منابع مشابه
Nonresonant Contributions in B → ρπ Decay
We consider nonresonant contributions in the Dalitz plot analysis of B → ρπ → π+π−π0 decay and their potential impact on the extraction of the CKM parameter α. In particular, we examine the role of the heavy mesons B∗ and B0, via the process B → π(B∗, B0) → π+π−π0, and their interference with resonant contributions in the ρ-mass region. We discuss the inherent uncertainties and suggest that the...
متن کاملCharmless 3-body B Decays: Resonant and Nonresonant Contributions
Charmless 3-body decays of B mesons are studied using a simple model based on the framework of the factorization approach. We have identified a large source of the nonresonant signal in the matrix elements of scalar densities, e.g. 〈KK|s̄s|0〉. This explains the dominance of the nonresonant background in B → KKK decays, the sizable nonresonant fraction of order (35 ∼ 40)% in Kππ and K 0 ππ modes ...
متن کاملResonant and nonresonant contributions to the weak D → V l + l − decays
The Cabibbo suppressed decays D → V l + l − (V is light vector meson) present in principle the opportunity to observe the short distance FCNC transition c → ul + l − , which is sensitive to physics beyond the Standard Model. We analyze these as well as the Cabibbo allowed D → V l + l − decays within the Standard Model, where in addition to the short distance dynamics also the long distance dyna...
متن کاملElucidating the spectral and temporal contributions from the resonant and nonresonant response to femtosecond coherent anti-Stokes Raman scattering.
A theoretical expression is developed for femtosecond coherent anti-Stokes Raman scattering (CARS) to quantitatively account for the vibrational line shape in the presence of nonresonant signal. The contributions of the resonant and nonresonant components are extracted from the emitted signal line shape as a function of Stokes wavelength and as a function of the temporal overlap of the two pump...
متن کاملNonresonant Excitation of the Forced Duffing Equation
We investigate the hard nonresonant excitation of the forced Duffing equation with a positive damping parameter E. Using the symbolic manipulation system MACSYMA, a computer algebra system. we derive the two term perturbation expansion by the method of multiple time scales. The resulting approximate solution is valid for small values of the coefficient e As the damping parameter e increases, th...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.034019