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With the discovery of the Higgs boson in 2012,the Standard Model of particle physics was completed.This description encompasses all known subatomic particles and their interactions.Much of the public interest in high-energy physics now focuses on experime
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With the discovery of the Higgs boson in 2012,the Standard Model of particle physics was completed.This description encompasses all known subatomic particles and their interactions.Much of the public interest in high-energy physics now focuses on experimental searches for \'new physics\' beyond the Standard Model.Yet it would be a mistake to imagine that the Standard Model is nowfully understood.Many questions remain about the ways in which known fundamental particles interact and unite,especially at the very high energies needed to produce the most exotic varieties,such as heavy quarks (quarks are the constituents ofhadrons,which include the ordinary nuclear particles protons and neutrons) and heavy leptons (leptons are members of the family that includes electrons).
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