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Decay of beauty quark

The standard Model of Physics has stood for fifty years, every time standard physics is usable for all new experiments. One of the reasons LHC was built was physicist fond hope that only at 13 Tera electron volts will new physics happen. So they spent 10 billion dollar machine. It did fill one hole in the Standard model and discovered Higg's boson. But never any particles of -ino type! Either they did not exist or 100 TEV may be needed. Only china could build it! False signal reading has happened to 3 sigma levels (1000-1) chance before, science requires 5 sigmas (3 million-1) for truth. So current quark decay of electron/muon of experimental (100,80) as opposed to (100,100) predicted is (1000-1) sure. Thin but hopes, stronger in my mind because it seems to hold over 10 years of past experiments. Beyond standard model? I root for the physicists who spent entire working life to LHC, the brightest humans of all. This was their dream.

Test of lepton universality in beauty-quark decays

LHCb collaboration: R. Aaij 1000 others

The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction strengths. Previous measurements have shown a wide range of particle decays are consistent with this principle of lepton universality. This article presents evidence for the breaking of lepton universality in beauty-quark decays, with a significance of 3.1 standard deviations, based on proton-proton collision data collected with the LHCb detector at CERN's Large Hadron Collider. The measurements are of processes in which a beauty meson transforms into a strange meson with the emission of either an electron and a positron, or a muon and an antimuon. If confirmed by future measurements, this violation of lepton universality would imply physics beyond the Standard Model, such as a new fundamental interaction between quarks and leptons.