Physics
- The Plot Of The Week- No Higgs In Top Decays
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Now that we know that the Higgs boson has a mass of 125 GeV and displays all the properties that a regular standard model Higgs boson should have, one question you could ask is, is it possible that a top quark decays into a Higgs boson? The question is a l ...
Article - Tommaso Dorigo - Mar 29 2014 - 4:23am
- Book Status
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As I mentioned a few months ago, lately I have been writing a science book for laymen. The idea is to focus on the history of CDF, a particle physics experiment that collected data from 1985 to 2011 at the Fermilab laboratory near Chicago. ...
Blog Post - Tommaso Dorigo - Apr 2 2014 - 5:10am
- The Most Precise Mass Measurement: CMS On Top
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The mass of the top quark is a very important parameter of the standard model: using its value together with other no less fundamental ones (the W boson mass, the Higgs mass, and many parameters describing the properties of Z bosons) it is possible to stud ...
Article - Tommaso Dorigo - Apr 4 2014 - 7:11am
- Standard Model Or Minimal SUSY?
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If I look back at the first times I discussed the important graph of the top quark versus W boson mass, nine years ago, I am amazed at observing how much progress we have made since then. The top quark mass in 2005 was known with 2-3 GeV precision, the W b ...
Article - Tommaso Dorigo - Apr 7 2014 - 1:33pm
- Dark Matter Has Conferences, Now It Needs Evidence
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In February, the University of California, Los Angeles held its 11th Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe- "Dark Matter 2014" was aimed at discussing the latest progress in the quest to identify dark ...
Article - News Staff - Apr 8 2014 - 4:09pm
- What Next?
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Yesterday I was in Rome, at a workshop organized by the Italian National Institute for Nuclear Physics (INFN), titled "What Next". The event was meant to discuss the plan for basic research in fundamental physics and astrophysics beyond the next ...
Article - Tommaso Dorigo - Apr 10 2014 - 11:44am
- Supersymmetry Found In Nature?
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U.C. Santa Barbara physicist Tarun Grover says he has definitive mathematical evidence for supersymmetry in a condensed matter system. Sought after in the realm of subatomic particles by physicists for several decades, supersymmetry describes a unique rel ...
Article - News Staff - Apr 9 2014 - 4:16pm
- 4-Quark Hadron Confirmed At LHC
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The existence of exotic hadrons — a type of matter that cannot be classified within the traditional quark model- has been confirmed in a forthcoming article prepared by the Large Hadron Collider beauty (LHCb) Collaboration at CERN in Geneva, Switzerland. ...
Article - News Staff - Apr 10 2014 - 4:35pm
- Aldo Menzione And The Design Of The Silicon Vertex Detector
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Below is a clip from a chapter of my book where I describe the story of the silicon microvertex detector of the CDF experiment. CDF collected proton-antiproton collisions from the Tevatron collider in 1985, 1987-88, 1992-96, and 2001-2011. Run 1A occurred ...
Article - Tommaso Dorigo - Apr 15 2014 - 5:21pm
- Quasiparticle Excitons- First Direct Observation In Motion
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A quasiparticle called the exciton is responsible for the transfer of energy within devices, such as solar cells, LEDs, and semiconductor circuits, and has been understood for decades, but exciton movement within materials has never been directly observed ...
Article - News Staff - Apr 16 2014 - 8:42am