and, more broadly, new physics beyond the Standard Model. Xe-136, with its relatively high isotopic abundance, ease of enrichment, and favorable Q-value, is one of the strongest candidates for the discovery of neutrinoless double beta decay,...
A meticulous and high-fidelity determination of the atmospheric oscillation parameters, $\Delta m^2_{31}$ and $\theta_{23}$, emerges as an indispensable prerequisite for an accurate characterization of terrestrial matter effect in long-baseline neutrino experiments that is intrinsically entwined with the resolution of the neutrino mass ordering conundrum and a robust determination of the...
A search for pairs of light neutral bosons (a) resulting from the decay of a Higgs boson is performed. The a bosons have a mass in the range of 10 to 100 MeV and decay into an electron-positron pair. The search is conducted using proton-proton collision data at sqrt(s) = 13 TeV, corresponding to an integrated luminosity of 138 fb^-1. Due to the low mass of the a bosons, their decay products...
The Level-1 muon endcap trigger in the ATLAS experiment utilises signals from the Thin Gap Chambers (TGCs) located in the outer muon stations. A significant challenge for this system has been the high background rate caused by particles not originating at the interaction point, which increased the Level-1 trigger rate. To address this issue, the New Small Wheel (NSW) detectors, installed at...
The 10 TeV MAIA detector concept represents the frontier of future muon colliders. With the potential to perform precision measurements of Standard Model processes and to explore rare phenomena at unprecedented energies, MAIA provides a unique opportunity to high-energy physicists that has previously been unattainable. Our study aims to improve the TauFinder reconstruction algorithm for the...
Atmospheric muon neutrinos and antineutrinos passing through the Earth experience matter effect induced oscillations, due to the interior structure of the Earth, which only affect neutrinos or antineutrinos depending on the true neutrino mass ordering (NMO). By leveraging the fact that more neutrinos are expected to be detected than antineutrinos in IceCube DeepCore, the detector can be used...
As we pursue new physics discoveries at the HL-LHC, one of the important technical challenges will be efficiently extracting physics insights from the massive data volume. To enable rapid execution of this "end-user" step of the workflow, the Coffea framework aims to provide a set of user-friendly columnar tools that facilitate efficient analyses at scale. This poster will describe the...
We present preliminary lattices for a rapid cycling synchrotron (RCS) chain based on a bottom up design for a 10 TeV parton center-of-momentum (pCM) muon collider sited at Fermilab. The smallest RCS rings in this lattice are 6.28 km in circumference and the largest RCS ring fitting fully within the Fermilab site is 15.5 km. To reach 5 TeV per beam, a single tunnel containing up to two rings is...
Previous CMS searches for emerging jets (EMJs) have focused on confined dark sector models with a bi-fundamental scalar mediator and dark pion decays primarily within the tracker volume. Additional constraints on dark pion lifetime and mass, as well as mediator mass, have been set by a search for long-lived particle (LLP) showers in the muon system. However, EMJs produced by decays within the...
The Short-Baseline Near Detector (SBND) is a 112-ton liquid argon time projection chamber (LArTPC) serving as the near detector of the Short-Baseline Neutrino Program at Fermilab. SBND aims to make precise measurements of neutrino-argon interactions, necessitating an extensive calibration program for the LArTPC to ensure precision/accuracy in these measurements. This talk describes the use...
This is a poster to compliment the talk linked [here][1]. Below is a re-posted abstract.
*The search for resonant mass bumps in invariant-mass histograms is a fundamental approach for uncovering Beyond the Standard Model (BSM) physics at the LHC. Traditional, model-dependent analyses that utilize this technique, such as those conducted using data from the ATLAS detector, often require...
With the increasing size of the machine learning (ML) model and vast datasets, the foundation model has transformed how we apply ML to solve real-world problems. Multimodal language models like chatGPT and Llama have expanded their capability to specialized tasks with common pre-train. Similarly, in high-energy physics (HEP), common tasks in the analysis face recurring challenges that demand...
The ATLAS level-1 calorimeter trigger is a custom-built hardware system
that identifies events containing calorimeter-based physics objects, including electrons, photons, taus, jets, and missing transverse energy.
In Run 3, L1Calo has been upgraded to process higher granularity input data. The new trigger comprises several FPGA-based feature extractor modules, which process the new digital...
Detector visualization plays a vital role throughout the lifecycle of high-energy physics (HEP) experiments, yet existing detector descriptions, such as GDML, lack compatibility with industrial 3D tools. We present an automated conversion framework that transforms four major HEP detector types, including GDML, Geant4, ROOT and DD4hep, into standardized FBX models compatible with a industrial...
The Askaryan Radio Array (ARA) is an ultra-high energy (UHE, >10 PeV) neutrino detector at the South Pole, designed to observe radio Askaryan emission from neutrino interactions in ice. A key challenge in reconstructing neutrino arrival directions in ARA is accurately determining the polarization of detected signals, as polarization provides crucial information about the emission geometry of...
The Short-Baseline Neutrino (SBN) Program at Fermilab consists of two liquid argon time projection chamber (LArTPC) detectors: the Short-Baseline Near Detector (SBND) located 110 meters downstream from the Booster Neutrino Beam (BNB) target, and the ICARUS detector positioned 600 meters downstream from the BNB target. The program is designed to probe short-baseline neutrino anomalies,...
