Generalized (ρ,θ)-η-B-vexity and generalized (ρ,θ)-η-B-preinvexity
نویسندگان
چکیده
منابع مشابه
- η , η ′ Mixing in B → ππ
An isospin analysis of B → ππ decays yields sin 2α, where α ≡ arg[−VtdV ∗ tb/(VudV ∗ ub)] and Vij is a CKM matrix element, without hadronic uncertainty if isospin is a perfect symmetry. Isospin, however, is broken not only by electroweak effects but also by the u and d quark mass difference. The latter drives π − η, η mixing and converts the isospin-perfect triangle relation between the B → ππ ...
متن کاملA possible gateway to η b : χ b 0 ( 2 P ) → η η
A possible gateway to η b : χ b0 (2P) → η η b Abstract It is argued that the branching ratio for the decay χ b0 (2P) → η η b can reach few permil as a result of the enhancement of the η emission by the axial anomaly in QCD. This might make the discussed process practical for an experimental search for the η b .
متن کاملAMPLITUDE RELATIONS FOR B DECAYS INVOLVING η and η ′ 1
A class of amplitude relations for decays of B mesons is discussed. Processes involving η and η in the final state are shown to provide useful information about weak phases in some cases even in the presence of octet-singlet mixing in these states. Some of the relations are unaffected by first-order SU(3) breaking. The decays of B mesons can provide unique insights into the details of the weak ...
متن کاملEvidence for the η(b)(2S) and observation of h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ.
We report the first evidence for the η(b)(2S) using the h(b)(2P)→η(b)(2S)γ transition and the first observation of the h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ transitions. The mass and width of the η(b)(1S) and η(b)(2S) are measured to be m(η(b)(1S))=(9402.4±1.5±1.8) MeV/c(2), m(η(b)(2S))=(9999.0±3.5(-1.9)(+2.8)) MeV/c(2), and Γ(η(b)(1S))=(10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b...
متن کاملCharmless B Decays to η ′ and η Hai
Exclusive charmless B decays to η and η are studied in the standard effective Hamiltonian approach. The effective coefficients that take into account nonfactorizable effects in external and internal W -emission amplitudes are fixed by experiment. Factorization is applied to the matrix elements of QCD, electroweak penguin operators and next-to-leading corrections to penguin Wilson coefficients, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematical Inequalities & Applications
سال: 2007
ISSN: 1331-4343
DOI: 10.7153/mia-10-41