The Higgs boson discovery announced by cern’s 2012 discovery is considered one of the largest scientific discoveries in a decade, foreign media New Atlas reported. For years, scientists have been carefully measuring its properties, and now the European Organization for Nuclear Research team has made the most accurate measurements of its mass.
The Higgs boson is a very important particle – it is the last elementary particle predicted by a standard model of particle physics. The boson represents the Higgs field, which spreads evenly throughout the universe. Other elementary particles, such as quarks and light children, increase mass by interacting with the Higgs field.
The hypothesis was first proposed in the 1960s, but it was not until 2012 that the Higgs boson was discovered directly, confirming the mechanism. This won the 2013 Nobel Prize in Physics for the scientists who first came up with the idea.
When the mass of the Higgs boson was first detected, the team measured a mass of about 125-126 GeV. The figure has now been further refined, with uncertainty under 0.1%. According to the team, the quality of the Higgs boson is 125.35 GeV.
The new results are based on data collected from the Large Hadron Collider from 2011 to 2016. The Higgs boson is unstable and usually breaks down quickly into lighter particles. In 2011 and 2012, the CMS detector observed the Higgs boson decay to two Z bosons, and then further decayed to four lighters. In 2016, it was observed to decay into two photons. The researchers combined these results to produce the most accurate new mass measurements ever recorded.
While the team says the new measurements themselves will not directly lead to new physics, they do add to the puzzle of the Higgs boson and the limitations of the standard model. Understanding mass will help improve future measurements of other properties of particles, and the mass we can expect to find in upcoming particle accelerators. Ultimately, the team says, it will help us “understand the long-term stability of the universe.”
A detailed summary of the findings has been published online by CMS Collaboration.