« on: 31/12/2020 21:07:25 »
Quote from: charles1948
But nowadays, physicists don't use Bubble Chambers any more. Just racks of diodes and transistors which register differences in electrical current. These differences could result from anything, perhaps differences in thickness of the wiring...So the Higg's Boson might not actually exist, but just be a product of variation in electric wiring?The first thing to say is that the existence of the Higgs Boson was not inferred from a single reading (a single reading which may have been due to a fault or tolerance variation).
The Higgs Boson was seen by two different teams, using two different types of experimental devices (CMS & ATLAS, kilometers apart) at the LHC.
- Each of these teams studied trillions of proton-proton collisions at various energy levels before they homed in on the particular "resonance" that is represented by the Higgs Boson.
- These trillions of collisions (the vast majority of which did not assist the search for the Higgs boson) exercised all parts of these machines, and showed that they worked well.
- While psychology papers are accepted if they demonstrate a p=0.05 (ie 5% probability that they could be talking nonsense), particle physicists look for 5σ, or approximately 0.00006% chance that the result could be just luck.
Having said that, physicists have never detected a Higgs Boson directly.
- The mass of this particle is so great (125GeV/c2), and the lifetime is so short(10-22s) that it doesn't make it out of the vacuum pipe and into the detector before it decays.
- So the existence of the Higgs was determined from its unique decay products and distinctive energy
- This is not so different from the way chemistry worked for many years - many chemical reactions took place in such a small volume, in such a small time, that chemists had to work backwards from the mix of chemical products to determine what chemical species had produced them.