New generation of neutrino experiments begins
Neutrinos come in three flavours – electron, muon and tau neutrinos. According to the Standard Model of particle physics they have zero mass and only interact weakly with matter, which makes the...
Neutrino prediction proved wrong
Researchers have been worried about the discrepancy between the experimental data and simulations at Super-Kamiokande for some time. According to the simulations, the experiment was detecting too few ...
CERN confirms direct CP violation
Charge-parity (CP) symmetry implies that particles and antiparticles behave like mirror images of each other. Charge conjugation changes particles into their antiparticles – e.g., electrons beco...
AMS hints at cosmic-ray mystery
The experiment also found that changes in the strength of the Earth’s magnetic field with latitude do not alter the number of low-energy protons hitting the Earth’s atmosphere. However the...
Read article: Neutrino lab sees “first light”
Neutrino lab sees “first light”
The observatory is a joint project between Canada, the US and the UK, and was officially opened last year. It is the first detector that is capable of distinguishing between the three different types ...
First collisions at BaBar
The collisions are termed “asymmetric” because the electrons are accelerated to 9 GeV – three times the energy of the positrons. As the two beams collide, they generate B mesons that...
e/5 particles discovered
In 1980 Klaus von Klitzing discovered that the so-called Hall conductance across a material varied in steps, not continuously, as the magnetic field was changed. In other words the Hall effect was qua...
Neutrinos may decay
According to the Standard Model of particle physics, the three types of neutrinos – electron, muon and tau neutrinos – have zero mass. But the number of atmospheric neutrinos – muon ...
CERN and Fermilab argue over “new” discovery
Last Monday Fermilab issued a press release titled “Fermilab physicists find new matter-antimatter asymmetry”. On Thursday CERN replied with a statement which read: “The CERN physics...
New director for Fermilab
Witherell received his PhD from the University of Wisconsin in 1973 and became an assistant professor at Princeton University in 1975. He moved to Santa Barbara in 1981 and in 1990 won the American Ph...
