In physical cosmology, the hadron epoch started 20 microseconds after the Big Bang.[1] The temperature of the universe had fallen sufficiently to allow the quarks from the preceding quark epoch to bind together into hadrons. Initially, the temperature was high enough to allow the formation of hadron/anti-hadron pairs, which kept matter and anti-matter in thermal equilibrium. Following the annihilation of matter and antimatter, a nano-asymmetry of matter remains to the present day. Most of the hadrons and anti-hadrons were eliminated in annihilation reactions, leaving a small residue of hadrons. Upon elimination of anti-hadrons, the Universe was dominated by photons, neutrinos and electron-positron pairs. One refers to this period as the lepton epoch.
Constituents of the Hadron Epoch
In the Hadron Epoch, it is generally believed that the Pion, the lightest meson, was temporarily the most common particle.[2]
Allday, Jonathan (2002). Quarks, Leptons and the Big Bang. Second Edition. ISBN978-0-7503-0806-9.
Physics 175: Stars and Galaxies - The Big Bang, Matter and Energy; Ithaca College, New York.
Referencesedit
^Fromerth, M.J.; Kuznetsova, I.; Labun, L.; Letessier, J.; Rafelski, J. (2012). "From Quark-Gluon Universe to Neutrino Decoupling: 200 < T < 2MeV". Acta Physica Polonica B. 43 (12): 2261. arXiv:1211.4297. doi:10.5506/APhysPolB.43.2261. ISSN 0587-4254. S2CID 118448487.
^Yang, Johann (June 27, 2023). "A short survey of matter-antimatter evolution in the Primordial Universe" (PDF). arXiv. Archived from the original on November 30, 2023. Retrieved June 27, 2023.
This physical cosmology-related article is a stub. You can help Wikipedia by expanding it.
hadron, epoch, physical, cosmology, hadron, epoch, started, microseconds, after, bang, temperature, universe, fallen, sufficiently, allow, quarks, from, preceding, quark, epoch, bind, together, into, hadrons, initially, temperature, high, enough, allow, format. In physical cosmology the hadron epoch started 20 microseconds after the Big Bang 1 The temperature of the universe had fallen sufficiently to allow the quarks from the preceding quark epoch to bind together into hadrons Initially the temperature was high enough to allow the formation of hadron anti hadron pairs which kept matter and anti matter in thermal equilibrium Following the annihilation of matter and antimatter a nano asymmetry of matter remains to the present day Most of the hadrons and anti hadrons were eliminated in annihilation reactions leaving a small residue of hadrons Upon elimination of anti hadrons the Universe was dominated by photons neutrinos and electron positron pairs One refers to this period as the lepton epoch Constituents of the Hadron EpochIn the Hadron Epoch it is generally believed that the Pion the lightest meson was temporarily the most common particle 2 See also editTimeline of the early universe Chronology of the universe Big Bang Allday Jonathan 2002 Quarks Leptons and the Big Bang Second Edition ISBN 978 0 7503 0806 9 Physics 175 Stars and Galaxies The Big Bang Matter and Energy Ithaca College New York References edit Fromerth M J Kuznetsova I Labun L Letessier J Rafelski J 2012 From Quark Gluon Universe to Neutrino Decoupling 200 lt T lt 2MeV Acta Physica Polonica B 43 12 2261 arXiv 1211 4297 doi 10 5506 APhysPolB 43 2261 ISSN 0587 4254 S2CID 118448487 Yang Johann June 27 2023 A short survey of matter antimatter evolution in the Primordial Universe PDF arXiv Archived from the original on November 30 2023 Retrieved June 27 2023 nbsp This physical cosmology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Hadron epoch amp oldid 1187644286, wikipedia, wiki, book, books, library,
