X(3872)and the 3941 MeV peak inωJ/Ψ

2004/10/31 by D. V. Bugg, D.V. Bugg
Physics and Astronomy · #Amplitude #Atomic physics #Hadron #High-Energy Particle Collisions Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #X(3872) #hep-ph

paper · pdf · doi:10.1103/physrevd.71.016006

published as Phys.Rev.D71:016006,2005 · 18 pages, 3 figures Sign errors corrected in eqns. (4) and (16). Notation clarified in Secn. (4.5). Comments added onthe course partial wave analysis might take

openalex publication_date 2005/01/12 · arxiv created 2005/02/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Belle data for the \ensuremathπ\ensuremathπ mass spectrum in X(3872)\ensuremath→\ensuremathπ⁺\ensuremathπ^\ensuremath-J/\ensuremathΨ are well fitted by \ensuremathρ+J/\ensuremathΨ with J^PC=1⁺⁺, but are poorly fitted by the \ensuremathπ\ensuremathπ S-wave. This rules out quantum numbers 1^+\ensuremath-, 2^-- and 3^--. Formulas for partial wave amplitudes are given for all likely J^PC and decay modes of the 3941 MeV peak which Belle observe in \ensuremathω+J/\ensuremathΨ. Angular correlations involving up to five angles may allow a spin-parity determination, even with quite low statistics. Special attention is given to the case where X(3872) is a cusp or quasi-bound state with the same quantum numbers as the 3941 MeV peak.

Citations

• The D threshold resonance
• Properties of the X(3872) at Belle
• Observation and Properties of theX(3872)Decaying toJ/ψπ+π−inpp¯Collisions ats=1.96 TeV
• Charmonium levels near threshold and the narrow stateX(3872)→π+π−J/ψ
• Observation ofB+→ψ(3770)K+
• Angular distributions inJ/ψ(ρ0,ω)states near threshold
• Comment on the narrow charmonium state of Belle at 3871.8 MeV as a deuson
• Low-energy universality and the new charmonium resonance at 3870 MeV
• Charmonium options for theX(3872)
• The upper limit of the e+e− partial width of X(3872)
• Short range structure in the X(3872)
• An alternative interpretation of X(3872)
• Molecular states of heavy quark mesons
• On the hidden charm state at 3872 MeV
• Reinterpreting several narrow ‘resonances’ as threshold cusps
• Interference and binding effects in decays of possible molecular component of X(3872)
• Study of theB−→J/ψK−π+π−decay and measurement of theB−→X(3872)K−branching fraction
• Moment-operator expansion for the two-meson, two-photon and fermion–antifermion states
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Observation of B+ --> chi(c0)K+.
• The family of strange multiquarks related to the and