# Analysis of the quantum numbers $J^{PC}$ of the X(3872)

Abstract : We present an analysis of angular distributions and correlations of the X(3872) in the exclusive decay mode X(3872)->J/psi pi+ pi- with J/psi->mu+ mu-. We use 780 pb -1 of data from ppbar collisions at sqrt{s} = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We derive constraints on spin, parity, and charge conjugation parity of the X(3872) by comparing measured angular distributions of the decay products with predictions for different JPC hypotheses. The assignments JPC = 1++ and 2-+ are the only ones consistent with the data.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00123524
Contributor : Dominique Girod <>
Submitted on : Wednesday, January 10, 2007 - 10:22:02 AM
Last modification on : Friday, December 11, 2020 - 3:16:19 AM

### Citation

A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M.G. Albrow, et al.. Analysis of the quantum numbers $J^{PC}$ of the X(3872). Physical Review Letters, American Physical Society, 2007, 98, pp.132002. ⟨10.1103/PhysRevLett.98.132002⟩. ⟨in2p3-00123524⟩

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