Abstract
Three years have passed since the BELLE discovery of the X(3872), and there are still (at least) two competing interpretations of this particle, which resembles a charmonium but behaves in a dramatic different way from it. Is X a molecule of two D mesons or a compact four-quark state? Are these two pictures really resolvable?
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
The X discovery: S. K. Choi et al. [Belle], Phys. Rev. Lett. 91, 262001 (2003) [arXiv:hep-ex/0309032]; D. Acosta et al. [CDF II], Phys. Rev. Lett. 93, 072001 (2004); V. M. Abazov et al. [D0], Phys. Rev. Lett. 93, 162002 (2004); B. Aubert et al. [BABAR], Phys. Rev. D 71, 071103 (2005).
Molecules: M. B. Voloshin and L. B. Okun, JETP Lett. 23, 333 (1976) [Pisma Zh. Eksp. Teor. Fiz. 23, 369 (1976)]; N. A. Tornqvist, Phys. Rev. Lett. 67, 556 (1991); F. E. Close and P. R. Page, Phys. Lett. B 578, 119 (2004) [arXiv:hep-ph/0309253]; E. S. Swanson, Phys. Lett. B 588, 189 (2004) [arXiv:hep-ph/0311229]; E. Braaten and M. Kusunoki, Phys. Rev. D 72, 054022 (2005) [arXiv:hep-ph/0507163]; M. Suzuki, Phys. Rev. D 72, 114013 (2005) [arXiv:hep-ph/0508258]; E. S. Swanson, Phys. Rept. 429, 243 (2006) [arXiv:hepph/0601110].
Diquarks & Tetraquarks: R. L. Jaffe and F. Wilczek, Phys. Rev. Lett. 91, 232003 (2003) [arXiv:hep-ph/0307341]; L. Maiani, F. Piccinini, A. D. Polosa and V. Riquer, Phys. Rev. Lett. 93, 212002 (2004) [arXiv:hep-ph/0407017]; Phys. Rev. D 70, 054009 (2004) [arXiv:hep-ph/0407025]; Phys. Rev. D 71, 014028 (2005) [arXiv:hep-ph/0412098]; Phys. Rev. D 72, 031502 (2005) [arXiv:hepph/0507062]; AIP Conf. Proc. 814, 508 (2006) [arXiv:hep-ph/0512082]; arXiv:hep-ph/0604018; H. Hogaasen, J. M. Richard and P. Sorba, Phys. Rev. D 73, 054013 (2006) [arXiv:hep-ph/0511039]; R. Jaffe, Phys. Rev. D 72, 074508 (2005) [arXiv:hep-ph/0507149]; M. Karliner and H. J. Lipkin, R. D. Matheus, S. Narison, M. Nielsen and J. M. Richard
Lattice and Diquarks: C. Alexandrou, Ph. de Forcrand and B. Lucini, arXiv:heplat/0609004.
Hybrid: F. E. Close and P. R. Page, Nucl. Phys. B 443, 233 (1995) [arXiv:hepph/9411301]; E. Kou and O. Pene, Phys. Lett. B 631, 164 (2005) [arXiv:hepph/0507119]; F. E. Close and P. R. Page, Phys. Lett. B 628, 215 (2005) [arXiv:hep-ph/0507199].
Counting Quarks: L. Maiani, A. D. Polosa, V. Riquer and C. A. Salgado, arXiv:hep-ph/0606217.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer-Verlag Italia
About this paper
Cite this paper
Polosa, A.D. (2007). The double life of the X meson. In: Montagna, G., Nicrosini, O., Vercesi, V. (eds) IFAE 2006. Springer, Milano. https://doi.org/10.1007/978-88-470-0530-3_4
Download citation
DOI: https://doi.org/10.1007/978-88-470-0530-3_4
Publisher Name: Springer, Milano
Print ISBN: 978-88-470-0529-7
Online ISBN: 978-88-470-0530-3
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)