Explanipedia

Fundamental Nuclear and Particle Physics At Neutron Sources Open

H. Abele, L. AAstrand, M. Atzori Corona, S. Baeßler, M. Bartis , et al. · 2025

Fundamental neutron and neutrino physics at neutron sources, combining precision measurements and theory, can probe new physics at energy scales well beyond the highest energies probed by the LHC and possible future high energy collider fa…

United States Muon Collider Community White Paper for the European Strategy for Particle Physics Update Open

M. Begel, P. Bhat, Nathaniel Craig, S. Dasu, K. F. Di Petrillo , et al. · 2025

This document is being submitted to the 2024-2026 European Strategy for Particle Physics Update (ESPPU) process on behalf of the US Muon Collider community, with its preparation coordinated by the interim US Muon Collider Coordination Grou…

The HIBEAM instrument at the European spallation source Open

V. Santoro, David Milstead, P. Fierlinger, W. M. Snow, Jorge Amaral , et al. · 2025

The European spallation source (ESS) will be the world’s brightest neutron source and will open a new intensity frontier in particle physics. The HIBEAM collaboration aims to exploit the unique potential of the ESS with a dedicated ESS ins…

HighNESS conceptual design report: Volume I Open

V. Santoro, Omar Abou El Kheir, Debdipto Acharya, Mina Akhyani, K.H. Andersen , et al. · 2024

The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world’s most powerful pulsed neutron source. Supporte…

HighNESS conceptual design report: Volume II. The NNBAR experiment. Open

V. Santoro, Omar Abou El Kheir, Debdipto Acharya, Mina Akhyani, K.H. Andersen , et al. · 2024

A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower mod…

Highlights from LHC Detector Upgrades Open

G. Brooijmans · 2024

The High Luminosity LHC will operate at luminosities up to 7.5 times the original LHC design luminosity, and accumulate 3 times more data than originally envisioned. In order to fully exploit the physics potential of this new phase, the de…

The HIBEAM Instrument at the European Spallation Source Open

V. Santoro, D. A. Milstead, P. Fierlinger, W. M. Snow, J. Barrow , et al. · 2023

The European Spallation Source (ESS) will be the world's brightest neutron source and will open a new intensity frontier in particle physics. The HIBEAM collaboration aims to exploit the unique potential of the ESS with a dedicated ESS ins…

HighNESS Conceptual Design Report: Volume I Open

V. Santoro, Omar Abou El Kheir, Debdipto Acharya, Mina Akhyani, K. H. Andersen , et al. · 2023

The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world's most powerful pulsed neutron source. Supporte…

Considerations in the Pursuit of Future Colliders Open

G. Brooijmans · 2023

Tackling the many open questions in particle physics will require the construction of new colliders. This short note includes a few considerations that seem to be brought up rarely.

Particle physics at the European Spallation Source Open

H. Abele, A. Alekou, A. Algora, K.H. Andersen, S. Baeßler , et al. · 2023

Design of an optimized nested-mirror neutron reflector for a NNBAR experiment Open

Richard Wagner, J. Barrow, C. Böhm, G. Brooijmans, H. Calén , et al. · 2023

The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with an expected sensitivity improvement of three orders of magnitude compared to the last such search. This paper describes b…

The development of the NNBAR experiment Open

F. Backman, J. Barrow, Y. Beßler, A. Bianchi, C. Böhm , et al. · 2022

The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with a sensitivity improvement of three orders of magnitude compared to the last such search. This paper describes progress to…

The LHC Olympics 2020 a community challenge for anomaly detection in high energy physics Open

Gregor Kasieczka, Benjamin Nachman, David Shih, O. Amram, Anders Andreassen , et al. · 2022

\n A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection m…

Combined CDF and D0 Searches for the Standard Model Higgs Boson Decaying to Two Photons with up to 8.2 fb^-1 Open

B. Trocmé, M. Herndon, E. James, T. R. Junk, N. Krumnack , et al. · 2022

We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV, focusing on the decay H {yields} {gamma}{gamma}. We compute…

Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source Open

S.C. Yiu, B. Meirose, J. Barrow, C. Böhm, G. Brooijmans , et al. · 2022

The goal of the HIBEAM/NNBAR program is to search for baryon number violation via the conversion or oscillation of neutrons into sterile neutrons and/or antineutrons at the European Spallation Source. A key experimental component of the pr…

The LHC Olympics 2020 a community challenge for anomaly detection in high energy physics Open

Gregor Kasieczka, Benjamin Nachman, David Shih, O. Amram, Anders Andreassen , et al. · 2021

A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection meth…

Anomalous jet identification via sequence modeling Open

Alan Kahn, J. L. Gonski, I. Ochoa, D. M. Williams, G. Brooijmans · 2021

This paper presents a novel method of searching for boosted hadronically decaying objects by treating them as anomalous elements of a contaminated dataset. A Variational Recurrent Neural Network (VRNN) is used to model jets as sequences of…

A Computing and Detector Simulation Framework for the HIBEAM/NNBAR\n Experimental Program at the ESS Open

J. Barrow, G. Brooijmans, José Ignacio Márquez Damián, Douglas D. DiJulio, K. Dunne , et al. · 2021

The HIBEAM/NNBAR program is a proposed two-stage experiment at the European\nSpallation Source focusing on searches for baryon number violation via\nprocesses in which neutrons convert to antineutrons. This paper outlines the\ncomputing an…

Computing and Detector Simulation Framework for the HIBEAM/NNBAR Experimental Program at the ESS Open

J. Barrow, G. Brooijmans, José Ignacio Márquez Damián, Douglas D. DiJulio, K. Dunne , et al. · 2021

The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source focusing on searches for baryon number violation via processes in which neutrons convert to antineutrons. This paper outlines the computing and d…

The Large Hadron-Electron Collider at the HL-LHC Open

H. Aksakal, N. Andari, D. Angal-Kalinin, Stefan Antusch, L. Aperio Bella , et al. · 2020

The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy recovery technology, it collides a novel, intense electr…

Les Houches 2019 Physics at TeV Colliders: New Physics Working Group\n Report Open

G. Brooijmans, Cédric Delaunay, A. Delgado, Christoph Englert, Adam Falkowski , et al. · 2020

This report presents the activities of the `New Physics' working group for\nthe `Physics at TeV Colliders' workshop (Les Houches, France, 10--28 June,\n2019). These activities include studies of direct searches for new physics,\napproaches…

The Phase-I trigger readout electronics upgrade of the ATLAS liquid argon calorimeters Open

G. Aad, A. V. Akimov, K. Al Khoury, M. Aleksa, T. Andeen , et al. · 2019

New Physics at the LHC: A Les Houches Report. Physics at Tev Colliders\n 2007 -- New Physics Working Group Open

G. Brooijmans, Christophe Grojean, Graham D. Kribs, Claire Shepherd-Themistocleous, Kaustubh Agashe , et al. · 2018

We present a collection of signatures for physics beyond the standard model\nthat need to be explored at the LHC. The signatures are organized according to\nthe experimental objects that appear in the final state, and in particular the\nnu…

Les Houches 2017: Physics at TeV Colliders New Physics Working Group Report Open

G. Brooijmans, Matthew J. Dolan, Stefania Gori, Fabio Maltoni, Matthew McCullough , et al. · 2018

We present the activities of the `New Physics' working group for the `Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics studies connected with the Higgs boson and its properties, di…

Les Houches 2017: Physics at TeV Colliders New Physics Working Group\n Report Open

G. Brooijmans, Irene Niessen, Timur Delahaye, R. Sekhar Chivukula, Christian Speckner , et al. · 2018

We present the activities of the `New Physics' working group for the `Physics\nat TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report\nincludes new physics studies connected with the Higgs boson and its properties,\…

Development of ATLAS Liquid Argon Calorimeter readout electronics for the HL-LHC Open

G. Brooijmans · 2017

The LHC high-luminosity upgrade in 2024-2026 requires the associated detectors to operate at luminosities about 5-7 times larger than assumed in their original design. The pile- up is expected to increase to up to 200 events per proton bun…

The Single-Phase ProtoDUNE Technical Design Report Open

B. Abi, R. Acciarri, M. A. Acero, Mark Adamowski, C. Adams , et al. · 2017

ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that is under construction and will be operated at the CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a crucial part of the DUNE effort towards the construction of t…

The Single-Phase ProtoDUNE Technical Design Report Open

B. Abi, S. Bansal, А.А. Федоров, Bugra Kocaman, M. Dracos , et al. · 2017

ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that is under construction and will be operated at the CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a crucial part of the DUNE effort towards the construction of t…

SEARCHES WITH BOOSTED OBJECTS AT ATLAS AND CMS Open

G. Brooijmans · 2017

The discovery of the Higgs boson confirms the validity of the Standard Model and suggests new physics should exist close to the Higgs mass scale. Since the Higgs mass fine-tuning is proportional to the square of the energy scale of new phy…

Measurement of the top quark mass in all-jet events Open

V. M. Abazov, B. Abbott, A. Abdesselam, M. Abolins, V. Abramov , et al. · 2017

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