LHC experiments present their latest results at Europhysics conference

The first of the major summer conferences for particle physics opens today in Grenoble. All of the Large Hadron Collider experiments will be presenting results, and a press conference is scheduled for Monday 25 July. The conference follows an extremely successful start to LHC running in 2011, and results are eagerly awaited.

"So far we've collected as much data as was planned for the whole of 2011 and that's already a great achievement for the LHC," said CERN Director General Rolf Heuer. "While it's still too early for the biggest discoveries, the experiments are already accumulating interesting results."

The LHC experiments will present measurements with increased precision on known processes of the current model of particle physics, the Standard Model. They will also provide new measurements and limits on sought-after phenomena and particles, such as the .

"Discovery or exclusion of the Higgs particle, as predicted by the Standard Model, is getting ever closer," said CERN's Director for Research and , Sergio Bertolucci. "Both occurrences will be great news for physics, the former allowing us to start the detailed study of the Higgs particle, the latter being the first proof of the incompleteness of the Standard Model, requiring new phenomena to be happening within the reach of the LHC."

The speed with which the experiments have been able to analyze the data is unprecedented. The Worldwide LHC Computing Grid, which links up computer centers around the world, has proved itself well up to the task, routinely processing up to 200,000 physics analysis jobs concurrently.

"With the data we have analyzed already, and building on our extensive measurements of Standard Model processes, we are beginning to explore much of the available mass range for the Higgs and many scenarios of new physics", said ATLAS spokesperson Fabiola Gianotti.

"We're taking our first steps in this new physics landscape," underlined Guido Tonelli, spokesperson of the CMS experiment, "and it is great to see how fast we are producing new results. I am confident that soon there will be only a few regions left where the Higgs boson, as postulated by the Standard Model, might still be hiding."

Among the announcements to be expected at the conference are reports from the LHC collaborations on intriguing observations by the CDF and D0 experiments at Fermilab in the US. For instance, in the realm of b-quark decays, the D0 experiment has observed a difference in the behavior of matter and antimatter, while CDF very recently announced measurements of a rare process that appear to disagree with the and could indicate new physics.

"The LHC experiments are getting closer and closer to pinning down whether these are real signals or not," said LHCb spokesperson Pierluigi Campana. "In particular, LHCb is now surpassing the sensitivity of previous experiments on some key measurements in b-quark physics and is rapidly closing in on others."

These first results are just the beginning, with much more to come. Discovery in particle physics is often a long and painstaking process, requiring large quantities of data to be carefully sifted for rare processes. The LHC data target for 2011-2012 was chosen to allow the experiments to explore new physics accessible to the LHC at its current operating energy of 3.5 TeV per beam. So far a tenth of this total amount of data has been collected.

The conference begins today with parallel sessions that run through the weekend, to be followed by plenary sessions starting on Monday. At 13:30 CEST on Monday 25 July a press conference will be held at which: Fabio Zwirner, Chair of the High Energy Physics Division of EPS (European Physical Society), will announce the European Physical Society's 2011 high-energy physics prizes; CERN's Director General, Rolf Heuer, will discuss the latest results from the LHC; President of Council, Michel Spiro, will talk about European strategy for particle physics; and Stavros Katsanevas, the Deputy Director of the French national institute for nuclear and (IN2P3) of CNRS, will present the latest advances in astroparticle physics in Europe.

To follow the Press Conference, or for more information: www2.cnrs.fr/en/1879.htm

For information about the Europhysics conference on high energy physics: eps-hep2011.eu/

Webcast link: webcast.in2p3.fr/live/HEP2011

Explore further

Large Hadron Collider achieves 2011 data milestone

Provided by CERN
Citation: LHC experiments present their latest results at Europhysics conference (2011, July 21) retrieved 20 September 2019 from https://phys.org/news/2011-07-lhc-latest-results-europhysics-conference.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Feedback to editors

User comments

Jul 21, 2011
So once they find the god particle all they'll have to do is destroy it and atheism will win.

Jul 21, 2011
Actually I think you have to kill the head zombie (Jesus).

Jul 22, 2011
The only religion close to destruction is SUSI.

Jul 22, 2011
..and SUSY is even closer to its refusal...;-)
The problem IMO isn't with this theory though, but in the experimental limits of its observation. In my theory the Universe appears like the landscape under haze and the artefacts, which are lying at its observability boundary (no matter, whether it's at Planck or cosmological scales) will appear more fuzzy and negligible, then they really are.

The analogous situation is with Higgs boson theory. You can imagine it like the attempt for observation of density fluctuations at the surface of water from large distance. The same density fluctuations, which we are trying to observe, blur the remote image of these fluctuations... Analogously, the remote galaxies will appear like fuzzy cloudy blobs, whereas from smaller distance they would appear like quite normal, well developed galaxies.

Jul 22, 2011
The idea, that the Universe appears more uniforms and differentiated from proximity, than from distance is IMO the manifestation of multiverse concept, which is often predicted with the same string theorists, who are developing SUSY models at the same model....

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more