Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




TIME AND SPACE
High-energy physicists predict new family of four-quark objects
by Staff Writers
Manoa HI (SPX) Nov 14, 2013


The peak is evidence for Zc(4020) decaying to p+/-hC. Credit: BESIII Collaboration.

An international team of high-energy physicists says the discovery of an electrically charged subatomic particle called Zc(4020) is a sign that they have begun to unveil a whole new family of four-quark objects.

The Beijing Spectrometer (BESIII) collaboration, which includes scientists from the University of Hawaii at Manoa, previously announced the discovery of a mysterious four-quark particle called Zc(3900) in April 2013.

"While quarks have long been known to bind together in groups of twos or threes, these new results seem to be quickly opening the door to a previously elusive type of four-quark matter," said Frederick Harris, a professor of physics and astronomy at UH Manoa, and a spokesman for the BESIII experiment.

"The unique data sample collected by the BESIII collaboration has continued to yield a stream of clues about the nature of multi-quark objects."

The recent breakthroughs by the BESIII collaboration have come about through a dedicated study of the byproducts of the anomalous Y(4260) particle.

Using the Beijing Electron Positron Collider (BEPCII) in China, scientists tuned the energy at which electrons and positrons annihilate matter to 4260 MeV, which corresponds to the mass of the Y(4260) particle. The BESIII Collaboration used this method to directly produce and collect large samples of the particle's byproducts, or decays.

This experimental method allowed the BESIII collaboration to first observe the Zc(3900) and then the Zc(4020). Also recently spotted in the decays is the electrically neutral X(3872), a particle that has been experimentally established for more than 10 years, and has long been suspected to be a four-quark object.

"The year 2013 has so far been an exciting one for the BESIII experiment," Harris said.

"Using decays of the Y(4260), a family of four-quark objects has begun to appear. While the theoretical picture remains to be finalized, more and more clues are suggesting that we are witnessing new forms of matter. And while a new 'zoo' of mysterious particles is emerging, it seems a new classification system may soon be at hand to understand it."

.


Related Links
University of Hawaii at Manoa
Understanding Time and Space






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





TIME AND SPACE
Quantum reality more complex than previously thought
Warsaw, Poland (SPX) Nov 5, 2013
Imagine you order a delivery of several glass vases in different colors. Each vase is sent as a separate parcel. What would you think of the courier if the parcels arrive apparently undamaged, yet when you open them, it turns out that all the red vases are intact and all the green ones are smashed to pieces? Physicists from the University of Warsaw and the Gdansk University of Technology h ... read more


TIME AND SPACE
NASA's GRAIL Mission Puts a New Face on the Moon

Moon mission yields clues to face of 'man in the moon'

Shanghai-built lunar rover set for lunar landing

Crowdfunded Lunar Spacecraft Reaches Funding Milestone

TIME AND SPACE
Mars Rover Teams Dub Sites in Memory of Bruce Murray

LeVar Burton Shares MAVEN's Story in a New NASA PSA

Martian moon samples will have bits of Mars

NASA release 'tour' of ancient, wet Mars as YouTube video

TIME AND SPACE
Astronauts Next As NASA Hails Commercial ISS Resupply Program Success

NASA says new deep space vehicle on time for 2014 test

NASA's Orion Sees Flawless Fairing Separation in Second Test

Lockheed Martin Team Tests Orion's Protective Panels

TIME AND SPACE
China shows off moon rover model before space launch

China providing space training

China launches experimental satellite Shijian-16

China Moon Rover A New Opportunity To Explore Our Nearest Neighbor

TIME AND SPACE
Russians take Olympic torch on historic spacewalk

Russia launches Sochi Olympic torch into space

Spaceflight Joins with NanoRacks to Deploy Satellites from the ISS

Crew Completes Preparations for Soyuz Move

TIME AND SPACE
ASTRA 5B lands in French Guiana for its upcoming Ariane 5 flight

Kazakhstan say Baikonur launch site may be open to Western countries

ESA Swarm launch postponed

Europe's fifth ATV for launch by Arianespace begins its pre-flight checkout at the Spaceport

TIME AND SPACE
NASA Kepler Results Usher in a New Era of Astronomy

Astronomers answer key question: How common are habitable planets?

One in five Sun-like stars may have Earth-like planets

Mystery World Baffles Astronomers

TIME AND SPACE
Czech gold deposits make foreign prospectors drool

Protection Of Materials And Structures From Space Environment at ICPMSE 11

Snap to attention: Polymers that react and move to light

Altering surface textures in 'counterintuitive manner' may lead to cooling efficiency gains




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement