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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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I received an interesting question today from an Alex Ziller in the comments thread of a recent post. Here it is:

Do you think blogging actually improves Science? (I know, one should first define what "improving Science" actually means).

I think this matter has been debated elsewhere not too long ago -where by "elsewhere" I mean "some site I sometimes visit, can't recall where". Nevertheless, I consider it a crucial question to ask, and one with several facets. Here is my short answer to Alex -of the kind of depth a comments thread is worth:
"It is better to treat p values as nothing more than useful exploratory tools or measures of surprise. In any search for new physics,  a small p value should only be seen as a first step in the interpretation of the data, to be followed by a serious investigation of an alternative hypothesis. Only by showing that the latter provides a better explanation of the observations than the null hypothesis can one make a convincing case for a discovery."

Luc Demortier, "p values and nuisance parameters", CERN-08-001, p.24.
Sometimes I forget that my time constraints force me to make a choice between writing on my blog and reading other people's, and so I start reading random stuff in physics blogs I am acquainted with, to then find myself listlessly drifting from a site to the next in a uninterrupted chain, often circular. It is a walk on the wild side, fortunately a typically short one.
A few days ago I produced a summary of a poster I presented at Physics in Collisions this week, which dealt with the searches for the Standard Model Higgs boson that CMS will undertake, and the results it can obtain in a scenario when a certain amount of data is collected at the full design energy of the LHC.

Here, instead, I wish to summarize the other poster I presented at the same venue, which concerned the combination of the most sensitive search channels, the sensitivity of CMS with a given amount of data, and the derating of its significance reach or observation power entailed by the running of LHC at a smaller-than-design beam energy. But I will do this only as a way of introducing a more interesting discussion, as you will see below.
The Physics in Collisions conference in Kobe is over, and I am packing up. Tomorrow morning I will leave from KIX to FRA, and later FRA to VCE, hopefully making it home for dinner.

I learned a few interesting things on physics at the conference, and I hope I will share some of the highlights with you in a post tomorrow. But I also learned quite a few things about Japanese culture, which probably was a more valuable experience for me.

For now, I will just offer you the picture below, which portrays a rather overaged student in front of his two posters. Regulars of this site will not fail to notice that despite the suit (jacket not shown), I am wearing a Scientific Blogging shirt (blue logo near the pocket).
This morning I attended the first session of the Physics in Collisions conference in Kobe, which dealt with Electroweak Physics. The four talks I could listen to were all of very good quality, and I am not ashamed to say that I did learn a thing or two, despite this is a field of investigations on which I have focused for over a decade. Also, I decided that conferences featuring few, long talks are definitely better than ones which try to cram dozens of small contributions in tight schedules: at least, the session conveners are not required to play the watchdog and struggle to keep people within their allotted time, and post-talk questions and comments are actually encouraged rather than suppressed.