Nonresonant Contributions in B to Rho Pi Decay
Title | Nonresonant Contributions in B to Rho Pi Decay PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2002 |
Genre | |
ISBN |
We consider nonresonant contributions in the Dalitz plot analysis of B[yields][rho][pi][yields][pi][sup+][pi][sup -][pi][sup 0] decay and their potential impact on the extraction of the CKM parameter[alpha]. In particular, we examine the role of the heavy mesons B* and B[sub 0], via the process B[yields][pi](B*, B[sub 0])[yields][pi][sup+][pi][sup -][pi][sup 0], and their interference with resonant contributions in the[rho]-mass region. We discuss the inherent uncertainties and suggest that the effects may be substantially smaller than previously indicated.
B [right Pointing Arrow] Rho Pi Decays, Resonant and Nonresonant Contributions
Title | B [right Pointing Arrow] Rho Pi Decays, Resonant and Nonresonant Contributions PDF eBook |
Author | A. Deandrea |
Publisher | |
Pages | |
Release | 2000 |
Genre | |
ISBN |
Nonfactorizable Contributions to B [yields] [pi][pi] Decays
Title | Nonfactorizable Contributions to B [yields] [pi][pi] Decays PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2004 |
Genre | |
ISBN |
We investigate to what extent the experimental information on B [yields] [pi][pi] branching fractions and CP asymmetries can be used to better understand the QCD dynamics in these decays. For this purpose we decompose the independent isospin amplitudes into factorizable and non-factorizable contributions. The former can be estimated within the framework of QCD factorization for exclusive B decays. The latter vanish in the heavy-quark limit, m[sub b] [yields] [infinity], and are treated as unknown hadronic parameters. We discuss at some length in which way the non-factorizable contributions are treated in different theoretical and phenomenological frameworks. We point out the potential differences between the phenomenological treatment of power-corrections in the ''BBNS approach'', and the appearance of power-suppressed operators in soft-collinear effective theory (SCET). On that basis we define a handful of different (but generic) scenarios where the non-factorizable part of isospin amplitudes is parameterized in terms of three or four unknowns, which can be constrained by data. We also give some short discussion on the implications of our analysis for B [yields] [pi]K decays. In particular, since non-factorizable QCD effects in B [yields] [pi][pi] may be large, we cannot exclude sizeable non-factorizable effects, which violate SU(3)[sub F] flavour symmetry, or even isospin symmetry (via long-distance QED effects). This may help to explain certain puzzles in connection with isospin-violating observables in B [yields] [pi]K decays.
Nonfactorizable Contributions to B 2![pi][pi] Decays
Title | Nonfactorizable Contributions to B 2![pi][pi] Decays PDF eBook |
Author | |
Publisher | |
Pages | 5 |
Release | 2004 |
Genre | |
ISBN |
We investigate to what extent the experimental information on B → [pi][pi] branching fractions and CP asymmetries can be used to better understand the QCD dynamics in these decays. For this purpose we decompose the independent isospin amplitudes into factorizable and non-factorizable contributions. The former can be estimated within the framework of QCD factorization for exclusive B decays. The latter vanish in the heavy-quark limit, m{sub b} → ∞, and are treated as unknown hadronic parameters. We discuss at some length in which way the non-factorizable contributions are treated in different theoretical and phenomenological frameworks. We point out the potential differences between the phenomenological treatment of power-corrections in the ''BBNS approach'', and the appearance of power-suppressed operators in soft-collinear effective theory (SCET). On that basis we define a handful of different (but generic) scenarios where the non-factorizable part of isospin amplitudes is parameterized in terms of three or four unknowns, which can be constrained by data. We also give some short discussion on the implications of our analysis for B → [pi]K decays. In particular, since non-factorizable QCD effects in B → [pi][pi] may be large, we cannot exclude sizeable non-factorizable effects, which violate SU(3){sub F} flavour symmetry, or even isospin symmetry (via long-distance QED effects). This may help to explain certain puzzles in connection with isospin-violating observables in B → [pi]K decays.
Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector
Title | Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector PDF eBook |
Author | Jinwei Wu |
Publisher | |
Pages | 208 |
Release | 2005 |
Genre | |
ISBN |
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 1252 |
Release | 1968 |
Genre | Aeronautics |
ISBN |
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Nuclear Physics
Title | Nuclear Physics PDF eBook |
Author | |
Publisher | |
Pages | 894 |
Release | 1996 |
Genre | Nuclear physics |
ISBN |