Detecting new types of metabolism of neutron particles

Physicists have just discovered a new type of neutron-based elementary particles. They participate in two of the four basic types of interaction, weak interaction and compelling interaction. During the experiment using the T2K ultra-sensitive detector in Japan, the phenomenon of muon neutron (neutron neuton) has been transformed into an electron neutrino. This phenomenon has just been published in Nature (UK).

Now scientists all know that neutrinos are divided into three types: electronic neutrinos , neutrinos and neutrinos. During the experimental process on J-PARC accelerators (Japan Proton Accelerator Research Complex) in Tokai (Japan) , it is obtained that a neutron neutron when it releases a high-energy proton into beer is graphite .

Later, these neutrinos were directed at a large detector, Super-K, located 295 km from J-PARK at the Kamioka zinc mine, 1 km deep on the ground. When analyzing the data on the detector during the period from January 2010 to March 11, 2011, it must be stopped because Tokai is located in the earthquake zone.

Japanese J-PARK accelerator.

During that time, the Super-K detector was recorded 88 times, corresponding to neutron detection of which six electronic neutron detection times. The new data helps scientists study whether the problem of neutrinos and antiquetinos (antineutrino) has identical properties after measuring their vibrations and comparing with 'normal' neutron oscillations. For experts, this information is necessary to explain why it is not possible to see antimatter when observing the universe, although when the Big Bang happens, the number of two This kind of material is the same.

According to the announcement of the Russian news agency Itar-Tass, the Nuclear Research Institute of the Russian Academy of Sciences has recorded six times of transformation, speaking in the language of scientists, which is 6 times fluctuating. This neutron turns into another neutron's oscillation, specifically the neutron that turns into an electron neutron.

Professor Iuri Kudenko, director of the Russian Nuclear Laboratory, said: ' Until now, such transformations have not been found to violate the laws of symmetry and preserve the symmetry of leptons - the group The most basic particle among the basic particles. In other words, the foundation of the universe is stable . '

The problem is, in physics long ago, people considered neutrinos as massless particles . That explains why these particles can penetrate the Earth's thickness, not being " entangled " with each other, not interacting with any other particle.

With the discovery over there, it turns out they also have mass . Professor Kudenko admitted: ' Of course the neutron mass is very small. From the direct measurements of the Nuclear Research Institute of the Russian Academy of Sciences, it weighs less than 2 electron-volts '.

However, though it is so mild, they can lead to important application research in the future. For example, it is possible to organize an illuminated 'Earth cut ' for example. Not only do they help us understand exactly and details the structure of the Earth, but also discover the minerals that are useful in the very deep in the earth.