Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Wallflowers become extroverts in a crowd

Abstract:
While it's long been said that two's company and three's a crowd, that's just how mesons like it. A recent experiment at DOE's Jefferson Lab demonstrates that these subatomic particles engage more with other particles when in a crowd.

Wallflowers become extroverts in a crowd

Posted on October 1st, 2010

One of the simplest ways to study subatomic particles is to scatter a highly energetic beam of particles off a single proton. However, the reality is a little messier. Most nuclear physics experiments produce new particles inside nuclei, which contain many protons and neutrons. A nucleus presents far more crowded conditions: new particles are surrounded by the nucleus' protons and neutrons, and their quarks and gluons.

Physicists conducted an experiment to measure how easy or difficult it is for a particle to travel through the crowded conditions of different nuclei, their so-called nuclear transparency. In the experiment, energetic photons were beamed into the nuclei of five targets: deuterium, carbon, titanium, iron and lead. Two types of mesons, omega and phi, were produced as the photons smacked into the nucleus. Just like protons and neutrons, omega and phi mesons are built of quarks.

The experimenters found that the more protons and neutrons in the nucleus, the fewer omega and phi mesons made it out. Hence, in terms of nuclear transparency, the nucleus becomes less transparent to mesons as its numbers of protons and neutrons increase.

The new paper (*) featuring the result was published in the September 10 issue of Physical Review Letters.

(*) prl.aps.org/abstract/PRL/v105/i11/e112301

####

For more information, please click here

Contacts:
Kandice Carter
757.269.7263

Copyright © DOE Pulse

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

A nanoscale wireless communication system via plasmonic antennas: Greater control affords 'in-plane' transmission of waves at or near visible light August 27th, 2016

Forces of nature: Interview with microscopy innovators Gerd Binnig and Christoph Gerber August 26th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

Physics

Graphene under pressure August 26th, 2016

Silicon nanoparticles trained to juggle light: Research findings prove the capabilities of silicon nanoparticles for flexible data processing in optical communication systems August 25th, 2016

New approach to determining how atoms are arranged in materials August 25th, 2016

Discoveries

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

Nanofur for oil spill cleanup: Materials researchers learn from aquatic ferns: Hairy plant leaves are highly oil-absorbing / publication in bioinspiration & biomimetics / video on absorption capacity August 25th, 2016

Unraveling the crystal structure of a -70 Celsius superconductor, a world first: Significant advancement in the realization of room-temperature superconductors August 25th, 2016

Announcements

A nanoscale wireless communication system via plasmonic antennas: Greater control affords 'in-plane' transmission of waves at or near visible light August 27th, 2016

Forces of nature: Interview with microscopy innovators Gerd Binnig and Christoph Gerber August 26th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic