Featured Research

from universities, journals, and other organizations

Tantalizing Hints Of Quark Gluon Plasma Found At CERN

Date:
February 10, 2000
Source:
Brookhaven National Laboratory
Summary:
CERN, the European laboratory for particle physics, located in Switzerland, has just made public results of its five-year program of heavy-ion collision experiments that hint at the formation of a new state of matter -- a quark-gluon plasma.

CERN, the European laboratory for particle physics, located in Switzerland, has just made public results of its five-year program of heavy-ion collision experiments that hint at the formation of a quark-gluon plasma. Has CERN scooped the Relativistic Heavy Ion Collider (RHIC), which is expected to begin heavy-ion experiments at the U.S. Department of Energy's Brookhaven National Laboratory this year? The answer is no.

Related Articles


CERN states that their evidence is "circumstantial." But their results do generate confidence that a quark-gluon plasma may be directly observed for the first time when RHIC achieves full operational status.

The experiments at CERN are the highest-energy, man-made, heavy-ion collisions yet achieved. A similar round of experiments at somewhat lower energy was carried out with gold ion beams at Brookhaven's Alternating Gradient Synchrotron (AGS) in 1993. The temperatures and densities in these CERN and AGS collisions approach the extreme values at which theories predict quark-gluon plasma may form. And many of the observations from the seven experiments at CERN are consistent with the predicted signatures of a quark-gluon plasma.

Analyzed independently, none of the CERN experiments is definitive. But taken together, they provide circumstantial evidence that quark-gluon plasma may have been produced.

Direct measurements, such as detecting electromagnetic signals from a quark-gluon plasma, will only be possible at the much higher collision energies that will be achieved at RHIC and, later, at CERN's Large Hadron Collider. The RHIC experiments will be more than ten times more powerful than those at CERN. The higher temperatures achieved in RHIC's collisions will allow the quark-gluon plasma to linger long enough for the kinds of direct observations that are not possible with the CERN experiments.

The CERN results are quite encouraging, says Tom Ludlam, Brookhaven's Deputy Associate Director for High-Energy and Nuclear Physics. "These results set the stage for the definitive round of experiments at RHIC in which the quark-gluon plasma will be directly observed, opening up a vast landscape for discovery regarding the nature and origins of matter."

Brookhaven's Director John Marburger congratulated CERN scientists on their achievement, stating that "piecing together even this indirect evidence of the quark-gluon plasma is a tour de force. The CERN teams have pressed their capabilities to the limit to extract these tantalizing glimpses into a new domain of matter."

For CERN's announcement, see http://www.cern.ch/CERN/Announcements/2000/NewStateMatter.

The U.S. Department of Energy's Brookhaven National Laboratory creates and operates major facilities available to university, industrial and government personnel for basic and applied research in the physical, biomedical and environmental sciences, and in selected energy technologies. The Laboratory is operated by Brookhaven Science Associates, a not-for-profit research management company, under contract with the U.S. Department of Energy.


Story Source:

The above story is based on materials provided by Brookhaven National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Brookhaven National Laboratory. "Tantalizing Hints Of Quark Gluon Plasma Found At CERN." ScienceDaily. ScienceDaily, 10 February 2000. <www.sciencedaily.com/releases/2000/02/000209215728.htm>.
Brookhaven National Laboratory. (2000, February 10). Tantalizing Hints Of Quark Gluon Plasma Found At CERN. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2000/02/000209215728.htm
Brookhaven National Laboratory. "Tantalizing Hints Of Quark Gluon Plasma Found At CERN." ScienceDaily. www.sciencedaily.com/releases/2000/02/000209215728.htm (accessed March 27, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, March 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Inspectors Found Faulty Work Before NYC Blast

Inspectors Found Faulty Work Before NYC Blast

AP (Mar. 27, 2015) An hour before an apparent gas explosion sent flames soaring and debris flying at a Manhattan apartment building, injuring 19 people, utility company inspectors decided the work being done there was faulty. (March 27) Video provided by AP
Powered by NewsLook.com
Facebook Building Plane-Sized Drones For Global Internet

Facebook Building Plane-Sized Drones For Global Internet

Newsy (Mar. 27, 2015) Facebook on Thursday revealed more details about its Internet-connected drone project. The drone is bigger than a 737, but lighter than a car. Video provided by Newsy
Powered by NewsLook.com
Robot Returns from International Space Station and Sets Two Guinness World Records

Robot Returns from International Space Station and Sets Two Guinness World Records

Reuters - Light News Video Online (Mar. 27, 2015) The companion robot "Kirobo" returns to earth from the International Space Station and sets two Guinness World Records. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Residents Witness Building Explosion, Collapse

Residents Witness Building Explosion, Collapse

AP (Mar. 26, 2015) Witnesses recount the sites and sounds of a massive explosion and subsequent building collapse in the heart of Manhattan&apos;s trendy East Village on Thursday. (March 26) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins