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Colour-Octet Effects in Radiative $\Upsilon$ Decays

We investigate the effects of colour-octet contributions to the radiative framework. Photons coming both from the coupling to hard processes (`direct') and by collinear emission from light quarks (`fragmentation') are consistently included at next-to-leading order (NLO) in $\alpha_s$. An e...

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Detalles Bibliográficos
Autores principales:	Maltoni, Fabio, Petrelli, Andrea
Lenguaje:	eng
Publicado:	1998
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1103/PhysRevD.59.074006 http://cds.cern.ch/record/358030

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