The background radiation has helped to estimate the mass of the Higgs boson

The background radiation has helped to estimate the mass of the Higgs boson

A team of scientists of the Physical Institute. PN Academy of Sciences, Institute of Theoretical Physics. LD Landau Academy of Sciences and the University of Cologne has completed a series of studies in the field of Cosmoparticle (synthesis of cosmology and particle physics) combining quantum gravity phenomenology of the Standard Model, the theory of cosmological inflation with the observed large-scale structure of space-time. The results precede the expected opening of the Higgs boson at the Large Hadron Collider (LHC). The work says a leading researcher at the sector of the theory of elementary particles Lebedev Physical Institute, Doctor of Physical and Mathematical Sciences Andrei Barvinsky.

Modern studies of the structure of the material world are required to meet high energy imparted to the particles of matter. One of the key challenges in this direction — proof of the existence of the Higgs boson. It is this boson, according to physics, is responsible for the existence of the mass of all material bodies. One is the opening completely fulfill all the promise of the Large Hadron Collider. However, the accelerating technique used in modern high-energy physics, is very close to the limit of technical possibilities. Progress in the collider technology today is provided the use of new technologies rather than increasing the physical size of accelerators — such as the Large Hadron Collider built in a tunnel already existing accelerator LEP. This process has its natural limit. However, the most powerful "accelerator" of elementary particles — this is the early universe, with its big bang, inflationary expansion stage and its initial quantum state.
The idea of "use" this "accelerator" is the basis of the formulated AD Sakharov Cosmoparticle program. This line of research to replace the purely "desktop" experiments on the scattering of particles. The program Cosmoparticle — synthesis of cosmology (astro) particle physics and observational programs. Current understanding of the structure of the microcosm (the Standard Model and its electroweak sector) suggests that the new experimental discoveries can be expected only at the Planck scale of quantum gravity — 10 ^ 19 GeV per nucleon (or at a slightly lower scale of grand unification might have doctored supersymmetry, ~ 10 ^ 16 GeV). Such particle energy is unattainable by man-made accelerators. So the most promising tool for high-energy physics is a synthesis of data resulting from cosmology and astrophysics and accelerator experiments. This is particularly important in relation to the satellite WMAP and Planck programs and the introduction of the Large Hadron Collider LHC, which is expected to open the Higgs boson.
Recognized in the present scenario of origin of the universe — the Big Bang, followed (starting from the age of 10 ^ -43 seconds after the Big Bang until the 10 ^ -35 seconds after the Big Bang) stage of inflation, a stage of exponential expansion of the universe. It is at this stage of the universe becomes familiar to us and agree with all the properties of present-day observations: inflation makes the universe flat, homogeneous and isotropic, determines its size and the subsequent evolution. Inflationary theory and was invented to explain it.
A series of investigations, which explains in this report began with an idea in 2008: that the Higgs boson may be a source of inflation, the same boson, which is the carrier of the scalar field responsible for dark energy, representing about 74% of the total energy of the universe. Special model of cosmological inflation has a strong non-minimal coupling of the Higgs boson to the curvature of space-time has to be before this particle source of inflationary stage in the early universe. Quantum effects of the heavy particles of the Standard Model significantly modify the dynamics of the inflation of the early universe and affect the characteristics of the observed spectrum of cosmic microwave background radiation. A knowledge of the amplitude of the spectrum at a wavelength of about 500 Mpc and a weak red spectral slope to determine the value of the constants of the above non-minimal interaction and the main characteristic of the Standard Model — the mass of the Higgs boson it.
The spectral index of cosmological perturbations is consistent with the observations if the Higgs mass M in the interval 136 GeV <M <185 GeV, within which and is expected to open the Higgs particle at the Large Hadron Collider. Both boundaries of this interval are determined from experimental data of the satellite WMAP, rather than from a purely theoretical limit the range of applicability of the perturbation theory, the applicability of the formalism, etc.

Says one of the authors, Doctor of Physical and Mathematical Sciences Andrei Barvinsky: "The discovery of the Higgs boson in the mass range above would serve as a confirmation of the modern theory of the origin of the early universe and its relation to the structure of matter at the most fundamental microscopic level. And the pictures would show the unity of the universe, to understand that researchers are moving in different directions, covering a space satellite program, astronomical observations and collider experiments of high energy physics. "

This result leads to a convincing combination of quantum gravity phenomenology of the Standard Model and the theory of inflation from the observed large-scale structure of space-time. It provides a synthesis of the physical results on radically different scales: 10 ^ -16 cm — Compton wave length (size) of the Higgs boson, and 500 Mpc — the wavelength of the anisotropy of the cosmic microwave background radiation, which is measured characteristics of primordial cosmological perturbations (about one-tenth the size of the visible universe ). Connection of physical phenomena on different scales so is the physical basis of the occurrence of inflation — the exponentially rapid expansion of the universe, a giant image of "stretching" the physical scale.

SQL - 17 | 0,265 сек. | 7.41 МБ