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Title: New predictions for inclusive heavy-quarkonium P-wave decays
Author: Brambilla, Nora
Eiras, Dolors
Pineda, Antonio (Pineda Ruiz)
Soto Riera, Joan
Vairo, Antonio
Keywords: Cromodinàmica quàntica
Fenomenologia (Física)
Partícules (Física nuclear)
Quantum chromodynamics
Phenomenological theory (Physics)
Particles (Nuclear physics)
Issue Date: 2002
Publisher: American Physical Society
Abstract: We show that some nonrelativistic quantum chromodynamics color-octet matrix elements can be written in terms of (derivatives of) wave functions at the origin and of nonperturbative universal constants once the factorization between the soft and ultrasoft scales is achieved by using an effective field theory where only ultrasoft degrees of freedom are kept as dynamical entities. This allows us to derive a new set of relations between inclusive heavy-quarkonium P-wave decays into light hadrons with different principal quantum numbers and with different heavy flavors. In particular, we can estimate the ratios of the decay widths of bottomonium P-wave states from charmonium data.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2002, vol. 88, núm. 1, p. 012003-1-012003-4
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ISSN: 0370-2693
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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