Physics
- Quaternionic rotation
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The complex phase of a quaternion becomes apparent when a (complex) plane is put through its real axis and its imaginary part. In multiplication, quaternions do not commute. Thus, in general a b / a ≠ b. ...
Blog Post - Johannes van Leunen - Aug 9 2017 - 7:21am
- Higgs Decays To Tau Leptons: CMS Sees Them First
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I have recently been reproached, by colleagues who are members of the competing ATLAS experiment, of misusing the word "see" in this blog, in the context of searches for physics signals. That was because I reported that CMS recently produced a ve ...
Article - Tommaso Dorigo - Aug 9 2017 - 9:41am
- Revenge Of The Slimeballs- Part 3
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This is the third part of Chapter 3 of the book "Anomaly! Collider Physics and the Quest for New Phenomena at Fermilab". The chapter recounts the pioneering measurement of the Z mass by the CDF detector, and the competition with SLAC during th ...
Article - Tommaso Dorigo - Aug 18 2017 - 4:29am
- Revenge Of The Slimeballs- Part 4
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This is the fourth part of Chapter 3 of the book "Anomaly! Collider Physics and the Quest for New Phenomena at Fermilab". The chapter recounts the pioneering measurement of the Z mass by the CDF detector, and the competition with SLAC during t ...
Article - Tommaso Dorigo - Aug 18 2017 - 4:37am
- Basic quantum field theory
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Abstract In the eighteenth century, scientists discovered the ingredients of basic quantum field theory. ...
Blog Post - Johannes van Leunen - Aug 21 2017 - 2:34pm
- Revenge Of The Slimeballs Part 5: When US Labs Competed For Leadership In HEP
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This is the fifth and final part of Chapter 3 of the book "Anomaly! Collider Physics and the Quest for New Phenomena at Fermilab". (the beginning of the chapter was omitted since it described a different story). The chapter recounts the pionee ...
Article - Tommaso Dorigo - Aug 23 2017 - 9:57am
- A Narrow Escape From The Cumbre Rucu Volcano
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If I am alive, I probably owe it to my current very good physical shape. That does not mean I narrowly escaped a certain death; rather, it means that if I had been slower there are good chances I would have got hit by lightning, under arduous conditions, ...
Article - Tommaso Dorigo - Aug 26 2017 - 4:10am
- Solar Eclipse Hold the Corona: Testing Einstein, and the Theories of Everything.
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A rthur Eddington and others tried numerous times to test Einstein's general theory of relativity by photographing the stars which appear in the sky next to the eclipsed sun. Einstein's theory predicted a particular change in their apparent po ...
Blog Post - Hontas Farmer - Aug 26 2017 - 2:55pm
- CMS Reports Evidence For Higgs Decays To B-Quark Pairs
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Another chapter in the saga of the search for the elusive, but dominant, decay mode of the Higgs boson has been reported by the CMS collaboration last month. This is one of those specific sub-fields of research where a hard competition arises on the answer ...
Article - Tommaso Dorigo - Sep 12 2017 - 9:59am
- Rediscovered Dark Quanta
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Abstract Two and a half centuries ago, scientist discovered solutions of the wave equation that represent dark quanta. ...
Blog Post - Johannes van Leunen - Sep 13 2017 - 5:20am