Journal Article

PreJuSER-59460

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reconciling the X(3872) with the near-threshold enhancement in the D-0(D)over-bar(*0) final state

Hanhart, C.FZJ* ; Kalashnikova, Y. S. ; Kudryavtsev, A. E. ; Nefediev, A. V.

2007
Soc. [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10521  doi:10.1103/PhysRevD.76.034007

Abstract: We investigate the enhancement in the D-0(D) over bar (0)pi(0) final state with the mass M=3875.2 +/- 0.7(-1.6)(+0.3)+/- 0.8 MeV found recently by the Belle Collaboration in the B -> KD0(D) over bar (0)pi(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(D) over bar (0)pi(0) mode and for the pi(+)pi(-)J/psi mode of the X(3872). Only if the X(3872) is a virtual state in the D-0(D) over bar (*0) channel do the data on the new enhancement comply with those on the X(3872). In our fits, the mass distribution in the D-0(D) over bar (*0) mode exhibits a peak at 2-3 MeV above the D-0(D) over bar (*0) threshold, with a distinctive non-Breit-Wigner shape.

Keyword(s): X(3872): decay modes ; B: hadronic decay ; B: branching ratio ; differential cross section ; mass spectrum: (D0 anti-D0 pi0) ; parametrization ; X(3872): branching ratio ; data analysis method ; numerical calculations ; B --> D0 anti-D0 K pi0

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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