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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A QCD sum rule approach to the charmonium - pion cross section

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Author(s):
M. Nielsen ; F.S. Navarra ; G. Krein ; R.S. Marques de Carvalho
Total Authors: 4
Document type: Journal article
Source: Brazilian Journal of Physics; v. 33, n. 2, p. 316-319, Jun. 2003.
Abstract

We study the Borel sum rule for the tensor amplitude of the processes J/<FONT FACE=Symbol>y p ®</FONT> <IMG SRC="/img/revistas/bjp/v33n2/a30img01.gif" >D*,<IMG SRC="/img/revistas/bjp/v33n2/a30img01.gif"> D, <IMG SRC="/img/revistas/bjp/v33n2/a30img01.gif" >*D* and <IMG SRC="/img/revistas/bjp/v33n2/a30img01.gif" >D*. We also evaluate the cross sections as a function of <IMG SRC="/img/revistas/bjp/v33n2/a30img02.gif" >. We find that our results are smaller than the J/<FONT FACE=Symbol>y p ®</FONT> charmed mesons cross sections obtained with models based on meson exchange, but are close to those obtained with quark exchange models. (AU)

FAPESP's process: 98/06590-2 - Hadrons' Physics
Grantee:Manoel Roberto Robilotta
Support type: Research Projects - Thematic Grants
FAPESP's process: 99/12987-5 - Relativistic heavy-ion collisions
Grantee:Alejandro Szanto de Toledo
Support type: Research Projects - Thematic Grants