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New Results From The LHC At 13 TeV!

Well, as some of you may have heard, the restart of the LHC has not been as smooth as we had hoped...

Marek Karliner: Not A Pentaquark, But A Molecule - As He And Rosner Predicted

The reported observation of a resonant state of a J/psi meson and a proton in the decay of the...

Pentaquarks Claimed By LHCb

The CERN Director General Rolf Heuer issued the following statement today, reporting the discovery...

How To Search For Higgs Boson Pairs ? A Phenomenological Paper From Yours Truly

Working as an experimental particle physicist in a large scientific collaboration, such as the...

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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 »

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After the issuing of new top mass results by the Tevatron experiments, it is time for another look at global electroweak fits of standard model observables. The Gfitter group has produced new fits for the standard model in search of the most probable value of the Higgs boson mass, given the new measurements of top quark mass and other quantities, and the huge amount of existing information on sensitive observables from the standard model.

Unfortunately, I could find no update including the new Higgs search results yet. I guess such a fit will be ready in a few weeks... But the new released information is already interesting enough that we may meaningfully spend a few words around some figures here.
While the focus of the international conference in high-energy physics in Paris last week has been on the search for new physics and the precise measurement of standard model quantities, I will offer to you today something more technical, but in no way less physics-rich; it was presented in Paris, but with the many parallel sessions it may have well gone unnoticed... What I wish to explain to you is the procedure by means of which the CMS experiments calibrates the scale and resolution of its charged particle momentum measurement.
While everybody is busy discussing the latest Tevatron results on the Higgs boson searches -is that the light-mass excess the internet was abuzz, is it consistent with a signal as we expected it, how long will it take to confirm it is not a fluke, etcetera, etcetera, etcetera- I think I have a different plot with which to enthuse you.

If you do not like the figure below, courtesy CMS Collaboration 2010, you are kindly requested to leave this blog and spend your time reading something else than fundamental physics. I do not know what will ever make you believe particle physics is beautiful, if not what is shown here.


The parallel sessions at the international conference on High-Energy Physics in Paris are over, and it is time for a summary of results. Of course if you are following the conference you will get it from the summary talks, but if you prefer some armchair, remote attendance of the conference, I have collected for you a few meaningful plots.

Here I wish to assemble some of the electroweak physics results produced by CMS in time for ICHEP. The CMS experiment has shown results that use up to 280 inverse nanobarns of proton-proton collisions, but for electroweak measurements -those involving W and Z signals, to be clear- the statistics used is up to 200 inverse nanobarns of well-understood data.
Ashay Dharwadker
is the founder and director of the Institute of Mathematics, Gurgaon, India.
He is interested in fundamental research in mathematics, particularly in algebra, topology, graph theory and their applications to computer science and high energy physics. Based upon the new proof of the four color theorem, he has developed a grand unified theory for the Standard Model and gravitation. In particular, this leads to a mathematically precise prediction of the Higgs boson mass.
Just a note here because I figured it is not clear - I am on vacation these days and, while I continue to post at a regular frequency, I am much more erratic than usual with answering comments in the threads. I would like this to be clear, because I usually do make a point of answering all comments that lend themselves to be answered.

With a slow connection and the need to spend as much time as possible swimming  in the blue waters of Elafonisos, this is bound to be a side effect. I will be back in regular blogging mood by August 10th.