Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle

Details Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle

2006-12-21

arxiv.org/abs/hep-ex/0612053v2

Phys.Rev.Lett.98:132002,2007

Physics

High Energy Physics

High Energy Physics - Experiment

update to journal version

Scientific paper

10.1103/PhysRevLett.98.132002

We present an analysis of angular distributions and correlations of the X(3872) particle 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) particle 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.

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