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Perturbative approach to the penguin-induced B ->pi phi decay

Melić, Blaženka (1999) Perturbative approach to the penguin-induced B ->pi phi decay. Physical Review D, 59 (7). 074005-1-074005-16. ISSN 1550-7998

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Abstract

Using a modified perturbative approach that includes the Sudakov resummation and transverse degrees of freedom we analyze the penguin-induced B- --> pi(-)phi decay by applying the next-to-leading order effective weak Hamiltonian. The modified perturbative method enables us to include nonfactorizable contributions and to control virtual momenta appearing in the process. In addition, we apply the three-scale factorization theorem for nonleptonic processes that offers the possibility of having the scale-independent product of short- and long-distance parts in the amplitude of the weak Hamiltonian. The calculation supports the results obtained in the BSW factorization approach, illustrating the electroweak penguin dominance and the branching ratio of order O(10(-8)). However, the estimated prediction of 16% for the CP asymmetry is much larger than that obtained in the factorization approach.

Item Type: Article
Uncontrolled Keywords: heavy meson decays; su(3) symmetry-breaking; pion form-factor; leading logarithmic approximation; quark distribution amplitude; induced b-decays; exclusive processes; quantum chromodynamics; asymptotic-behavior; cp asymmetries
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions: Theoretical Physics Division
Projects:
Project titleProject leaderProject codeProject type
Teorijska istraživanja osobina fundamentalnih česticaBranko Guberina00980102MZOS
Depositing User: Blaženka Melić
Date Deposited: 07 Oct 2013 09:46
Last Modified: 15 Feb 2016 12:48
URI: http://fulir.irb.hr/id/eprint/729
DOI: 10.1103/PhysRevD.59.074005

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