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"Everything should be as simple as it is, but not simpler", Albert Einstein
Browsing All posts tagged under »ATLAS«
ATLAS Experiment: Search for dark matter candidates
Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector A search for new phenomena in events with a high-energy jet and large missing transverse momentum is performed using data from proton-proton collisions at sqrt(s)=7 TeV with the ATLAS experiment at the Large […]
The ATLAS Collaboration: Search for supersymmetry …
October 7, 2012
… at √s = 7 TeV in final states with large jet multiplicity, missing transverse momentum and one isolated lepton with the ATLAS detector Read more at : cdsweb.cern.ch
New SUSY Limits From ATLAS
September 4, 2012
By Tommaso Dorigo A new ATLAS search for supersymmetric signatures in 2011 LHC data has appeared last week in the arxiv. The result ? No hint of a signal, not even for ready money. So if you are on a hurry, you can just have a glance at the graph below, which summarizes the measurement in […]
ATLAS: 5.9 Sigma For A 126 GeV Higgs !
July 31, 2012
By Tommaso Dorigo ATLAS has just released a note which summarizes the searches for the standard model Higgs boson in 7-TeV and 8-TeV data. Since July 4th the main improvement is the addition of the WW channel, which had not been shown back then. With it, the combined local significance of the 126 GeV Higgs […]
Quark Excitement: Is there anything smaller?
May 31, 2012
Mankind has forever sought to determine the most fundamental components of matter. From the atom to the nucleus to the proton and neutron, and finally to the quark, we have asked each step of the way “Is this it or is there something inside?” ATLAS physicists have just taken another step toward tackling that very […]
The ATLAS detector on a smartphone
May 30, 2012
About LHsee LHsee is an educational tool available for Android OS mobile smartphones and tablet PCs. It has been custom designed to provide an accurate and interactive visual representation of complex high-energy physics events recorded by the ATLAS detector. Features include live streaming and reconstruction of collision data from the CERN Large Hadron Collider. The […]
LHC reports discovery of its first new particle
December 22, 2011
The Large Hadron Collider (LHC) on the Franco-Swiss border has made its first clear observation of a new particle since opening in 2009. Known as Chi-b (3P), it is a boson – the label given to particles that can carry the forces of nature. The as-yet unpublished discovery isreported on the Arxiv pre-print server. The […]
Update on the Standard Model Higgs searches in ATLAS and CMS
December 13, 2011
The main conclusion is that the Standard Model Higgs boson, if it exists, is most likely to have a mass constrained to the range 115.5-131 GeV by the ATLAS experiment, and 115-127 GeV by CMS 13 December 2011. In a seminar held at CERN today, the ATLAS and CMS experiments presented the status of their […]
The Plot Of The Week – Heavy Particle Production In ATLAS
August 25, 2011
If you work in experimental high-energy physics you soon acquire a particular sensitivity to the economical display of relevant information. Producing figures that convey the most meaning with the minimum effort is sort of an art, and it is a necessary consequence that HEP experimentalists -the smart ones- end up converging on the definition of […]
New ATLAS Limits On Higgs Mass
August 22, 2011
By Tommaso Dorigo Much awaited, the results of searches for the Higgs boson at the Large Hadron Collider have been released by the ATLAS collaboration, and are being shown at the Lepton-Photon conference in Mumbay, India. I will provide here just the main results, with little commentary – I wish to let the cake cool down […]
The Plot Of The Week
August 2, 2011
ATLAS Test Of The CDF Dijet Mass Bump Read more: http://www.science20.com
Higgs boson ‘hints’ also seen by US lab
July 24, 2011
A US particle machine has seen possible hints of the Higgs boson, it has emerged, after reports this week of similar glimpses at Europe’s Large Hadron Collider (LHC) laboratory. The Higgs boson sub-atomic particle is a missing cornerstone in the accepted theory of particle physics. Researchers have been analysing data from the Tevatron machine near […]
Cern scientists suspect glimpse of Higgs boson ‘God particle’
July 22, 2011
Unusual data bumps detected by two teams at Large Hadron Collider thought to be glimpse of elusive source of particle mass Scientists may have caught their first glimpse of the elusiveHiggs boson, or “God particle”, which is thought to give mass to the basic building blocks of nature. Researchers at the Large Hadron Collider at […]
Update of Background Studies in the Search for the Higgs Boson
May 9, 2011
…in the Diphoton Channel with the ATLAS detector at √s = 7TeV The ATLAS collaboration This note presents an update of the study of the backgrounds in the search for the Higgs boson decaying into a pair of photons. The analysis done with 38 pb-1 of pp collision data collected in 2010 with the ATLAS […]
Elusive Higgs slips from sight again
May 4, 2011
Now you see it, now you don’t. Rather like a conjurer’s white rabbit, the elusive Higgs boson may have slipped from sight again. A recent report hinted at a glimpse of the long-sought particle at a major detector at the Large Hadron Collider (LHC) at CERN near Geneva, Switzerland. But a second detector has now […]
October 23, 2012
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