The existence of quarks is not solely based on scientific interpretation. Quarks are fundamental particles that are an essential part of the Standard Model of particle physics, which is a highly successful theory that describes the fundamental particles and their interactions. Quarks are postulated to be the building blocks of protons, neutrons, and other hadrons, and they carry fractional electric charges.
While it is true that quarks cannot be observed as free particles in isolation, their existence is supported by a vast body of experimental evidence. Particle accelerators, such as the Large Hadron Collider (LHC), have been instrumental in studying the properties and behavior of quarks. These experiments involve colliding particles at extremely high energies, and the resulting collisions provide indirect evidence for the existence of quarks through the patterns of particle interactions and decay products.
Additionally, there are various other lines of evidence supporting the existence of quarks. For example, deep inelastic scattering experiments, which involve firing high-energy electrons or neutrinos at atomic nuclei, have provided detailed information about the structure of protons and neutrons. These experiments have revealed that the scattering patterns are consistent with the presence of point-like constituents (quarks) within nucleons.
Furthermore, the theory of quantum chromodynamics (QCD) provides a mathematical framework for understanding the behavior of quarks and the strong nuclear force that binds them together. QCD has been successful in predicting and explaining a wide range of phenomena observed in high-energy particle physics experiments.
So, while direct observation of isolated quarks is not currently possible due to the nature of the strong force, the existence of quarks is strongly supported by experimental evidence, theoretical frameworks, and the overall consistency of the Standard Model.