A. De Cosa
A5100708264- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Gamma-ray bursts and supernovae
- CCD and CMOS Imaging Sensors
- International Science and Diplomacy
- Atomic and Subatomic Physics Research
- Radiation Therapy and Dosimetry
- Particle Accelerators and Free-Electron Lasers
- Nuclear reactor physics and engineering
- Noncommutative and Quantum Gravity Theories
- Stochastic processes and financial applications
- Nuclear physics research studies
- Optical properties and cooling technologies in crystalline materials
- Radiation Effects in Electronics
ETH Zurich
2021-2025
Institute of Particle Physics
2024-2025
University of Zurich
2014-2022
European Organization for Nuclear Research
2013-2015
Atlas Copco (Germany)
2015
University of Naples Federico II
2013-2014
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2012-2013
This document is the final report of ATLAS-CMS Dark Matter Forum, a forum organized by ATLAS and CMS collaborations with participation experts on theories Matter, to select minimal basis set dark matter simplified models that should support design early LHC Run-2 searches. A prioritized, compact benchmark proposed, accompanied studies parameter space these repository generator implementations. also addresses how apply Effective Field Theory formalism for collider searches present results...
This report of the BOOST2012 workshop presents results four working groups that studied key aspects jet substructure. We discuss potential first-principle QCD calculations to yield a precise description substructure jets and study accuracy state-of-the-art Monte Carlo tools. Limitations experiments' ability resolve are evaluated, with focus on impact additional (pile-up) proton collisions performance in future LHC operating scenarios. A final section summarizes lessons learnt from analyses...
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at weak scale. When produced experiments such as Large Hadron Collider (LHC) CERN, these long-lived (LLPs) decay far from interaction vertex of primary proton-proton collision. Such LLP signatures distinct those promptly decaying targeted by majority searches for new physics LHC, often requiring customized techniques identify, example, significantly displaced vertices, tracks with...
A bstract The production of dark matter particles from confining sectors may lead to many novel experimental signatures. Depending on the details theory, quark in proton-proton collisions could result semivisible jets particles: collimated sprays hadrons which only some are detectable by particle collider experiments. signature is characterised presence reconstructed missing momentum collinear with visible components jets. This complex topology sensitive detector inefficiencies and...
In this work, we consider the case of a strongly coupled dark/hidden sector, which extends Standard Model (SM) by adding an additional non-Abelian gauge group. These extensions generally contain matter fields, much like SM quarks, and fields similar to gluons. We focus on exploration such sectors where dark particles are produced at LHC through portal undergo rapid hadronization within sector before decaying back, least in part potentially with sizeable lifetimes, particles, giving range...
This White Paper is an input to the ongoing discussion about extension and refinement of simplified Dark Matter (DM) models. Based on two concrete examples, we show how existing DM models (SDMM) can be extended provide a more accurate comprehensive framework interpret characterise collider searches. In first example extend canonical SDMM with scalar mediator include mixing Higgs boson. We that this approach not only provides better description underlying kinematic properties complete model...
This Letter proposes a new signature for confining dark sectors at the Large Hadron Collider. Under assumption of QCD-like hidden sector, hadronic jets containing stable bound states could manifest in proton-proton collisions. We present simplified model with
This Letter proposes a new search for confining dark sectors at the Large Hadron Collider. As result of strong dynamics in hidden sector, matter could manifest proton-proton collisions Collider form hadronic jets containing stable invisible bound states. These semi-visible have been studied theoretically and experimentally fully signature where unstable composite can only decay promptly back to Standard Model quarks. We present simplified model based on two messenger fields separated by...
The CMS and ATLAS collaborations searched for Dark Matter (DM) particles directly produced in pair. searches are performed using the full LHC Run-I dataset recorded with detectors proton-proton collisions at a center-of-mass energy of 8 TeV. Signatures considered include those yielding energetic jets large missing transverse momentum as well electroweak bosons heavy flavour quarks plus energy. No deviation from SM background expectation was found exclusion limits on DM production cross...
This Letter proposes a new signature for confining dark sectors at the LHC. Under assumption of QCD-like hidden sector, hadronic jets containing stable bound states originating from strong dynamics, known as semi-visible jets, could manifest in proton-proton collisions. In proposed simplified model, heavy $Z'$ mediator coupling to SM quarks allows resonant production quarks, subsequently hadronizing and unstable states. The can then decay back via same portal or photons lighter pseudo-scalar...
Abstract This Letter proposes a new signature for confining dark sectors at the LHC. Under assumption of QCD-like hidden sector, hadronic jets containing stable bound states originating from strong dynamics, known as semi-visible jets, could manifest in proton-proton collisions. In proposed simplified model, heavy $$Z'$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>Z</mml:mi> <mml:mo>′</mml:mo> </mml:msup> </mml:math> mediator coupling to SM quarks allows...
This Letter proposes a new signature for confining dark sectors at the Large Hadron Collider. Under assumption of QCD-like hidden sector, hadronic jets containing stable bound states could manifest in proton-proton collisions. We present simplified model with $Z'$ boson yielding production made up and subsequently leading to decays those that are unstable $τ$ leptons Standard Model quarks. The resulting is characterised by non-isolated lepton pairs inside semi-visible jets. estimate...