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Turning 60

Strange how time goes by. And strange I would say that, since I know time does not flow, it is...

On The Illusion Of Time And The Strange Economy Of Existence

I recently listened again to Richard Feynman explaining why the flowing of time is probably an...

RIP - Hans Jensen

Today I was saddened to hear of the passing of Hans Jensen, a physicist and former colleague in...

2026 Plans

This year opened in slow motion for me, at least work-wise. I have been on parental leave since...

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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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Today's visit to the Cornell Arxiv, the repository where scientific papers on physics, astrophysics, mathematics, and a few other disciplines are made publically accessible before getting published on paper, was a productive one. Some casual browsing allowed me to learn a few random things on topics I know little or nothing about; but what really made my day was reading study by a few distinguished theorists (Vernon Barger, Wai-Yee Keung, and Brian Yencho), who considered a collider signature I had been fantasizing about in the past.
"Blondes make the best victims. They're like virgin snow that shows up the bloody footprints."

Alfred Hitchcock
Note to self. The list of countries to avoid visiting grows in 2010 with the entry of Ireland, a green country where people speak with a funny accent and drink good spirits. These are not at all reasons to avoid a visit. Instead, I find it sufficient the new law in force since January 1st against blasphemy. The law condemns the publishing or expression of content offensive or insulting religions (not just the Catholic one) with fines up to 25,000 euros.
After re-emerging from a rather debilitating new years' eve banquet, I feel I can provide my own answers to the second batch of physics questions I proposed a few days ago to the most active readers of this column.

Be sure about one thing: the answers to the three questions have already been given in some form by a few of the readers in the comments thread; I will nonetheless provide my own explanations, and in so doing I might pick a graph or two to illustrate better the essence of the problems. But first, there was a bonus question included in the package, and nobody found the solution to it. Here is the bonus question again:

"What do you get if you put together three sexy red quarks ?"

The answer is
Rather than writing down my new year's resolution, I find it more constructive to look back at the past year and draw some conclusions on it. I have already done some analysis concerning this blog in a recent post; this one is a more personal view of what happened to me in 2009, and you might well consider it not interesting at all for you -but it is my blog, and it belongs here.

So, let me start with my family. In 2009 neither I, nor my wife or my children, had any major health problem. That is for sure an important thing of which I consider myself quite lucky. Heck, I did not even have to run to the emergency room once! (If you have small kids you know this does happen).
No, not a modification of the now classic "Say of the week" series. Rather, a quote from a very famous Physical Review article which is of relevance to a couple of questions I offered here and here this week: