Mass of the Higgs boson

October 28, 2017


Mass of the Higgs boson


Image: Hawking at LHCStephen Hawking bet Gordon Kane $100 that physicists would not discover the Higgs boson. After losing that bet when physicists detected the particle in 2012, Hawking lamented the discovery, saying it made physics less interesting. Now, in the preface to a new collection of essays and lectures called "Starmus, " the famous theoretical physicist is warning that the particle could one day be responsible for the destruction of the known universe.

Hawking is not the only scientist who thinks so. The theory of a Higgs boson doomsday, where a quantum fluctuation creates a vacuum "bubble" that expands through space and wipes out the universe, has been around for a while. However, scientists don't think it could happen anytime soon.

"Most likely it will take 10 to the 100 years [a 1 followed by 100 zeroes] for this to happen, so probably you shouldn't sell your house and you should continue to pay your taxes, " Fermilab theoretical physicist Joseph Lykken said during a Sept. 2 lecture at the SETI Institute. "On the other hand, it may already have happened, and the bubble might be on its way here now. And you won't know because it's going at the speed of light, so there's not going to be any warning." [Doomsday: 9 Real Ways Earth Could End]

The Higgs boson is sometimes referred to as the "God Particle, " much to the chagrin of scientists who prefer the official name. Its discovery lends strong support to the Standard Model of particle physics, which is thought to govern the basic building blocks of matter. The Higgs boson particle is important to the Standard Model because it signals the existence of the Higgs field, an invisible energy field present throughout the universe that imbues other particles with mass. Since its discovery two years ago, the particle has been making waves in the physics community.

Now that scientists have measured the particle's mass, they can make many other calculations, including one that seems to point to the end of the universe.

Doomsday calculations

The Higgs field emerged at the birth of the universe and has acted as its own source of energy since then, Lykken said. Physicists believe the Higgs field may be slowly changing as it tries to find an optimal balance of field strength and the energy required to maintain that strength. [5 Implications of Finding a Higgs Boson Particle]

"Just like matter can exist as liquid or solid, so the Higgs field, the substance that fills all space-time, could exist in two states, " Gian Giudice, a theoretical physicist at the CERN particle physics center where the Higgs boson was discovered, explained during a TED talk in October 2013.

Right now the Higgs field is in a minimum potential energy state — like a valley in a field of hills and valleys. The huge amount of energy required to change into another state is like chugging up a hill. If the Higgs field makes it over that energy hill, some physicists think the destruction of the universe is waiting on the other side.

But an unlucky quantum fluctuation, or a change in energy, could trigger a process called "quantum tunneling." Instead of having to climb the energy hill, quantum tunneling would make it possible for the Higgs field to "tunnel" through the hill into the next, even lower-energy valley. This quantum fluctuation could happen somewhere out in the empty vacuum of space between galaxies and create an expanding "bubble, " Lykken said.

Source: www.nbcnews.com
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