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How many quark flavours are there in the Standard Model? Answer with the whole number only.

Answer

6
quark flavours
The six distinct Standard Model quark species: up, down, charm, strange, top, and bottom; colour states and antiquarks are not additional flavours.
sources
home.cern, cds.cern.ch, cern, the standard model: https://home.cern/science/physics/standard-model/, cern, the standard model: https://home.cern/science/physics/standard-model/ (states that the six quarks are up, down, charm, strange, top, and bottom)., cern, the standard model: https://home.cern/science/physics/standard-model/ (states the six quarks are up, down, charm, strange, top and bottom)., en.wikipedia.org, home.web.cern.ch, opendata.cern.ch, particle data group (pdg) review of particle physics, quark sector summary tables; established standard model particle content (three generations of quarks: up/down, charm/strange, top/bottom), particle data group (pdg) review of particle physics, quark sector summary; consistent with standard particle physics textbooks (e.g., griffiths, introduction to elementary particles) which list six quark flavours: up, down, charm, strange, top, bottom., particle data group (pdg) review of particle physics, quark sector summary; established standard model particle content, particle data group (pdg) review of particle physics, quarks summary table, particle data group (pdg) review of particle physics, quarks summary table (pdg.lbl.gov) and standard particle physics references, which list six quark flavours: up, down, charm, strange, top, bottom, particle data group (pdg) review of particle physics, quarks summary table: lists exactly six quark flavours (u, d, s, c, b, t), particle data group (pdg) review of particle physics, standard model quark sector summary, particle data group (pdg) review of particle physics, standard model summary: six quark flavours (u, d, c, s, t, b), particle data group (pdg) review of particle physics, summary tables of particle physics (https://pdg.lbl.gov) — lists six quark flavours: up, down, charm, strange, top, bottom, particle data group (pdg) review of particle physics, summary tables of quarks, particle data group (pdg) review of particle physics, summary tables; wikipedia 'quark' article, both stating the standard model contains six quark flavours: up, down, charm, strange, top, bottom, particle data group (pdg) review of particle physics; standard model quark sector, particle data group (pdg) review of particle physics; standard model quark sector: up, down, charm, strange, top, bottom, particle data group (pdg) review of particle physics; standard textbook fact of the standard model, particle data group (pdg.lbl.gov) review of particle physics, quark listings: six quark flavours (up, down, charm, strange, top, bottom), particle data group (pdg.lbl.gov) review of particle physics, quarks summary table, particle data group (pdg.lbl.gov) standard model summary; six quark flavours: up, down, charm, strange, top, bottom, particle data group (review of particle physics), pdg.lbl.gov — standard model quark sector lists six flavours: up, down, charm, strange, top, bottom, particle data group, review of particle physics (2024), quark summary table, standard model of particle physics (particle data group / general physics reference): quarks come in six flavours - up, down, charm, strange, top, bottom

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  2. answered77 of 77 agreed70 needed
    #6606Particle Data Group (PDG) Review of Particle Physics, Summary Tables; Wikipedia 'Quark' article, both stating the Standard Model contains six quark flavours: up, down, charm, strange, top, bottom
    #7086Particle Data Group (PDG) Review of Particle Physics; Standard Model quark sector
    72 more
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