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Holiday Chess Riddle

During Christmas holidays I tend to indulge in online chess playing a bit too much, wasting several...

Why Measure The Top Quark Production Cross Section?

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Tommaso DorigoRSS Feed of this column.

Tommaso Dorigo is an experimental particle physicist, who works for the INFN at the University of Padova, and collaborates with the CMS and the SWGO experiments. He is the president of the Read More »

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One year has passed since the joint discovery, by the CMS and ATLAS experiments at the Large Hadron Collider at CERN, of a particle which perfectly fits our expectations for a Standard Model Higgs boson. Highly wanted and sought for at particle colliders since the seventies, the Higgs boson is now an established reality, and the interest of experimental physicists has moved to a detailed study of the observable properties of this particle.
Yesterday I had the great pleasure to listen to George Zweig, who gave seminar about the discovery of the idea of quarks (or Aces, as he originally named them) at the International Conference of New Frontiers in Physics which is going on this week in the nice setting of Kolymbari, on the north-west coast of the Mediterranean island of Crete.
As few of my readers know, I have run a blog written in Greek language in parallel with this one for a couple of years. The idea of that endeavour was twofold: to offer some particle physics outreach in Greek language in the blogosphere, which is difficult to find, and to perfect my writing skills in that language.

The translation job was entertaining but difficult, and I finally gave up for lack of time, so that blog went in a hybernation state for a couple of years. But not any longer - I found a physics student who volunteered to continue the translation job, picking articles from this blog and translating them in Greek for Greek readers.
Thanks to a friend and follower of this blog, which I will not name for once to protect him from your flaming, I can share today with you one of the best instances of involuntary humor in particle physics graphs I have ever seen in my whole life.

The graph appears to be genuine, so this is a good candidate for the IgNobel prize IMHO.


Back from the beautiful Greek island of Naxos, I find myself in Venice for just a day before leaving to another Greek island - Crete. But this time for business rather than vacations: I will be giving a CMS Overview talk at the International Conference of New Frontiers in Physics, which started yesterday in Kolympari, on the north-western coast of the island.

As usual, I am lagging behind with the task of putting together my presentation slides. This time I had been working at a reasonable pace while on vacation, and I thought I was almost done, when I was notified that due to the absence of the CMS colleague who was in charge of speaking about CMS Heavy Ion Results, I was to cover in more detail that part than I would have.
Yesterday CMS published the results of a new search for a heavy partner of the bottom quark, by looking for the decay b' -> bZ: that is, the heavy b' is sought in a so-called Flavour-Changing neutral current process. The "neutral current" is an old but still used terminology to indicate the emission of a neutral vector boson, the Z.