Physicists at Cern have not yet been able to confirm the existence of
the elusive "God particle", but they have nevertheless made another interesting discovery
Scientists announced that the Large Hadron Collider, often referred to as the Big Bang machine has detected an unknown particle composed of three quarks.
A new baryon could thus be detected for the first time at the LHC.
The baryon known as Xi_b^* confirms fundamental assumptions of physics regarding the binding of quarks.
In particle physics, the baryon family refers to particles that are made up of three quarks.
Quarks form a group of six particles that differ in their masses and charges.
The two lightest quarks, the so-called "up" and "down" quarks, form the two atomic components, protons and neutrons.
All baryons that are composed of the three lightest quarks ("up," "down" and "strange" quarks) are known.
Only very few baryons with heavy quarks have been observed to date.
They can only be generated artificially in particle accelerators as they are heavy and very unstable.
Scientists at CERN have discovered a new, previosuly unknown particle.
In the course of proton collisions in the LHC at CERN, physicists Claude Amsler, Vincenzo Chiochia and Ernest Aguiló from the University of Zurich's
Physics Institute managed to detect a baryon with one light and two heavy quarks. The particle Xi_b^* comprises one "up," one "strange" and one "bottom" quark
(usb), is electrically neutral and has a spin of 3/2 (1.5). Its mass is comparable to that of a lithium atom.
The new discovery means that two of the three baryons predicted in the usb composition by theory have now been observed.
The calculations are based on data from proton-proton collisions at an energy of seven Tera electron volts (TeV)
collected by the CMS detector between April and November 2011. A total of 21 Xi_b^* baryon decays were discovered
-- statistically sufficient to rule out a statistical fluctuation.
The discovery of the new particle confirms the theory of how quarks bind and therefore helps to understand the
strong interaction, one of the four basic forces of physics which determines the structure of matter.
Abnormal Star Discovered In The 'Forbidden Zone'
A team of astrophysicists from Germany, France and Italy have discovered in the constellation Leo is an old star.
The star's existence raised at once many questions for scientists.
The object is definitely not as its "contemporaries" that appeared immediately after the Big Bang event.
Doesn't Secret Dark Matter Exist?
The more scientists study dark matter they know lesser and are not particularly optimistic about their results.
After completing this study, we know less about dark matter than we did before," said Matt Walker, of the Harvard-Smithsonian Center for Astrophysics.
A mysterious and still unknown substance is totally invisible in the Universe and reveals its presence only through its gravitational pull...
Earth Is In The Middle Of A Space-Time Vortex
Earth sits in the middle of a space-time vortex.
Einstein predicted this almost 100 years ago and he was right.
Space-time around Earth seems to be distorted, just a general relativity predicts.
Violent Dragon Clash Billions Of Years Ago
NGC 5907 is sometimes called the "Splinter" or Knife Edge Galaxy because of its unusual appearance.
It is a spiral galaxy lying in the Dragon constellation,
about 40 million light-years from Earth that could have been formed through a gigantic collision of galaxies, 8 to 9 billion years ago.