http://www.popsci.com/science/artic...inning-string-theory-and-answer-why-were-here
But now the LHC data, which physicists say are more precise than Tevatronâs, does not show this matter-decay deviation. This, in turn, could mean there is no supersymmetry; no squarks or selectrons. We are not going to attempt to delve into the physics of this â check out the LHCb experiment and Quantum Diaries posts if youâre interested in the nuts and bolts.
This will be disappointing to some theorists, because supersymmetry provides a handy answer to many troubling physics questions. At high energies, it unifies electromagnetism with the weak and strong nuclear forces, and in some iterations, the theory provides a candidate for dark matter, in the form of a stable heavy particle like a neutralino. Supersymmetry is also an essential characteristic of string theory, which for now is the only widely accepted theory that unifies quantum mechanics and relativity.
In a story about this over at the BBC, Nobel Prize-winning physicist George Smoot called supersymmetry âan extremely beautiful model.â
âItâs got symmetry, itâs super and it's been taught in Europe for decades as the correct model because it is so beautiful,â he said. âBut there's no experimental data to say that it is correct.â
So what does this mean? Itâs not entirely over, as the BBC points out â there are a few versions of supersymmetry, which are more complex than the basic mass-energy level version that has apparently just been ruled out. So different flavors of supersymmetry could still be true. But it could also mean supersymmetry is just wrong, and if thatâs the case, physicists will have to come up with some big new ideas.
But now the LHC data, which physicists say are more precise than Tevatronâs, does not show this matter-decay deviation. This, in turn, could mean there is no supersymmetry; no squarks or selectrons. We are not going to attempt to delve into the physics of this â check out the LHCb experiment and Quantum Diaries posts if youâre interested in the nuts and bolts.
This will be disappointing to some theorists, because supersymmetry provides a handy answer to many troubling physics questions. At high energies, it unifies electromagnetism with the weak and strong nuclear forces, and in some iterations, the theory provides a candidate for dark matter, in the form of a stable heavy particle like a neutralino. Supersymmetry is also an essential characteristic of string theory, which for now is the only widely accepted theory that unifies quantum mechanics and relativity.
In a story about this over at the BBC, Nobel Prize-winning physicist George Smoot called supersymmetry âan extremely beautiful model.â
âItâs got symmetry, itâs super and it's been taught in Europe for decades as the correct model because it is so beautiful,â he said. âBut there's no experimental data to say that it is correct.â
So what does this mean? Itâs not entirely over, as the BBC points out â there are a few versions of supersymmetry, which are more complex than the basic mass-energy level version that has apparently just been ruled out. So different flavors of supersymmetry could still be true. But it could also mean supersymmetry is just wrong, and if thatâs the case, physicists will have to come up with some big new ideas.