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JPG=1++ charged resonance in the Υ(4260)π+πJ/ψ decay?

L. Maiani, V. Riquer, R. Faccini, F. Piccinini, A. Pilloni, and A. D. Polosa
Phys. Rev. D 87, 111102(R) – Published 13 June 2013

Abstract

New BES and Belle data show a peak in the Y(4260) decay into J/ψ plus one charged pion. We point out that the peak might correspond to a charged resonance at about 3880 MeV predicted some time ago within a tetraquark model. The same tetraquark model predicts another peak at about 100 MeV below the observed one. We discuss the possibility of having it in present data. On the other hand we expect that if the molecular picture were the correct one, a peak corresponding to a D*D¯* state should appear at about 4020 MeV.

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  • Received 26 March 2013

DOI:https://doi.org/10.1103/PhysRevD.87.111102

© 2013 American Physical Society

Authors & Affiliations

L. Maiani1,2, V. Riquer1, R. Faccini2, F. Piccinini3, A. Pilloni2, and A. D. Polosa2

  • 1CERN-PH-TH, Geneva 1211, Switzerland
  • 2Dipartimento di Fisica and INFN, Sapienza Università di Roma, Piazzale Aldo Moro 2, I-00185 Roma, Italy
  • 3INFN Sezione di Pavia, Via Bassi 6, I-27100 Pavia, Italy

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Issue

Vol. 87, Iss. 11 — 1 June 2013

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