Holographic hadro-quarkonium

S. Dubynskiy, A. Gorsky, M. B. Voloshin

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We consider the recently suggested model for some resonances near the open charm threshold as bound states of charmonium inside excited light mesons. It is argued in the soft-wall holographic model of QCD that such states of heavy quarkonium necessarily exist at sufficiently large spin of the light meson. The bound state is provided by the dilaton exchange through the 5D bulk. We also argue that the decay of such bound systems into mesons with open heavy flavors due to splitting of the heavy quarkonium can be treated as semiclassical tunneling and is suppressed. This behavior is in agreement with the known relative suppression of the decay of the discussed charmonium-like resonances into channels with D mesons.

Original languageEnglish (US)
Pages (from-to)82-86
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume671
Issue number1
DOIs
StatePublished - Jan 12 2009

Bibliographical note

Funding Information:
The work of S.D. and M.B.V. is supported in part by the DOE grant DE-FG02-94ER40823. The work of A.G. is supported in part by the grants RFBR-06-02-17382, INTAS-1000008-7865, PICS-07-0292165. A.G. acknowledges the warm hospitality at the William I. Fine Theoretical Physics Institute where this work was done.

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