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The Plot Of The Week - MSSM Higgs Limits

... of their search for neutral MSSM Higgs bosons in the tau-pair decay mode. Not more than 12 hours ago in fact I had been looking for ... of nicely distinguish the decays of Higgs bosons to tau lepton pairs from all the concurring backgrounds. The figure on the right ...

Article - Tommaso Dorigo - Jun 28 2011 - 11:05pm - 0 attachments

42 Questions For Particle Physicists

... one lepton ? 3.3 If a particle with average lifetime tau has not decayed after a time t, what is the probability that it decays in ... responsible besides other things of the decay of muons (tau=10^-6 s), of B mesons (tau=10^-12 s), and neutrons (tau=10^3 s). Say what ...

Article - Tommaso Dorigo - Jun 30 2009 - 2:47pm - 0 attachments

The Point On Higgs Searches

... of Z bosons, pairs of photons, pairs of b-quarks, pairs of tau leptons, pairs of top quarks. Also, these signatures may arise by ...

Article - Tommaso Dorigo - Jun 6 2011 - 10:32am - 0 attachments

Muon Neutrinos change 'flavors' to electron? A clue in why we are made of matter and not antimatter

... come in three types - muon, electron and tau - generally travel at the speed of light and can easily pass pass through ... had previously measured the change of muon neutrinos to tau neutrinos and electron neutrinos to muon neutrinos or tau neutrinos, she said.  The shift of muon neutrinos to electron ...

Cool Link - Hank Campbell - Jun 16 2011 - 10:55am - 0 attachments

Triggering - The Subtle Art Of Being Picky

... or muons, or jets, or missing energy, or photons, or tau candidates. Each trigger takes its own decision, and in the case this is a ...

Article - Tommaso Dorigo - Jan 17 2010 - 1:08pm - 0 attachments

Hadronic Dibosons Seen. Next Stop: The Higgs!

... W -> mu nu decays of the same kind; W -> tau nu decays altogether (tau leptons are very hard to distinguish from hadronic jets); Z -> ...

Article - Tommaso Dorigo - May 31 2009 - 11:32am - 0 attachments

A Top Cross Section Measurement I Like

... experimentalists oftentimes mean electrons or muons, since tau leptons are harder to identify with certainty. So the "single lepton" final ... left to study ? Of course, all the final states involving tau leptons were also pursued with momentum. This was the search for the "tau ...

Article - Tommaso Dorigo - May 14 2011 - 1:35am - 0 attachments

Higgs? We ain't got no Higgs

The title is a playful variation on a line from a Bogart movie, The Treasure of the Sierra Madre .  That was an adaptation from a novel of the same title: "All right," Curtin shouted back. "If you are the [LHC] police, where are your [ ...

Blog Post - Doug Sweetser - Apr 20 2011 - 9:00am - 0 attachments

No Flavour Changing Neutral Currents Seen By DZERO

It has been a while since I last wrote about results from the DZERO collaboration, and I am happy to be given a chance to do so by my casual Monday morning browsing of the most recent Arxiv preprints. The fact that I am not a member of DZERO but I sti ...

Article - Tommaso Dorigo - Mar 28 2011 - 4:53pm - 0 attachments

New Tight SUSY Exclusion From ATLAS

... are indeed still electroweak ones: W production yielding tau leptons and tau neutrinos, and Z production yielding neutrino pairs. Both W and Z bosons ...

Article - Tommaso Dorigo - Mar 3 2011 - 11:43am - 0 attachments