Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/12824
Title: New predictions for inclusive heavy-quarkonium P-wave decays
Author: Brambilla, Nora
Eiras, Dolors
Pineda, Antonio
Soto Riera, Joan
Vairo, Antonio
Keywords: Cromodinàmica quàntica
Fenomenologia (Física)
Partícules (Física nuclear)
Quarks
Quantum chromodynamics
Phenomenological theory (Physics)
Particles (Nuclear physics)
Quarks
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 http://dx.doi.org/10.1103/PhysRevLett.88.012003
It is part of: Physical Review Letters, 2002, vol. 88, núm. 1, p. 012003-1-012003-4
URI: http://hdl.handle.net/2445/12824
ISSN: 0370-2693
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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