ATLAS

The LS2 period for the ATLAS detector

The main upgrade activities are all aimed at enhancing the capability of the detector to trigger more efficiently on leptonic and hadronic signatures. In particular it is essential to preserve the ability to trigger efficiently on electron and muons…

HL-LHC computational challenge for ATLAS and CMS experiments

The two general purpose LHC Experiments, ATLAS [1] and CMS [2], are going to be confronted with challenging experimental conditions at the High Luminosity LHC Run (HL-LHC), starting in 2026. In particular, computing systems will have to cope with…

Particle colliders join the quest for dark energy.

The birth of a new science The beginning of the twentieth century was marked by two of the greatest scientific discoveries: quantum mechanics and the theory of relativity, which became the driving forces behind an array of new scientific…

Axion-like particle searches at the LHC

The Standard Model (SM) of Particle Physics is plagued by some longstanding conceptual and practical questions, and we have to go beyond the Standard Model to address them. A guiding principle of the Standard Model is that we should expect to see…

LHC's upgrade takes shape

A ground-breaking ceremony was held on the 15th of June, to celebrate the start of civil engineering work for a major upgrade to the LHC . When completed in 2026, the HL-LHC will produce a five to seven times higher rate of proton-proton collisions…

Connecting the dots: applying deep learning techniques in HEP

With massive amounts of computational power, machines can now recognize objects and translate speech in real time. Deep-learning software attempts to mimic the activity in layers of neurons in the neocortex, the wrinkly 80 percent of the brain where…

ATLAS further investigates the width of top quark

The top quark is the heaviest known elementary particle and completes the quark sector of the standard model (SM). Like other fermions in the standard model (SM), it decays through the electroweak interaction. But unlike b and c quarks, which form…

Searching for leptoquarks at the LHC

Last month, Admir Greljo (University of Mainz) and Abdollah Mohammad (Kansas State University, US) during the Collider Cross Talk, gave a comprehensive overview of the theoretical and experimental aspects in leptoquarks searches. Leptoquarks are…

ATLAS observes Higgs boson produced in association with top quarks

The ATLAS collaboration presented the first evidence of “ttH production”, a rare process where a pair of top quarks emits a Higgs boson. Observing this process would provide new insight into the Higgs mechanism and allow for new studies of how…

A Moriond Retrospective: New Results from the LHC Experiments

Every March, particle physicists around the world take two weeks to promote results, share opinions and do a bit of skiing in-between. This is the Moriond tradition and the 52nd iteration of the conference took place this year in La Thuile, Italy.…

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