Título:
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The BES f(0)(1810): a new glueball candidate
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Autores:
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Llanes Estrada, Felipe José ;
Bicudo, P. ;
Cotanch, S.R. ;
Robertson, D.G
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Tipo de documento:
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texto impreso
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Editorial:
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Springer, 2007-10
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física
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Tipo = Artículo
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Resumen:
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We analyze the f(0)(1810) state recently observed by the BES collaboration via radiative J/psi decay to a resonant phi omega spectrum and confront it with DM2 data and glueball theory. The DM2 group only measured omega omega decays and reported a pseudoscalar but no scalar resonance in this mass region. A rescattering mechanism from the open flavored K (K) over bar decay channel is considered to explain why the resonance is only seen in the flavor asymmetric omega phi branch along with a discussion of positive C-parity charmonia decays to strengthen the case for preferred open flavor glueball decays. We also calculate the total decay width of a glueball with this mass to be roughly 100 M (K) over bar eV, in agreement with the narrow, newly found f(0), and smaller than the expected estimate of 200-400 MeV. We conclude that this discovered scalar hadron deserves further experimental investigation, especially in the K channel, and if shown to be different from the f(0)(1710), will become a solid glueball candidate. Finally we comment on other, but less likely, possible assignments for this state.
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En línea:
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https://eprints.ucm.es/id/eprint/22946/1/Llanes-Estrada_FJ33.pdf
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