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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$_s^*(2112)...
Autores principales: | , , , , |
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Lenguaje: | eng |
Publicado: |
2004
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/772799 |
_version_ | 1780904293975457792 |
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author | Barnes, T Close, Francis Edwin Dudek, J J Godfrey, S Swanson, E S |
author_facet | Barnes, T Close, Francis Edwin Dudek, J J Godfrey, S Swanson, E S |
author_sort | Barnes, T |
collection | CERN |
description | We consider possible assignments for the D$_{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. |
id | cern-772799 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2004 |
record_format | invenio |
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 |
work_keys_str_mv | AT barnest optionsfortheselexstatedsj2632 AT closefrancisedwin optionsfortheselexstatedsj2632 AT dudekjj optionsfortheselexstatedsj2632 AT godfreys optionsfortheselexstatedsj2632 AT swansones optionsfortheselexstatedsj2632 |