Resolved component of the photon in heavy quark photoproduction
E. Cuautle* ª, I.A. Maldonado–Cervantesª and G. Morab
ª Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70–543, México Distrito Federal 04510, México, *e–mail: ecuautle@nucleares.unam.mx
b DACB, Universidad "Juárez" Autónoma de Tabasco, Apartado Postal 24, Cunduacán Tabasco 86690, México.
Recibido el 2 de abril de 2008 ]]> Aceptado el 27 de enero de 2009
Abstract
Heavy quarks in γ — N interactions are produced mainly by photon–gluon fusion. Nevertheless a small contribution to the total cross section comes from processes like those appearing in heavy quarks hadroproduction through the resolved component of the photon. Here we concentrate on the resolved contributions of the photon to heavy meson photoproduction. We discuss the calculation of the cross section to D's and B's, as well as its dependence on the fragmentation function and the center of mass energy available in the collisions.
Keywords: Heavy meson; production.
Resumen
La producción de sabores pesados en interacciones γ — N son principalmente por fusion fotón–gluón. No obstante, una pequeña contribución a la sección eficaz total viene de procesos similares a los que aparecen en hadroproducción a través de la componente resuelta del fotón. Aquí nos concentramos en la contribución resuelta del fotón y la fotoproducción de mesones pesados. Se discute el cálculo de la sección eficaz de D's y B's, así como su dependencia con las funciones de fragmentación y la energía del centro de masa usado en las colisiones.
Descriptores: Producción de sabores pesados; funciones de fragmentación.
]]> PACS: 13.60.Le
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Acknowledgments
The authors wish to thank G. Paic for his comments. The work has been supported in part by the PAPIIT–UNAM under project number 116508 and CONACyT 52162–F.
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