2013•Physics of Atomic NucleiRequires access

X(3872) as the 1 D 2 charmonium

Yu. S. Kalashnikova, Alexey V. Nefediev

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Abstract

The 1 D 2 charmonium assignment for the X(3872) is considered, which is compatible with the 2−+ quantum numbers, as favoured by the BABAR Collaboration analysis presented recently for the π + π − π 0 J/ψ decay mode. It is demonstrated that established properties of the X(3872) are in a drastic conflict with the 1 D 2 c $\bar c$ assignment. Furthermore, it is argued that a combined analysis of the data for different decay channels of the X, with the help of theoretical formulae which meet a number of constraints imposed by phenomenology, results in a suitable description of the experimental data for the X compatible with its quantum numbers 1++.

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What this paper is about

The 1 D 2 charmonium assignment for the X(3872) is considered, which is compatible with the 2−+ quantum numbers, as favoured by the BABAR Collaboration analysis presented recently for the π + π − π 0 J/ψ decay mode. It is demonstrated that established properties of the X(3872) are in a drastic conflict with the 1 D 2 c $\bar c$ assignment. Furthermore, it is argued that a combined analysis of the data for different decay channels of the X, with the help of theoretical formulae which meet a number of constraints imposed by phenomenology, results in a suitable description of the experimental data for the X compatible with its quantum numbers 1++.

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Available abstract

The 1 D 2 charmonium assignment for the X(3872) is considered, which is compatible with the 2−+ quantum numbers, as favoured by the BABAR Collaboration analysis presented recently for the π + π − π 0 J/ψ decay mode. It is demonstrated that established properties of the X(3872) are in a drastic conflict with the 1 D 2 c $\bar c$ assignment. Furthermore, it is argued that a combined analysis of the data for different decay channels of the X, with the help of theoretical formulae which meet a number of constraints imposed by phenomenology, results in a suitable description of the experimental data for the X compatible with its quantum numbers 1++.

Key concepts: Physics, X(3872), Quantum number, Particle physics, Phenomenology (philosophy), Bar (unit), Quantum, Nuclear physics

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