|Vub| from exclusive semileptonic B--> rho decays
|Vub| from exclusive semileptonic B--> rho decays
We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.
We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays
high energy physics, phenomenology
326-331
Flynn, Jonathan M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nakagawa, Yoshiyuki
cddf88e3-df7a-4ab6-a0dd-1f84236c7e35
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
Toki, Hiroshi
04b52828-ce22-40b6-b2cc-1cfbbb09972b
15 December 2008
Flynn, Jonathan M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nakagawa, Yoshiyuki
cddf88e3-df7a-4ab6-a0dd-1f84236c7e35
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
Toki, Hiroshi
04b52828-ce22-40b6-b2cc-1cfbbb09972b
Flynn, Jonathan M., Nakagawa, Yoshiyuki, Nieves, Juan and Toki, Hiroshi
(2008)
|Vub| from exclusive semileptonic B--> rho decays.
Physics Letters B, 675, .
(doi:10.1016/j.physletb.2009.04.037).
Abstract
We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.
We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays
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Published date: 15 December 2008
Keywords:
high energy physics, phenomenology
Identifiers
Local EPrints ID: 144007
URI: http://eprints.soton.ac.uk/id/eprint/144007
ISSN: 0370-2693
PURE UUID: 42e3f6f2-44fd-4d53-8be7-3ea2f9e2946d
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Date deposited: 14 Apr 2010 13:59
Last modified: 14 Mar 2024 02:36
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Contributors
Author:
Yoshiyuki Nakagawa
Author:
Juan Nieves
Author:
Hiroshi Toki
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