When analyzing data from the Large Hadron Collider, scientists discovered traces of the existence of a previously unknown heavy boson. Physicists published their findings on arXiv.
“The discovery of the Higgs boson was a great triumph for the Standard Model, but its discovery did not put an end to other carriers of fundamental interactions with similar masses and properties. evidence that such bosons may exist, "the researchers write.
There are many theories that extend the Standard Model - a theory that describes most of the interactions of all elementary particles known to science. These theories suggest that in addition to the already discovered carriers of interactions, there are superheavy bosons. Their role is claimed by both heavy analogues of the Higgs boson in theories with two "particles of God" and other objects of the microworld. So far, physicists have not been able to find a single reliable trace of their existence.
Physicists led by Professor of the University of Zurich Andreas Crivellin received the first such evidence during the analysis of data that were collected by the ATLAS and CMS detectors during the last cycle of the LHC.
Scientists have focused their efforts on looking for decay traces of the yet-to-be-discovered heavy bosons, whose mass may be several times that of the Higgs boson. In the course of the decays of these particles, as indicated by the calculations of theoretical physicists, "particles of God" and another type of not yet discovered particles, close in mass and other characteristics to the Higgs boson, should appear.
In turn, the decays of these bosons will give rise to pairs of high-energy photons or pairs of particles opposite each other in charge and containing superheavy "pretty" quarks. Based on these ideas, Crivellin and his colleagues tried to find traces of these "light" heavy bosons in the LHC data.
They managed to find traces of such decays, whose analysis indicates the existence of a previously unknown boson, very close in mass to the "particle of God" (151 GeV and 125 GeV, respectively). Hints of this are present both in the ATLAS data and in the CMS measurements, and their statistical significance almost reaches the level of discovery (one error per 1.5 million attempts).
As physicists hope, next year they will receive the missing information in the course of subsequent observations of the decays of various particles containing "pretty" quarks, as well as other consequences of collisions of particles in the collider ring. Confirmation of the discovery of the "neighbor" of the Higgs boson will help explain some of the well-known and recently discovered anomalies in the properties and behavior of mesons and other particles, summed up Professor Crivellin and his colleagues.