Semileptonic bc to cc Baryon Decay and Heavy Quark Spin Symmetry
Semileptonic bc to cc Baryon Decay and Heavy Quark Spin Symmetry
We study the semileptonic decays of the lowest-lying bc baryons to the lowest-lying cc baryons
(b0c ! cc and 0 bc ! cc), in the limit mb;mc QCD and close to the zero-recoil point. The
separate heavy quark spin symmetries make it possible to describe all these decays using a single form
factor. We recover results derived previously by White and Savage in a manner which we think is more
straightforward and parallels the method applied later to study Bc semileptonic decays. We further discuss
the resemblance between the bc baryon decays and those of Bc mesons to c and J= mesons and
comment on the relation between the slopes of the single functions describing each set of decays. Our
results can straightforwardly be applied to the decays of bb baryons to bc baryons.
017502-[4pp]
Flynn, Jonathan. M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
2007
Flynn, Jonathan. M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
Flynn, Jonathan. M. and Nieves, Juan
(2007)
Semileptonic bc to cc Baryon Decay and Heavy Quark Spin Symmetry.
Physical Review D, 76 (1), .
(doi:10.1103/PhysRevD.76.017502).
Abstract
We study the semileptonic decays of the lowest-lying bc baryons to the lowest-lying cc baryons
(b0c ! cc and 0 bc ! cc), in the limit mb;mc QCD and close to the zero-recoil point. The
separate heavy quark spin symmetries make it possible to describe all these decays using a single form
factor. We recover results derived previously by White and Savage in a manner which we think is more
straightforward and parallels the method applied later to study Bc semileptonic decays. We further discuss
the resemblance between the bc baryon decays and those of Bc mesons to c and J= mesons and
comment on the relation between the slopes of the single functions describing each set of decays. Our
results can straightforwardly be applied to the decays of bb baryons to bc baryons.
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Published date: 2007
Organisations:
Physics & Astronomy
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Local EPrints ID: 144001
URI: http://eprints.soton.ac.uk/id/eprint/144001
ISSN: 1550-7998
PURE UUID: b961ac92-3879-4202-86d7-b1875599a698
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Date deposited: 14 Apr 2010 13:46
Last modified: 14 Mar 2024 02:36
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Author:
Juan Nieves
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