Today I read with pleasure a paper on Supersymmetry which is surprisingly well written and clear. I can only warmly advise anybody seriously interested in the phenomenology of SUSY (in particular,…

The family of Upsilon resonances is among the few things that can always cheer me up and remind me about my fascination for elementary particles when I get bored about my job. The sight of their mass…

Since 1930, efforts have been made to get our best theory for gravity - general relativity (GR) - to work with our best theory for atoms - quantum field theory (QFT) in the forms quantum…

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…

The medium in which light propagates is space. This space can curve. The curvature is not static. So, this space moves. Its behavior can be analyzed by a kind of fluid dynamics. Let us call this…

Entropy. A subject that comes back again and again and again and again and again in this blog. And so does the question in my inbox: "what exactly is entropy?" On the internet you can find a plethora…

At about the 1 minute mark in a youtube Yale Lecture, titled The Taylor Series and Other Mathematical Concepts, the teacher tells his class that he will be presenting the Taylor Series and the class…

[Retracted: In this blog I hope to get to a well known issue in general relativity, namely that gravitational energy needs to be defined for a spacetime volume instead of at a point.]  The [new…

Researchers have discovered a previously unknown particle composed of three quarks in the Large Hadron Collider (LHC) particle accelerator. The baryon known as Xi_b^* confirms fundamental assumptions…

In a recent PRL article Artemis Spyrou and collaborators have reported on the first observation of an exotic form of nucleons, the long-sought dineutron. Dineutron was predicted theoretically as a…