Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Evidence Strengthens Case That Scientists Have Discovered a Higgs Boson

18.03.2013
The following news release is being issued jointly by the U.S. Department of Energy's Brookhaven National Laboratory and Fermi National Accelerator Laboratory on behalf of the U.S. LHC organization (http://www.uslhc.us/).

It describes the latest results from two experiments at the Large Hadron Collider (LHC) at CERN that are searching for signs of the Higgs boson, a subatomic particle postulated by the Standard Model of particle physics as the source of mass for other particles.


Image courtesy CERN.

A typical candidate event including two high-energy photons whose energy (depicted by red towers) is measured in the CMS electromagnetic calorimeter. The yellow lines are the measured tracks of other particles produced in the collision. The pale blue volume shows the CMS crystal calorimeter barrel.

For more information about Brookhaven's role in the Higgs search and work on the LHC's ATLAS experiment see the Brookhaven ATLAS website (http://www.bnl.gov/atlas/) and this press release (http://www.bnl.gov/newsroom/news.php?a=11432).

Brookhaven Lab Media Contact:
Peter Genzer, genzer@bnl.gov, (631) 344-3174
New evidence strengthens case that scientists have discovered a Higgs boson
The new particle discovered at experiments at the Large Hadron Collider last summer is looking more like a Higgs boson than ever before, according to results announced today.

On July 4, physicists on the CMS and ATLAS experiments announced the discovery of a particle with a close resemblance to a Higgs, a particle thought to give mass to other elementary particles. The discovery of such a particle could finish a job almost five decades in the making: It could confirm the last remaining piece of the Standard Model of particle physics, a menu of the smallest particles and forces that make up the universe and how they interact.

Although scientists will need to analyze substantially more data before they can conclusively declare the new particle is the Standard Model Higgs boson, results announced today at the Rencontres de Moriond conference in La Thuile, Italy, bolster scientists' confidence that the particle they discovered is the Standard Model Higgs.

"Clear evidence that the new particle is the Standard Model Higgs boson still would not complete our understanding of the universe," said Patty McBride, head of the CMS Center at Fermilab. "We still wouldn't understand why gravity is so weak and we would have the mysteries of dark matter to confront. But it is satisfying to come a step closer to validating a 48-year-old theory."

Researchers look for the Higgs boson at the LHC by accelerating protons to high energies and crashing them into one another. The energy of those colliding protons can briefly convert into mass, bringing into being heavier particles such as the Higgs bosons. The heavy particles are unstable and decay almost immediately into pairs of less massive particles.

Scientists have specific predictions for how often a Standard Model Higgs boson of a certain mass will decay into different patterns of particles. The latest results indicate that the new particle is sticking to the Standard Model's script.

The ATLAS and CMS collaborations have analyzed two and a half times more data than was available for the discovery announcement in July, and, in their preliminary results, they find that the new particle is looking more and more like a Higgs boson.

"When we discovered the particle, we knew we found something significant," ATLAS scientist and New York University professor Kyle Cranmer said. "Now, we're just trying to establish the properties."

The analysis included the data from about 500 trillion proton-proton collisions collected in 2011 and from about 1,500 trillion collisions in 2012. The LHC stopped operation on Feb. 16, for two years of maintenance and upgrades, but researchers will continue to study the data collected before the shutdown.

Hundreds of scientists and students from American institutions have played important roles in the search for the Higgs at the LHC. Fermi National Accelerator Laboratory and Brookhaven National Laboratory host the U.S. contingents of the CMS and ATLAS experiments, respectively. More than 1,700 people from U.S. institutions-including 89 American universities and seven U.S. Department of Energy (DOE) national laboratories-helped design, build and operate the LHC accelerator and its four particle detectors. The United States, through DOE's Office of Science and the National Science Foundation, provides support for research, detector operations, and upgrades at the LHC, as well as supplies computing for the ATLAS and CMS experiments.

The vast majority of U.S. scientists participate in the LHC experiments from their home institutions, remotely accessing and analyzing the data through high-capacity networks and grid computing. Working collaboratively, these international organizations are able to analyze an incredible amount of data.

After further analysis, scientists will be able to say whether this new particle is the Standard Model Higgs boson or something more surprising.

Background

Information about the US participation in the LHC is available at http://www.uslhc.us. Follow @USLHC on Twitter.

Fermilab is America's premier national laboratory for particle physics research. A U.S. Department of Energy Office of Science laboratory, Fermilab is located near Chicago, Illinois and operated under contract by the Fermi Research Alliance, LLC. Visit Fermilab's website (http://www.fnal.gov/) and follow us on Twitter at @FermilabToday.

Brookhaven National Laboratory is operated and managed for DOE's Office of Science by Brookhaven Science Associates. Visit Brookhaven Lab's electronic newsroom (http://www.bnl.gov/newsroom/) for links, news archives, graphics, and more.

The DOE Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit http://science.energy.gov.

The National Science Foundation focuses its LHC support on funding the activities of U.S. university scientists and students on the ATLAS, CMS and LHCb detectors, as well as promoting the development of advanced computing innovations essential to address the data challenges posed by the LHC. For more information, please visit http://www.nsf.gov/.

CERN, the European Organization for Nuclear Research, is the world's leading laboratory for particle physics. It has its headquarters in Geneva, Switzerland. At present, its Member States are Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, the Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Romania is a candidate for accession. Israel and Serbia are Associate Members in the pre-stage to Membership. India, Japan, the Russian Federation, the United States of America, Turkey, the European Commission and UNESCO have Observer status.

Fact sheets, images, graphics and videos

Illustration: Standard Model particles

Med res illustration (http://www-visualmedia.fnal.gov/VMS_Site/gallery/stillphotos/2005/0400/05-0440-01D.jpg)

High res illustration (http://www-visualmedia.fnal.gov/VMS_Site/gallery/stillphotos/2005/0400/05-0440-01D.hr.jpg)

Photo: Remote Operations Center at Fermilab

Med res photo http://www-visualmedia.fnal.gov/VMS_Site/gallery/stillphotos/2011/0000/11-0009-08D.jpg)

High res photo (http://www-visualmedia.fnal.gov/VMS_Site/gallery/stillphotos/2011/0000/11-0009-08D.hr.jpg)

Videos

What is a Higgs boson? (http://www.youtube.com/user/fermilab?v=RIg1Vh7uPyw&lr=1)

How do we search for Higgs bosons? (http://www.youtube.com/user/fermilab?v=1GrqMCz_vnA&lr=1)

Fact sheet: Frequently Asked Questions about the Higgs boson (http://www.fnal.gov/pub/presspass/press_releases/2012/files/Higgs_Boson_FAQ_July2012.pdf)

Definitions of important terms (http://www.symmetrymagazine.org/category/explain-it-in-60-seconds)

Photos in the CERN photo archive (https://cdsweb.cern.ch/search?cc=Press+Office+Photo+Selection&rg=100&of=hpm&p=internalnote%3A%22Higgs%22&sf=year&so=d)

Peter Genzer | Newswise
Further information:
http://www.bnl.gov

More articles from Physics and Astronomy:

nachricht Applicability of dynamic facilitation theory to binary hard disk systems
08.12.2016 | Nagoya Institute of Technology

nachricht Will Earth still exist 5 billion years from now?
08.12.2016 | KU Leuven

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>