B. Meirose
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View article: Searching for long-lived particles in free neutron experiments
Searching for long-lived particles in free neutron experiments Open
We explore the decay of free neutrons into exotic long-lived particles, whose decays could be detected in the next-generation free neutron experiments. We show that such a possibility is viable as long as the exotic particle is highly mass…
View article: Advancements in Computing and Simulation Techniques for the HIBEAM-NNBAR Experiment
Advancements in Computing and Simulation Techniques for the HIBEAM-NNBAR Experiment Open
The HIBEAM-NNBAR program is a proposed two-stage experiment at the European Spallation Source focusing on searches for baryon number violation processes as well as ultralight dark matter. This paper presents recent advancements in computin…
View article: HighNESS conceptual design report: Volume I
HighNESS conceptual design report: Volume I Open
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…
View article: HighNESS conceptual design report: Volume II. The NNBAR experiment.
HighNESS conceptual design report: Volume II. The NNBAR experiment. Open
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…
View article: The HIBEAM Instrument at the European Spallation Source
The HIBEAM Instrument at the European Spallation Source Open
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…
View article: Searches for baryon number violation in the HIBEAM-NNBAR experiment at the European Spallation Source
Searches for baryon number violation in the HIBEAM-NNBAR experiment at the European Spallation Source Open
The HIBEAM-NNBAR program is a proposed two-stage experiment at the European Spallation Source (ESS) designed to search for baryon number violation, which is - together with C and CP violation - one of the three fundamental Sakharov conditi…
View article: Searches for baryon number violation in the HIBEAM-NNBAR experiment at the European Spallation Source
Searches for baryon number violation in the HIBEAM-NNBAR experiment at the European Spallation Source Open
The HIBEAM-NNBAR program is a proposed two-stage experiment at the European Spallation Source (ESS) designed to search for baryon number violation, which is – together with C and CP violation – one of the three fundamental Sakharov conditi…
View article: The HighNESS Project at the European Spallation Source: Current Status and Future Perspectives
The HighNESS Project at the European Spallation Source: Current Status and Future Perspectives Open
The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that, once completed at full specifications, will operate the world's most powerful pulsed neutron source. …
View article: Design of an optimized nested-mirror neutron reflector for a NNBAR experiment
Design of an optimized nested-mirror neutron reflector for a NNBAR experiment Open
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…
View article: The HIBEAM/NNBAR Calorimeter Prototype
The HIBEAM/NNBAR Calorimeter Prototype Open
The HIBEAM/NNBAR experiment is a free-neutron search for n → sterile n and n → oscillations planned to be installed at the European Spallation Source under construction in Lund, Sweden. A key component in the experiment is the detector…
View article: The development of the NNBAR experiment
The development of the NNBAR experiment Open
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…
View article: Beamline Simulation for the NNBAR Experiment at the European Spallation Source
Beamline Simulation for the NNBAR Experiment at the European Spallation Source Open
The HIBEAM and NNBAR experiments are a proposed fundamental science experiments at the European Spallation Source, performing high precision searches for neutron conversions in several baryon number violating (BNV) channels. For simulation…
View article: Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source
Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source Open
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…
View article: A Possible Neutron-Antineutron Oscillation Experiment at PF1B at the Institut Laue Langevin
A Possible Neutron-Antineutron Oscillation Experiment at PF1B at the Institut Laue Langevin Open
We consider a possible neutron–antineutron (n−n¯) oscillation experiment at the PF1B instrument at Institut Laue Langevin. It can improve the best existing constraint on the transition rate and also allow the testing of the methods and ins…
View article: Second Quantization Approach to COVID-19 Epidemic
Second Quantization Approach to COVID-19 Epidemic Open
In this article, a stochastic SIR-type model for COVID-19 epidemic is built using the standard field theoretical language based on creation and annihilation operators. From the model, we derive the time evolution of the mean number of infe…
View article: Measurement of the cross section for inclusive isolated-photon production in pp collisions at s√=13 TeV using the ATLAS detector
Measurement of the cross section for inclusive isolated-photon production in pp collisions at s√=13 TeV using the ATLAS detector Open
Here, inclusive isolated-photon production in pp collisions at a centre-of-mass energy of 13TeV is studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 3.2fb -1. The cross section is measured as a fu…
View article: The HIBEAM/NNBAR Calorimeter Prototype
The HIBEAM/NNBAR Calorimeter Prototype Open
The HIBEAM/NNBAR experiment is a free-neutron search for $n \rightarrow$ sterile $n$ and $n \rightarrow \bar{n}$ oscillations planned to be installed at the European Spallation Source under construction in Lund, Sweden. A key component in …
View article: A Computing and Detector Simulation Framework for the HIBEAM/NNBAR\n Experimental Program at the ESS
A Computing and Detector Simulation Framework for the HIBEAM/NNBAR\n Experimental Program at the ESS Open
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…
View article: Computing and Detector Simulation Framework for the HIBEAM/NNBAR Experimental Program at the ESS
Computing and Detector Simulation Framework for the HIBEAM/NNBAR Experimental Program at the ESS Open
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…
View article: Real-Time Accelerator Diagnostic Tools for the MAX IV Storage Rings
Real-Time Accelerator Diagnostic Tools for the MAX IV Storage Rings Open
In this paper, beam diagnostic and monitoring tools developed by the MAX IV Operations Group are discussed. In particular, beam position monitoring and accelerator tunes visualization software tools, as well as tools that directly influenc…
View article: Real-Time Accelerator Diagnostic Tools for the MAX IV Storage Rings
Real-Time Accelerator Diagnostic Tools for the MAX IV Storage Rings Open
In this paper, beam diagnostic and monitoring tools developed by the MAX IV Operations Group are discussed. In particular, beam position monitoring and accelerator tunes visualization software tools, as well as tools that directly influenc…
View article: Exclusion Limits on Neutral, Singly and Doubly Charged Vector Bosons at LHC
Exclusion Limits on Neutral, Singly and Doubly Charged Vector Bosons at LHC Open
In this paper, limits are set on $Z^\\prime$, doubly-charged and singly-charged bileptons masses in the context of the the 331 model. The following measurable processes are studied: $pp \\rightarrow \\ell^{+}\\ell^{+}\\ell^{-}\\ell^{-}X$, …
View article: Limits on 331 vector bosons from LHC proton collision data
Limits on 331 vector bosons from LHC proton collision data Open
In this paper, limits are set on bileptons masses and couplings in the\ncontext of the the 331 Model, as well as generic, non-331 Models predicting\nbileptons. The following measurable processes are studied: $pp \\rightarrow\n\\ell^{+}\\el…
View article: Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using s=13 TeV proton-proton collision data
Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using s=13 TeV proton-proton collision data Open
A search for new phenomena in final states characterized by high jet multiplicity, an isolated lepton (electron or muon) and either zero or at least three b-tagged jets is presented. The search uses 36.1 fb$^{－1}$ of $ sqrt{s}=13 $ TeV pro…
View article: Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector
Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector Open
Direct searches for lepton flavour violation in decays of the Higgs and Z bosons with the ATLAS detector at the LHC are presented. The following three decays are considered: H → eτ, H → µτ, and Z → µτ. The searches are based on the data sa…
View article: First results on bilepton production based on LHC collision data and predictions for run II
First results on bilepton production based on LHC collision data and predictions for run II Open
The LHC potential for discovering doubly-charged vector bileptons is\ninvestigated considering the measurable process $p p$ $\\rightarrow$\n$\\mu^{\\mp}\\mu^{\\mp}\\mu^{\\pm}\\mu^{\\pm} X$. The study is performed assuming\ndifferent bilept…
View article: Overview of Dark Matter Searches at the ATLAS Experiment
Overview of Dark Matter Searches at the ATLAS Experiment Open
After a brief introduction a concise summary of some of ATLAS experiment’s stragies to search for dark matter is presented. Emphasis is given to searches in channels involving the Higgs boson.