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Charmonium options for theX(3872)

2003/11/30 by T. Barnes, Ted Barnes, Stephen Godfrey +1 · 288 citations
Physics and Astronomy · #Atomic physics #Branching fraction #Charm (quantum number) #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #X(3872) #hep-ph

paper · pdf · doi:10.1103/physrevd.69.054008

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 69(5) (American Physical Society) · 11 pages, 5 tables. typos corrected, references and discussion added

arxiv created 2003/12/24 · openalex publication_date 2004/03/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In this paper we consider all possible 1D and 2P cc assignments for the recently discovered X(3872). Taking the experimental mass as input, we give numerical results for the E1 radiative widths as well as the three principal types of strong decays; open-charm, cc annihilation and closed-charm hadronic transitions. We find that many assignments may be immediately eliminated due to the small observed total width. The remaining viable cc assignments are 13D3, 13D2, 11D2, 23P1 and 21P1. A search for the mode J/\ensuremathψ\ensuremathπ0\ensuremathπ0 can establish the C parity of the X(3872), which will eliminate many of these possibilities. Radiative transitions can then be used to test the remaining assignments, as they populate characteristic final states. The 13D2 and 11D2 states are predicted to have large (ca. 50%) radiative branching fractions to \ensuremathχc1\ensuremathγ and hc\ensuremathγ, respectively. We predict that the 13D3 will also be relatively narrow and will have a significant (ca. 10%) branching fraction to \ensuremathχc2\ensuremathγ, and should also be observable in B decay. Tests for non-ccX(3872) assignments are also discussed.

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