Banner
Is The X(5568) A True Resonance ?

The DZERO collaboration published earlier this year a search for resonances decaying to pairs...

The Five Stages Of A Dying Theory

I am told that when a patient is diagnosed with a terminal illness, he or she will likely go through...

Anomaly! Book Presentation At CERN On November 29

The book "Anomaly! Collider physics and the quest for new phenomena at Fermilab" is about to be...

Vector Boson Scattering: ATLAS Tests SM Unitarity

A new paper by the ATLAS collaboration at the CERN Large Hadron Collider produces results in good...

User picture.
picture for Hank Campbellpicture for Sascha Vongehrpicture for Bente Lilja Byepicture for Johannes Koelmanpicture for Heidi Hendersonpicture for Georg von Hippel
Tommaso DorigoRSS Feed of this column.

I am an experimental particle physicist working with the CMS experiment at CERN. In my spare time I play chess, abuse the piano, and aim my dobson telescope at faint galaxies.... Read More »

Blogroll
Worth mentioning because of its irrelevance: that's my other choice for a post which points out a new preprint by H.Nielsen, the Danish physicist who became famous by hypothesizing that the future was influencing the past in order to prevent us from discovering the Higgs boson.
Spring is my favourite season in Batavia, watching peaks blossom in every distribution... A comment by Lubos Motl (in the thread of a post of mine on Higgs searches in ZZ decay modes) alerted me of a new result by the DZERO collaboration, where a significant (2.5 standard deviations) fluctuation of the data in the mass distribution of t-prime quarks makes its ephemeral appearance. Lubos already covered it in his blog.
It was bound to happen, and well predicted in advance, but it still feels good to report it here. The LHC last night exceeded by a good 15% the previous record instataneous luminosity for hadron collider beams, previously held by the Tevatron collider at 4.024x10^32 cm^-2 s^-1. The new record (soon to be surpassed by the LHC itself, anyway) is now 4.67x10^32.
Note: updated list of links at the bottom.

(Older Note:
Bet on this signal! See at the bottom of the article! Odds are two to one in your favour now!)

(Older note
: Update at the bottom.)

It seems I am late on this one -an internal note by the Atlas collaboration seems to contain the discovery of a bump in the diphoton mass distribution from data collected in 2010 and 2011. They find a signal that seems consistent, in mass and resolution, with what one would expect from a Higgs decay, if the Higgs were sitting at 115 GeV, the value at which LEP II found some hint (a 1.7 standard deviation signal) before being shut down in 2001.
That's because you never learn anything new.

[By the way: if you were coming here to learn the solution of my riddle about the mysterious plot I posted here yesterday, be patient - I will publish an answer tomorrow on that issue.]
After the disturbance created by the Higgs rumour in ATLAS, I think we can go back to normal business - in this case, keeping my word on discussing things that were left hanging.

Your response to my small riddle was quite good, forcing me to provide a timely and exhaustive explanation of what is in the plot I posted a few days ago.