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Options for the SELEX state D$_{s\J}^+(2632)$

We consider possible assignments for the D$_{s\J}^+(2632)$, which was recently reported in D$_s^+\eta$ and D$^0$K$^+$ final states by the SELEX Collaboration at Fermilab. The most plausible quark model assignment for this state is the first radial excitation ($2^3\S_1$) of the $c\bar s$ D$_s^*(2112)...

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Detalles Bibliográficos
Autores principales: Barnes, T, Close, Francis Edwin, Dudek, J J, Godfrey, S, Swanson, E S
Lenguaje:eng
Publicado: 2004
Materias:
Acceso en línea:http://cds.cern.ch/record/772799
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author Barnes, T
Close, Francis Edwin
Dudek, J J
Godfrey, S
Swanson, E S
author_facet Barnes, T
Close, Francis Edwin
Dudek, J J
Godfrey, S
Swanson, E S
author_sort Barnes, T
collection CERN
description We consider possible assignments for the D$_{s\J}^+(2632)$, which was recently reported in D$_s^+\eta$ and D$^0$K$^+$ final states by the SELEX Collaboration at Fermilab. The most plausible quark model assignment for this state is the first radial excitation ($2^3\S_1$) of the $c\bar s$ D$_s^*(2112)$, although the predicted mass and strong decay branching fractions for this assignment are not in agreement with the SELEX data. The reported dominance of D$_s\eta$ over DK appears especially problematic. An intriguing similarity to the K$^*(1414)$ is noted. $2^3\S_1$--$^3\D_1$ configuration mixing is also considered, and we find that this effect is unlikely to resolve the branching fraction discrepancy. Other interpretations as a $c\bar s$-hybrid or a two-meson molecule are also considered, but appear unlikely. Thus, if this state is confirmed, it will require reconsideration of the systematics of charmed meson spectroscopy and strong decays.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
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spelling cern-7727992019-09-30T06:29:59Zhttp://cds.cern.ch/record/772799engBarnes, TClose, Francis EdwinDudek, J JGodfrey, SSwanson, E SOptions for the SELEX state D$_{s\J}^+(2632)$Particle Physics - PhenomenologyWe consider possible assignments for the D$_{s\J}^+(2632)$, which was recently reported in D$_s^+\eta$ and D$^0$K$^+$ final states by the SELEX Collaboration at Fermilab. The most plausible quark model assignment for this state is the first radial excitation ($2^3\S_1$) of the $c\bar s$ D$_s^*(2112)$, although the predicted mass and strong decay branching fractions for this assignment are not in agreement with the SELEX data. The reported dominance of D$_s\eta$ over DK appears especially problematic. An intriguing similarity to the K$^*(1414)$ is noted. $2^3\S_1$--$^3\D_1$ configuration mixing is also considered, and we find that this effect is unlikely to resolve the branching fraction discrepancy. Other interpretations as a $c\bar s$-hybrid or a two-meson molecule are also considered, but appear unlikely. Thus, if this state is confirmed, it will require reconsideration of the systematics of charmed meson spectroscopy and strong decays.hep-ph/0407120oai:cds.cern.ch:7727992004
spellingShingle Particle Physics - Phenomenology
Barnes, T
Close, Francis Edwin
Dudek, J J
Godfrey, S
Swanson, E S
Options for the SELEX state D$_{s\J}^+(2632)$
title Options for the SELEX state D$_{s\J}^+(2632)$
title_full Options for the SELEX state D$_{s\J}^+(2632)$
title_fullStr Options for the SELEX state D$_{s\J}^+(2632)$
title_full_unstemmed Options for the SELEX state D$_{s\J}^+(2632)$
title_short Options for the SELEX state D$_{s\J}^+(2632)$
title_sort options for the selex state d$_{s\j}^+(2632)$
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/772799
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AT closefrancisedwin optionsfortheselexstatedsj2632
AT dudekjj optionsfortheselexstatedsj2632
AT godfreys optionsfortheselexstatedsj2632
AT swansones optionsfortheselexstatedsj2632