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Short description: Exotic hadron containing seven quarks or antiquarks

In particle physics, heptaquarks are a family of hypothetical composite particles, each consisting of seven quarks or antiquarks of any flavours.[1][2][3][4]


One model predicts that the lowest-energy heptaquark state would be a spin-1/2 or spin-3/2 state of energy roughly 2.5 GeV.[5] Another study found that the most stable heptaquark would include three strange quarks and two strange antiquarks.[6]

See also


  1. (in en) Issues in Nuclear, High Energy, Plasma, Particle, and Condensed Matter Physics: 2011 Edition. ScholarlyEditions. 2012. p. 606. ISBN 978-1-4649-6365-0. Retrieved 23 June 2020. 
  2. (in en) Hadron Spectroscopy. American Institute of Physics. 2003. p. 470. ISBN 978-0-7354-0197-6. Retrieved 23 June 2020. 
  3. Bijker, Roelof; Casten, R.; Frank, Alejandro (2004) (in en). Nuclear Physics, Large and Small: International Conference on Microscopic Studies of Collective Phenomena. American Institute of Physics. p. 244. ISBN 978-0-7354-0207-2. Retrieved 23 June 2020. 
  4. Hosaka, Atsushi; Hotta, Tomoaki (2005) (in en). Pentaquark04 - Proceedings Of The International Workshop. World Scientific. p. 393. ISBN 978-981-4480-35-2. Retrieved 23 June 2020. 
  5. Nuñez V., M.; Lerma H., S.; Hess, P. O.; Jesgarz, S.; Civitarese, O.; Reboiro, M. (23 August 2004). "Modeling pentaquark and heptaquark states". Physical Review C 70 (2). doi:10.1103/PhysRevC.70.025201. 
  6. Park, Aaron; Park, Woosung; Lee, Su Houng (30 August 2017). "Heptaquarks with two heavy antiquarks in a simple chromomagnetic model". Physical Review D 96 (3): 034029. doi:10.1103/PhysRevD.96.034029. ISSN 2470-0010.