CERN Accelerating science

Slide 1
A mobile antiproton reservoir for precision measurements
Christian Smorra (Johannes Gutenberg Uni. Mainz) on behalf of the BASE collaboration
Slide 3
Random Number Generators for Precision Monte Carlos
Fred James (CERN)
Slide 2
ISOLDE pinpoints the structure of the SnV centre in diamonds.
Karl Johnston (CERN)
Slide 2
Systematic uncertainties: the new target of HEP Machine Learning
Tommaso Dorigo (INFN)

A word from the Deputy Department Head of EP - September 2020

Dear Colleagues, dear Members of the EP Department and CERN Users,

Welcome to the autumn edition of the EP Newsletter, as the change of weather heralds the new season. You will notice that the look and feel has changed a little, as this is the first that follows the new standard for websites at CERN...


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Interviews & Features

Chips on a ladder: end of production for ALICE-MFT

After more than four years of research and development, design and manufacturing work, the MFT (Muon Forward Tracker), a new detector that will equip the ALICE experiment at the LHC, has seen its construction finalized and is currently under commissioning at CERN

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MADMAX prototype test at CERN

The MAgnetized Disk and Mirror Axion eXperiment (MADMAX) experiment, based on the concept of a dielectric haloscope, aims to use this approach to close the sensitivity gap in the well-motivated range for dark-matter axions. 

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Closing the gap between beam dump and colliders ALPs searches with NA64

A significant number of experiments, currently running planned for the near future, provide exciting opportunities in the search for axion-like particles that can answer some of the outstanding questions of the Standard Model, particularly those related to dark matter or the dark sector of the Universe.

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A timeline of the EP newsletter

A timeline for the newsletter of the EP departments that you can browse and discover previous feature stories and interviews spanning a period of almost eight years since the launch of this online publication. 

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A mobile antiproton reservoir for precision measurements

Presenting the goals of the proposed BASE-STEP project for constructing a transportable antiproton reservoir trap that will allow conducting future antiproton high-precision measurements.

 
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DT group publishes annual report

The EP-DT group has published its Annual Report where key activities throughout 2019 are summarized and a description is given of how the group is organized and interacts with the detector physics community.

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Results from the experiments

CMS restarts and continues working under Covid-19 conditions

The CMS Phase-2 upgrade projects are making good technical progress, and the reviews of technical documentation and resources proceed in a timely fashion while facing the challenge of the COVID-19 pandemic. 

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ATLAS New Small Wheel Upgrade – activities resumed after down-time from COVID-19

The ATLAS collaboration has taken a major step towards preparations for the HL-LHC phase of the LHC with the completion of the two mechanical support discs for its New Small Wheel (NSW) upgrade.

 
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LHCb in the hunt of tetraquarks

The LHCb collaboration has announced the discovery of a new exotic particle: a so-called tetraquark. The finding marks a major breakthrough in a search of almost 20 years, carried out in particle physics labs all over the world.

 
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NA62 experiment at CERN reports first evidence for ultra-rare process sensitive to new physics

NA62 collaboration presented the first significant experimental evidence for the ultra-rare decay of the charged kaon into a charged pion and two neutrinos and sets goals for the new period of data taking.

 
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Pinpointing the structure of the SnV centre in diamond using emission channelling at ISOLDE

First direct structural evidence and quantification for implanted Sn in the SnV “split-vacancy” configuration with ISOLDE deepens our understanding of their applications in processing and communication of quantum information and metrology.

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CERN experiments find first evidence for rare Higgs boson decay

Physicists at CERN have been studying the Higgs boson since its discovery in 2012 and probe the properties of this very special particle by studying its different decay rates to other particles. Recently, CMS and ATLAS experiments announced new results which provide first evidence that the Higgs boson decays into two muons.

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Special Feature on Statistics and Uncertainties

Random Number Generators for Precision Monte Carlos

We are entering into an exciting time in the long history of random numbers as modern Random Number Generators are based on theory of mixing in classical mechanical systems, thus allowing to understand where the randomness comes from, and in a sense measure this randomness.

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What is the likelihood function, and how is it used in particle physics?

In the context of experimental particle physics, “collisions” or “decays” are governed by the laws of quantum mechanics, which intrinsically describe probabilities.The laws and parameters within them must be inferred from experimental data with associated uncertainties. The likelihood function is a central tool for doing so within the main methods of statistical inference.

 

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Systematic uncertainties: the new target of Machine Learning for HEP

Machine learning methods offer multiple benefits in data analysis for particle physics and beyond. The next frontier in experimental physics research calls for the exploitation of new technologies not only for the accurate reconstruction of particle signals but also for a holistic approach in the design of future detectors.

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More Stories


Beyond the Standard Model Explanations of GW190521

The recent detection of a heavy binary black hole merger (GW190521) by LIGO/Virgo poses questions that can be explained by models of new physics, including new light particle losses, modified gravity, large extra dimensions, and a small magnetic moment of the neutrino.

 
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Exploring the physics opportunities of FCCs

Following the 2020 EPPSU, the new edition of the FCC Physics and Experiments Workshop will feature the most recent results appeared in the literature on the study of the physics prospects of the Future Circular Collider project. On the experimental side, it will propose new activities aimed at the development of the detectors and collaborations for a future circular lepton collider.

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