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$1/2^{+} uudd\bar{s}$ pentaquark and instanton-induced forces

Abstract : The mass of the 1/2 + $uudd\bar s$ pentaquark is calculated within the framework of a semirelativistic effective Hamiltonian approach to QCD with instanton-induced forces, using a diquark picture. This approximation allows a correct treatment of the confinement, assumed here to be a Y-junction. With the [ud] diquark mass fitted on the $\Lambda$ -baryon, the ground-state pentaquark is found around 2.2 GeV.
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http://hal.in2p3.fr/in2p3-00023344
Contributor : Lpsc Bibliotheque <>
Submitted on : Friday, November 26, 2004 - 10:09:30 AM
Last modification on : Thursday, November 19, 2020 - 12:58:39 PM

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C. Semay, B. Silvestre-Brac. $1/2^{+} uudd\bar{s}$ pentaquark and instanton-induced forces. European Physical Journal A, EDP Sciences, 2004, 22, pp.1-23. ⟨10.1140/epja/i2004-10032-x⟩. ⟨in2p3-00023344⟩

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