Symmetry-breaking corrections to heavy-to-light B meson form factors at large recoil
By Martin Beneke, T. Feldmann. 2000
486 citations recorded by the source corpus.
Recently it has been shown that symmetries emerging in the heavy quark and large recoil energy limit impose various relations on form factors that parameterize the decay of B mesons into light mesons. These symmetries are broken by perturbative effects. In this paper we discuss the structure of heavy-to-light form factors including such effects and compute symmetry-breaking corrections to first order in the strong coupling. As an application of our results we consider the forward–backward asymmetry zero in the rare decay B→Vl+l− and the possibility to constrain potential new physics contributions to the Wilson coefficient C9.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/f28aa28b5aac16a77d3304535dbf84b03a20a88a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nuclear and High Energy Physics
Citations in the corpus
- Review of lepton universality tests in B decays (2018, background): “The resulting effective field theories (respectively Soft-Collinear Effective Theory [50–53] and Heavy-Quark Effective Theory [54–56]) can be used to provide approximate relationships between the form factors and thus reduce the number of independent hadronic inputs needed.”
- On the impact of power corrections in the prediction of B → K*μ+μ− observables (2014, methodology): “factors in terms of two soft form factors receives αs corrections (coming from hard-gluon exchanges) and 1/mb power corrections (due to soft-gluon exchanges) [29, 33].”
- Optimizing the basis of B → K*ℓ+ℓ− observables in the full kinematic range (2013, background): “3), with F = ξ‖,⊥, and the input values given in table 2 (see figure 2), all form factors follow using [38, 39]”
- Global analysis of b → sℓℓ anomalies (2015, methodology): “First we take the three hadronic form factors Ti(q(2)) that parametrise the matrix element 〈Kγ|Heff |B〉 [39], and we single out the hadronic contribution that is not related to the radiative Wilson coefficients (obtained taking the limit T had i = Ti|C7(′)→0).”
- Power-enhanced leading-logarithmic QED corrections to Bq→ μ+μ− (2019, background): “The definition of the B-meson decay constant and LCDA in the presence of QED corrections is discussed in Section 5.”
- B →Vℓ+ℓ− in the Standard Model from light-cone sum rules (2015, methodology): “Once could easily expect the theory error to do down by a factor of two by doing so which would result in RK∗φ|[1,6] 1 within uncertainties.”
- Flavor Physics in the Quark Sector (2009, background): “where ξ⊥,‖ are universal form factors arising in the combined heavy-quark-mass and large-recoil-energy limit [769, 770], C⊥,‖ and T⊥,‖ are perturbative coefficient functions including vertex corrections and spectator effects, respectively, and φB and φK∗ denote hadronic LCDAs which again have to be ”
- B → K∗ℓ+ℓ− decays at large recoil in the Standard Model: a theoretical reappraisal (2015, methodology): “The description of the remaining part of the spectrum is simplified using the heavy quark expansion at low dilepton invariant mass q2 [11, 12], while an Operator Product Expansion (OPE) can be used at large q2 [13–16].”