Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond

By W. Altmannshofer, P. Ball, Aoife Bharucha, Andrzej Buras, David M. Straub, Michael Wick. 2008

414 citations recorded by the source corpus.

The rare decay B → K*(→ Kπ)μ+μ− is regarded as one of the crucial channels for B physics as the polarization of the K* allows a precise angular reconstruction resulting in many observables that offer new important tests of the Standard Model and its extensions. These angular observables can be expressed in terms of CP-conserving and CP-violating quantities which we study in terms of the full form factors calculated from QCD sum rules on the light-cone, including QCD factorization corrections. We investigate all observables in the context of the Standard Model and various New Physics models, in particular the Littlest Higgs model with T-parity and various MSSM scenarios, identifying those observables with small to moderate dependence on hadronic quantities and large impact of New Physics. One important result of our studies is that new CP-violating phases will produce clean signals in CP-violating asymmetries. We also identify a number of correlations between various observables which will allow a clear distinction between different New Physics scenarios.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/06c7b895e8ad6d50a85d2e0c7d235edd6da81f59

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

Lepton universality violation with lepton flavor conservation in B-meson decays (2015, neutral): “[4, 77–80] and references therein).”
On B → Vℓℓ at small dilepton invariant mass, power corrections, and new physics (2012, methodology): “This is easily achieved [39] through the completeness relation (see Appendix A.”
Differential branching fraction and angular analysis of the decay B0 → K∗0μ+μ− (2013, background): “lt;2:0GeV2=c4 bin. In this bin, the angular terms receive an additional q2 dependence, proportional to 1 4m2 =q 2 1 + 2m2 =q2 or (1 4m2 =q 2)1=2 1 + 2m2 =q2 ; (6) depending on the angular term Ij [1]. As q2 tends to zero, these threshold terms become small and reduce the sensitivity to the angular o”
Anatomy and phenomenology of FCNC and CPV effects in SUSY theories (2009, methodology): “ i. In our analysis, we consider the T-odd CP asymmetries A 7, A 8 and A 9 which are not suppressed by small strong phases and can thus be sizable in the presence of new sources of CP violation (CPV) [141, 140]. We use the conventions of [140] to which we refer for the full expressions of the asymme”
Differential branching fraction and angular analysis of the decay $B_s^0\to\phi\mu^{+}\mu^{-}$ (2013, methodology): “ars include statistical and systematic uncertainties added in quadrature. The solid curves are the leading order SM predictions, using the Wilson coecients and leading order amplitudes given in Ref. [2], as well as the form factor calculations in Ref. [16]. B0 s mixing is included as described in Re”
Model-independent constraints on new physics in b → s transitions (2011, methodology): “One thus arrives at [55]”