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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] [ 6]
^ 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 .^ Hadron Spectroscopy American Institute of Physics . 2003. p. 470. ISBN 978-0-7354-0197-6 . Retrieved 23 June 2020 .^ Bijker, Roelof; Casten, R.; Frank, Alejandro (2004). 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 . ^ Hosaka, Atsushi; Hotta, Tomoaki (2005). Pentaquark04 - Proceedings Of The International Workshop World Scientific . p. 393. ISBN 978-981-4480-35-2 . Retrieved 23 June 2020 . ^ 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): 025201. arXiv :nucl-th/0405052 Bibcode :2004PhRvC..70b5201N . doi :10.1103/PhysRevC.70.025201 . S2CID 119393500 . ^ 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. arXiv :1706.10025 Bibcode :2017PhRvD..96c4029P . doi :10.1103/PhysRevD.96.034029 . ISSN 2470-0010 . S2CID 119445036 .
