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On Rating Universities

In a world where we live hostages of advertisement, where our email addresses and phone numbers...

Goodbye Peter Higgs, And Thanks For The Boson

Peter Higgs passed away yesterday, at the age of 94. The scottish physicist, a winner of the 2013...

Significance Of Counting Experiments With Background Uncertainty

In the course of Statistics for Data Analysis I give every spring to PhD students in Physics I...

The Analogy: A Powerful Instrument For Physics Outreach

About a month ago I was contacted by a colleague who invited me to write a piece on the topic of...

Tommaso Dorigo

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 »

CMS Sees No Gluinos - But Will Keep Looking

Jul 18 2011 | comment(s)

Blogging from the whereabouts of one of the most beautiful places of the Mediterranean, Balos Beach (see picture), I wish to draw your attention today to one fun search that CMS produced on data collected in 2010: the one for gluinos in events with six jets.

Diakopes

Jul 16 2011 | comment(s)

In the beautiful hideout of Falassarna, Crete (see below), I am blogging today from the terrace of my hotel room, overlooking a wonderful beach. Although still "connected" and in touch with the happenings at CERN and Fermilab, I am for once in a detached, pensive mood, as I ponder over the status of HEP in this hot summer of 2011. So let me just assemble some thoughts below. Summer conferences are at our doors, but I will miss them.... I prefer to think at what we'll see at the next winter conferences!

First Dimuon Decays Of B_s Mesons Observed By CDF ?

Jul 13 2011 | comment(s)

I was waiting for the announcement in the Fermilab seminar of next Friday, but apparently despite I am still a member I am not well enough informed of what happens inside CDF, the experiment at the Tevatron proton-antiproton collider of Fermilab. So the paper is now public, and you can read the news in the Cornell arxiv: CDF sees an excess of muon pairs which is compatible with originating from the decay of B_s mesons.

New CMS Constraints On SUSY

Jul 11 2011 | comment(s)

While other sources (voluntarily not linked here, to avoid pissing off my collaborators) choose to be "on the news" these days, with a brand new exclusion plot of the Higgs boson obtained using almost one full inverse femtobarn of collisions which is not yet public but was made accessible by mistake on a Fermilab site, I will meekly point you out today to another result, which is by all means public and freely reproducible here (no reproach to Phil intended here -he acted in good faith and the fault is not his).

Guess The Plot 5

Jul 07 2011 | comment(s)

This instance of my "guess the plot" contest will be hopefully raising fewer controversies than the former one. You are asked to explain what the figure represents, possibly guessing the units on the x and y axes.

More advanced readers may know at a glance what this plot is and where it comes from. To them, I ask the favour to wait one day (to not spoil the game to the less knowledgeable users) before trying a harder challenge: by heart, explain the meaning of every single distribution shown -e.g. provide the correct key of the masked legend on the right.

DZERO Charge Asymmetry Grows To 3.9 Standard Deviations

Jul 04 2011 | comment(s)

The DZERO collaboration has just produced an update of their analysis of the dimuon charge asymmetry using 9.0 inverse femtobarns of proton-antiproton collisions. The new result confirms the previously reported effect, raising the discrepancy with the Standard Model prediction to over four standard deviations.