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Analysis of the Quantum Numbers JPC of the X(3872) Particle

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / Donega, Mauro / Moed, Shulamit / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2007, vol. 98, no. 13, p. 132002
Abstract We present an analysis of angular distributions and correlations of the X(3872) particle in the exclusive decay mode X(3872)→J/ψπ+π− with J/ψ→μ+μ−. We use 780  pb−1 of data from pp collisions at 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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CDF COLLABORATION. Analysis of the Quantum Numbers JPC of the X(3872) Particle. In: Physical Review Letters, 2007, vol. 98, n° 13, p. 132002. doi: 10.1103/PhysRevLett.98.132002 https://archive-ouverte.unige.ch/unige:38375

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Deposited on : 2014-07-01

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