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Latest Quarks Stories

2009-09-17 08:42:39

In recent years several Large-Scale Scientific Facilities (LSSF) for nuclear, hadronic, and particle physics have been upgraded and constructed in China. The Cooling Storage Ring of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR) was completed in 2007, which aims at the exploration of physics with radioactive ion beams (including the structure of unstable nuclei, isospin dependence of nuclear matter, heavy-ion fusion, superheavy nuclei synthesis), hadronic physics, physics of high-energy...

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2009-06-29 13:30:00

At a recent physics seminar at the Department of Energy's Fermi National Accelerator Laboratory, Fermilab physicist Pat Lukens of the CDF experiment announced the observation of a new particle, the Omega-sub-b (ÃŽ©b). The particle contains three quarks, two strange quarks and a bottom quark (s-s-b). It is an exotic relative of the much more common proton and has about six times the proton's mass.The observation of this "doubly strange" particle, predicted by the Standard...

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2009-03-19 08:59:01

Scientists of the CDF experiment at the Department of Energy's Fermi National Accelerator Laboratory announced March 17 that they have found evidence of an unexpected particle whose curious characteristics may reveal new ways that quarks can combine to form matter. The CDF physicists have called the particle Y(4140), reflecting its measured mass of 4140 Mega-electron volts. Physicists did not predict its existence because Y(4140) appears to flout nature's known rules for fitting quarks and...

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2009-03-12 10:32:55

Scientists of the DZero collaboration at the Department of Energy's Fermi National Accelerator Laboratory have achieved the world's most precise measurement of the mass of the W boson by a single experiment. Combined with other measurements, the reduced uncertainty of the W boson mass will lead to stricter bounds on the mass of the elusive Higgs boson. The W boson is a carrier of the weak nuclear force and a key element of the Standard Model of elementary particles and forces. The particle,...

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2009-03-10 06:55:00

A group of 28 scientists at the U.S. Department of Energy's Fermi National Accelerator Laboratory (Fermilab) have observed particle collisions that produce single top quarks. The observation resulted from proton-antiproton collisions measured by the DZero detector in Fermilab's Tevatron, currently the world's most powerful operating particle accelerator. The discovery of the single top quark confirms critical parameters of particle physics, including the total number of quarks, and is...

2008-10-08 00:00:18

World in brief STOCKHOLM The award of the 2008 Nobel Prize in physics to two Japanese scientists and a Japanese American for helping explain why the universe is asymmetrical, and thus fit for life, prompted an angry response from Italy's National Institute of Nuclear Physics yesterday. Half the 10m kroner (800,000) prize went to Yoichiro Nambu and the other to Makoto Kobayashi and Toshihide Maskawa of Japan for their discoveries in spontaneous broken symmetry in sub- atomic physics....

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2008-09-12 10:50:00

University of Michigan physicists played a leading role in the discovery of a new particle, the Omega b baryon, which is an exotic relative of the proton. It was detected for the first time in a particle accelerator at Fermi National Accelerator Laboratory (Fermilab) in Illinois, Fermilab has announced. The heavy particle is scarce today, but scientists believe it was abundant soon after the Big Bang. "This discovery helps us understand how matter was formed in the universe. It shows the...

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2008-09-05 10:48:00

Physicists of the DZero experiment at the U.S. Department of Energy's Fermi National Accelerator Laboratory have discovered a new particle made of three quarks, the Omega-sub-b (ÃŽ©b). The particle contains two strange quarks and a bottom quark (s-s-b). It is an exotic relative of the much more common proton and weighs about six times the proton mass. The discovery of the doubly strange particle brings scientists a step closer to understanding exactly how quarks form matter...

2005-07-07 15:32:05

Dutch researcher Bram Wijngaarden investigated how bottom quarks are created during collisions between protons and antiprotons. Wijngaarden's measurements have contributed to a better understanding of the theory, and can be used to explain why the production of these quarks during such collisions is higher than had originally been expected. Bram Wijngaarden investigated the creation of bottom quarks using the D zero experiment of the particle accelerator at the Fermi lab in Chicago, United...

2005-07-06 23:18:45

New, higher precision data that could only have been gathered at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn't appear in another place it was expected. This intriguing finding contradicts evidence previously presented by Jefferson Lab researchers that they had sighted a pentaquark, a particle built of five quarks. Volker Burkert, a Jefferson Lab Experimental Hall Leader, will present this preliminary result in...


Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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