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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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In thirty minutes I will jump on a flight to Frankfurt and from there to Kobe, Japan, where I am attending the twenty-ninth edition of the Physics in Collisions conference. No big talk in store for me this time; no Westminster central hall kind of thing, nor spotlights or interviews. I will just be presenting a poster. Well, two.
Today I wish to offer you the figure attached at the bottom of this article, which shows a combination of recent determinations of the rate at which the Tevatron proton-antiproton collisions produce single top quarks.
"It is not who votes that counts, but who counts the votes"
(From a sentence attributed to Josef Stalin)

With a thought to Middle Eastern elections...
Today, although fully submerged by an anomalous wave of errands which had been patiently waiting for my return at work, I heroically managed to dig out of the ArXiv a paper worth a close look.
Back from vacations, I found the usual pile of errands, tons of unattended emails, papers to review to take care of at work. I got home pretty tired tonight, and I was more than else looking for some relaxation when I logged on the Internet Chess Club for a couple of blitz chess games. Instead, I found some fulfilment by winning a short game with the black pieces. White was International Master Vladimir Barskij, Fide ELO 2419 in the current list, number 2273 in the world. Not a top chess player, but one of those I sometimes have a chance of beating.
The figure shown below represents the best measurement of the top quark mass ever obtained by a single experiment, and it is a determination with a less than 1% total uncertainty. It has been approved last week by the CDF experiment at Fermilab.

The CDF experiments collects proton-antiproton collisions delivered by the Tevatron collider, which imparts the projectiles with 1 TeV of energy each, for a center-of-mass energy of 2 TeV. This is still the highest energy ever achieved by a collider, although the record is going to be soon stripped off Fermilab by the Large Hadron Collider, which is due to start colliding protons with other protons at 7 TeV of energy this coming fall.