We demonstrate that the searches for dark sector particles can provide probes of reheating scenarios, focusing on the cosmic millicharge background produced in the early universe. We discuss two types of millicharge particles (mCPs): either with, or without, an accompanying dark photon. These two types of mCPs have distinct theoretical motivations and cosmological signatures. We discuss...
At the FPF site, the background muon levels are expected to be similar to those at the current FASERν site. While the FASERν experiment requires replacing the detector 2-3 times per year, we aim to reduce this to once per year for FASERν2. To achieve this, We studied possibilities to use a sweeper magnet to reduce the background muons to one-third.
In this study, I performed GEANT4...
I will present results obtained using the ARIADNE fast optical readout system and on how these inform the design of a FLArE optical LArTPC. A conceptual design of the FLArE TPC with a light readout plane and fast TimePix cameras will be discussed as well as a vacuum insulated cylindrical cryostat for this TPC option.
The detection of TeV-energy neutrinos by the LHC far-forward detectors FASER/FASER$\nu$ and SND@LHC enables novel opportunities to validate theoretical predictions of of forward light particle production. In this work we present work in progress towards using the FASER and FPF event rate measurements to extract the LHC forward neutrino fluxes in a theory-agnostic manner by means of machine...
Neutrino trident production of di-lepton pairs is well recognized as a sensitive probe of both electroweak physics and physics beyond the Standard Model. Although a rare process, it could be significantly boosted by such new physics, and it also allows the electroweak theory to be tested in a new regime. We demonstrate that the forward neutrino physics program at the Large Hadron Collider...
This talk will aim to present and discuss the in-progress FASER-2 simulation and detector design performance document, which outlines the physics goals, detector requirements, simulation studies, and conceptual design scenarios for the proposed detector. The simulation framework developed uses Geant4 to describe detector geometry for sensitivity studies, along with the ACTS toolkit for track...
Our efforts in searching for hints of new physics require close attention to the signatures of light particles arising in theories beyond the Standard Model (BSM) physics, as they could have eluded our searches. In many theories, these light BSM particles can have long lifetimes and are worth exploring. We focus on light long-lived particles (LLPs) coming from the decay of the discovered Higgs...
Considering that the study of neutrino - nucleus interactions with incident neutrino energy ranges in the GeV - TeV range is feasible at the Large Hadron Collider, we investigate in this work the degree of polarization ${\cal{P}}$ of the (anti) tau lepton produced in (anti) tau neutrino - tungsten interactions. In this study we also investigate the impact of the tau polarization on the pions...
We discuss results from simulations and CNNs to distinguish neutrino CC and NC events with a scintillator bar-tungsten detector in the FASER location.
At FASER, neutrinos are predominantly produced from meson decays, which also result in an intense energetic flux of muons in the forward direction, which are regularly observed by FASER. So far, these muons are treated only as backgrounds to neutrino and new physics studies, and extensive effort is required to suppress them. Here, we consider the opposite scenario and use muons produced in the...
To address the challenges of higher muon background in addition to the increase in luminosity in LHC Run 4, ETH Zurich proposes a novel detector system which aims to provide highly granular 3D tracking, calorimetry and muon identification with a design that is compact, modular and scalable. The proposed FASERCal detector is designed to detect both charged-current and neutral-current neutrino...
