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Discovery of a New Elementary Particle at CERN with Participation also by Waseda University: Further Investigation of the Higgs Boson Particle - The Origin of Mass

The European Organization for Nuclear Research (CERN), which has been continuing experiments in search of the Higgs boson particle that is the origin of mass, published an observation of the existence of a new particle considered likely to be the Higgs boson as the latest preliminary results on July 4.

This experiment makes use of the Large Hadron Collider on the border between Switzerland and France by two international research teams: The ATLAS Experiment Team centered on Japan, America and Europe, and the CMS Experiment Team centered on Europe and America. Associate Professor Kohei Yorita of the Waseda Research Institute for Science and Engineering participated in this experiment as a member of the ATLAS Japan Group, which consists of approximately 110 researchers from 16 national organizations such as the University of Tokyo International Center for Elementary Particle Physics and High Energy Accelerator Research Organization.

The Higgs boson particle is also known as the "God Particle" because if it did not exist, the universe and life itself would not be able to form. This is the only elementary particle that has not been found among the "Standard Model" which is the basis of particle physics. In the experiments of both ATLAS and CMS, a signal of a significant new elementary particle of about 5σ has been observed in the mass region close to 125 - 126GeV (giga electron volts). Although this new elementary particle is considered likely to be the Higgs boson particle, it is essential to conduct further research in order to come to this conclusion.

CERN Director Rolf Heuer said "We have entered a new phase in our understanding of nature. The discovery of the elementary particle considered likely to be the Higgs boson will continue on with more detailed research. We will be able to investigate further the nature of the new particle by accumulating a lot of data and from this we may be able to unlock the other mysteries of the universe."

An outline of the announcement is as follows below:

CERN Experiments Observe Particle Consistent with Long-sought Higgs Boson


LHC Atlas Experiment Japan Group

ATLAS Experiment

European Organization for Nuclear Research (CERN)

Kohei Yorita Laboratory

Higgs Boson Search - The Latest Results of the LHC Experiments: The Participation of 15 National Organizations Including Waseda University and the University of Tokyo

Professor Emeritus Ichiro Ohba and Associate Professor Kohei Yorita, LHC-First Step in Area Unknown to Mankind (Waseda Online "Opinion," published on October 20, 2008)