As look for Higgs boson by means of a collider

As look for Higgs boson by means of a collider

Some scientists believe that on July 4, 2012 to physics gate in so-called "New Physics" opened. This symbol for those areas unknown which are outside Standard model: new elementary particles, fields, interactions between them, etc. But before scientists had to find and interrogate the gatekeeper – notorious Higgs boson.

Whether the sponsor of placement P&G Articles on the subject "As Look for Higgs Boson by means of a Collider" What mass of Higgs boson Is Higgs boson god Nayden's particle Higgs boson the Large Hadron Collider consists of an accelerator ring (magnetic system) 26 659 m long, an injection complex, accelerating section, seven detectors intended for detection of elementary particles, and several other little significant systems. Two of detectors of a collider use for search of a higgsovsky boson: ATLAS and CMS. The experiments which are carried out on them, and also collaborations (group) of scientists which work at these detectors are called as the abbriveatura of the same name. They are quite numerous, for example, about 2,5 thousand people participate in collaboration of CMS.

To mark new particles, in a collider create a proton - proton collisions, i.e. collisions of bunches of protons. Each bunch consists of 2808 clots, and in each of these clots – about 100 billion protons. Dispersing in an injection complex, protons "are injected" into a ring where are accelerated by means of resonators and find energy of 7 Tev, and then face in the locations of detectors. Results of such collisions is the whole cascade of particles with various properties. Before experiments it was expected that the boson which is earlier predicted by the physicist-theorist Peter Higgs will be one of them.

Higgs boson is an unstable particle. Appearing, it right there breaks up therefore it was looked for on disintegration products on other particles: gluons, muons, photons, electrons, etc. Process of disintegration was fixed by the detectors ATLAS and CMS, and the received information went on thousands of computers worldwide. Earlier scientists assumed that channels (disintegration options) can be a little, and with different success made researches on each of these directions.

Eventually on July 4, 2012 at an open seminar in CERN of physics reported results of the work. Scientists from collaboration of CMS declared that analyzed data on five channels: disintegration of Higgs boson on Z-bosons, gamma photons, electrons, W-bosons and quarks. Totally statistical importance of detection of Higgs boson made 4,9 sigma (it is the term from statistics, so-called "a standard deviation") for the mass of 125,3 Gev.

Then scientists from collaboration of ATLAS declared data of disintegration of a boson on two channels: on two photons and on four leptons. Totally statistical importance for weight in 126 Gev made the 5th sigma, i.e. probability of that statistical fluctuation (a casual deviation) is the reason of observed effect, is equal 1 to 3,5 million. This result allowed to declare with high probability opening of a new particle – Higgs boson.