FYI
--
Best regards,
Frank
Frank E. Taylor
CERN MIT
ATLAS Collaboration Bldg. 26 - Rm 569
188-3-015 77 Mass. Ave.
Route de Meyrin 385, CH-1211 Geneva 23 Cambridge, MA 02139
Switzerland USA
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web: http://www2.lns.mit.edu/~fet/atlas_mit.html
---------- Forwarded message ----------
Date: Thu, 21 Jul 2011 09:53:39 +0000
From: Rolf Heuer <[log in to unmask]>
To: "cern-personnel (CERN Personnel - Members and Associate Members)"
<[log in to unmask]>
Subject: [iso-8859-1] CERN Press Release: LHC experiments present their
latest r[iso-8859-1] esults at Europhysics Conference - Communiqué de
Presse [iso-8859-1] du CERN: Les expériences LHC présentent leurs
derniers[iso-8859-1] résultats lors de la conférence Europhysics
Version française ci-dessous.
LHC experiments present their latest results at Europhysics Conference on
High Energy Physics
Geneva, 21 July 2011. The first of the major summer conferences for
particle physics opens today in Grenoble. All of the LHC 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 Higgs boson.
"Discovery or exclusion of the Higgs particle, as predicted by the
Standard Model, is getting ever closer," said CERN's Director for Research
and Scientific Computing, 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 analyse the data is
unprecedented. The Worldwide LHC Computing Grid, which links up computer
centres 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 analysed 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 behaviour of
matter and antimatter, while CDF very recently announced measurements of a
rare process that appear to disagree with the Standard Model 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 CERN 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 particle physics (IN2P3) of CNRS, will present the latest
advances in astroparticle physics in Europe.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
