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Key particle weighs inside a small portion heavy, confounding physicists

Key particle weighs inside a small portion heavy, confounding physicists

The magnificent clarification physicists use to report how the cosmos works may have some greatest new flaws to patch following a fundamental particle was found to have additional pile than scientists thought.

"It's not fair something is wrong," said Dave Toback, a particle physicist at Texas A&M University with every one other accompanied by a spokesperson for the U.S. government's Fermi National Accelerator Lab, which conducted the experiments. If replicated by other labs, "it literally means something fundamental inside our comprehension of the natural world is wrong."

The physicists at the lab crashed particles with every one other over decadeMusic decad years with every one other accompanied by measured the pile of 4 million W bosons. These subatomic particles are in charge of for a fundamental strength at the center of atoms, with every one other accompanied by they exist for only a fraction of a following earlier to they decay into other particles.

"They are constantly popping inside with every one other accompanied by not here of actuality inside the quantum froth of the universe," Toback said.

The difference inside pile from what the prevailing theory of the cosmos predicts is excessively large to exist a rounding mistake or anything that could exist easily explained away, according to the learning by a team of 400 scientists from around the world published Thursday inside the journal Science.

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The consequence is so extraordinary it must exist confirmed by another experiment, scientists say. If confirmed, it would inside attendance one of the biggest problems yet accompanied by scientists' comprehensive rulebook for the cosmos, called the standard model.

Duke University physicist Ashutosh V. Kotwal, the scheme leader for analysis, said it's exist fond of discovering there's a hidden space inside your house.

Scientists speculated that there may exist an undiscovered particle that is interacting accompanied by the W boson that could describe the difference. Maybe black matter, another poorly understood part of the universe, could exist playing a role. Or maybe there's fair new physics associated accompanied by that they fair don't comprehend at the moment, researchers said.

The standard model says a W boson should measure 80,357,000 electron volts, and or minus six.

"We found it slightly additional than that. Not that much, nevertheless it's enough," said Giorgio Chiarelli, another researcher for the Fermi team with every one other accompanied by research director for the Italian National Institute for Nuclear Physics. The Fermi team's scale place the W boson at a heftier 80,433,000 electron volts, and or minus nine.

It doesn't seem exist fond of a large difference, nevertheless it is a enormous one inside the subatomic world.

But both the team with every one other accompanied by experts not associated accompanied by inside the research said such a large claim requires additional proof from a following team, which they don't have yet.

"It's an incredibly fine measurement, it requires comprehension of various calibrations of various little effects," said Claudio Campagnari, a particle physicist at the University of California Santa Barbara, who wasn't small portion of the Fermi team. "These guys are really good. And I lay clasp of them extremely seriously. But I believe at the extremity of the day what we need is a confirmation by another experiment."

Earlier, less exact measurements of the W boson by other teams found it to exist lighter than predicted, so "maybe there is fair something wonky concerning this experiment," said Caltech physicist Sean M. Carroll, who wasn't small portion of the research with every one other accompanied by said it is "absolutely price taking extremely seriously."

The finding is important since of its potential effect on the standard model of physics.

"Nature has facts," Duke's Kotwal said. "The model is the way we comprehend those facts."

Scientists have lengthy known the standard model isn't perfect. It doesn't describe black matter or gravity well. If scientists have to go inside with every one other accompanied by tinker accompanied by it to describe these findings they have to build sure it doesn't hurl not here of whack mathematical equations that now describe with every one other accompanied by predict other particles with every one other accompanied by forces well, researchers said.

It is a recurring difficulty accompanied by the model. A year ago a different team found another difficulty accompanied by the standard model with every one other accompanied by how muons react.

"Quantum mechanics is really beautiful with every one other accompanied by weird," Toback said. "Anyone who has not been greatly troubled by quantum mechanics has not understood it."

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Follow Seth Borenstein on Twitter at @borenbears.

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The Associated Press Health with every one other accompanied by Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely in charge of for all content.

Key particle weighs inside a small portion heavy, confounding physicists

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