Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state

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dc.creatorHanhart, C.
dc.creatorKalashnikova, Yu. S.
dc.creatorKudryavtsev, A. E.
dc.creatorNefediev, A. V.
dc.date2007-04-04
dc.date2007-08-27
dc.date.accessioned2026-07-07T11:40:57Z
dc.date.available2026-07-07T11:40:57Z
dc.descriptionWe investigate the enhancement in the D^0\bar{D}^0π^0 final state with the mass M=3875.2\pm 0.7^{+0.3}_{-1.6}\pm 0.8 MeV found recently by the Belle Collaboration in the B\to K D^0\bar{D}^0π^0 decay and test the possibility that this is yet another manifestation of the well-established resonance X(3872). We perform a combined Flatte analysis of the data for the D^0\bar{D}^0π^0 mode, and for the π^+π^- J/ψmode of the X(3872). Only if the X(3872) is a virtual state in the D^0\bar{D}^{*0} channel, the data on the new enhancement comply with those on the X(3872). In our fits, the mass distribution in the D^0\bar{D}^{*0} mode exhibits a peak at 2-3 MeV above the D^0\bar{D}^{*0} threshold, with a distinctive non-Breit-Wigner shape.
dc.descriptionRevTeX4, 17 pages, some references updated and corrected, version published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0704.0605
dc.identifierhttp://arxiv.org/abs/0704.0605
dc.identifierPhys.Rev.D76:034007,2007
dc.identifierdoi:10.1103/PhysRevD.76.034007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200370
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleReconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
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