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Suppressed decay into open charm for the Y(4260) being an hybrid

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arxiv hep-ph/0507119 v2 pith:7XSJPFFG submitted 2005-07-10 hep-ph

Suppressed decay into open charm for the Y(4260) being an hybrid

E. Kou , O. Pene This is my paper
classification hep-ph
keywords charmdecayhybridobservationopenruleselectionbabar
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigate the Y(4260) resonance recently discovered by the Babar collaboration. We propose the observation of its decay into J/psi pi pi and its non observation into open charm as a consequence of it being a charmonium hybrid state with a magnetic constituent gluon. We prove a selection rule forbidding its decay into two S-wave charmed mesons in any potential model. We suggest a generalisation of the selection rule based only on the heavy quark nature of the charm.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective

    hep-ph 2026-04 accept novelty 5.5

    TQ4Q2.0 supplies the first complete, uncertainty-quantified set of NRQCD-based fragmentation functions for all-heavy tetraquarks, including nonconstituent channels and public grids for jet-associated production.

  2. Vector charmonium(-like) states in the energy range of 4.1-4.6 GeV

    hep-ph 2026-06 unverdicted novelty 5.0

    A coupled-channel framework is developed and fitted to BESIII data on vector charmonium-like states in the 4.1-4.6 GeV range, concluding that coupled-channel effects with dynamically generated poles explain the line shapes.

  3. All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective

    hep-ph 2026-04 unverdicted novelty 5.0

    The authors construct and publicly release the TQ4Q2.0 fragmentation functions for all-heavy S-wave tetraquarks via NRQCD factorization, extending prior work with nonconstituent contributions and replica-based uncertainties.