By Tommaso Dorigo This week’s graph comes from a recent publication by the CMS experiment, the one I am a proud member of together with about 3000 colleagues from all over the world. CMS (see a 3-D sketch below) is one of the two huge detectors collecting the faint signals of particles produced in the powerful 8-TeV… [Read more…]
March 10, 2012
… at sqrt(s) = 7 TeV CMS Collaboration A search for microscopic black holes in pp collisions at a center-of-mass energy of 7 TeV is presented. The data sample corresponds to an integrated luminosity of 4.7 inverse femtobarns recorded by the CMS experiment at the LHC in 2011. Events with large total transverse energy have… [Read more…]
January 31, 2012
SPEAKER: Eva Halkiadakis We present an update on a number of searches for New Physics, including SUSY and Exotica, based on the recent LHC data, up to the full statistics of ~5/fb recorded by the CMS experiment in 2011. (Video in CDS: Press here) Read more: indico.cern.ch Read also: Lazy photon among the missing in exotic LHC… [Read more…]
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… [Read more…]
October 20, 2011
Matt Strassler From the CMS talk at Berkeley; I’ve added the red dots and excised the low-statistics four-lepton results. Table of numbers of events at CMS in various categories. MET is a measure of whether invisible particles are present; HT is a measure of how much energy is in visible particles. No-OSSF means that if… [Read more…]
August 8, 2011
The W boson carries the weak nuclear force. At the Large Hadron Collider pairs of them may be showing the first signs of the Higgs boson. But they are a decidedly mixed blessing. The current data from the LHC show an effect which might, or might not, be the first indication of the presence of… [Read more…]
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… [Read more…]
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… [Read more…]
July 19, 2011
By Tommaso Dorigo Blogging from the whereabouts of one of the most beautiful places of the Mediterranean, Balos Beach (see picture), I wish to draw your attention today to one fun search that CMS produced on data collected in 2010: the one for gluinos in events with six jets. Gluinos are particles predicted by supersymmetric… [Read more…]
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… [Read more…]
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May 7, 2012
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