Exclusive radiative and electroweak $b\to d$ and $b\to s$ penguin decays at NLO

By Martin Beneke, T. Feldmann, D. Seidel. 2004

309 citations recorded by the source corpus.

Abstract.We provide standard model expectations for the rare radiative decays $B\to K^*\gamma$, $B\to \rho\gamma$ and $B\to\omega\gamma$, and the electroweak penguin decays $B\to K^*\ell^ + \ell^-$ and $B\to\rho \ell^ + \ell^-$ at the next-to-leading order (NLO), extending our previous results to $b\to d$ transitions. We consider branching fractions, isospin asymmetries and direct CP asymmetries. For the electroweak penguin decays, the lepton-invariant mass spectrum and forward-backward asymmetry is also included. Radiative and electroweak penguin transitions in $b\to d$ are mainly interesting in the search for new flavor-changing neutral current interactions, but in addition the $B\to \rho\gamma$ decays provide constraints on the CKM parameters $(\bar\rho,\bar\eta)$. The potential impact of these constraints is discussed.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/fc8743b213471334ba5bfc62df784dad18376b93

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

In Nuclear and High Energy Physics

Citations in the corpus

On the anomalies in the latest LHCb data (2016, methodology): “On the contrary, no theoretical description of power corrections exists in the exclusive case in the framework of QCD factorisation and SCET, and power corrections can only be guesstimated.”
On B → Vℓℓ at small dilepton invariant mass, power corrections, and new physics (2012, methodology): “A systematic treatment based on QCD factorization exists [23, 29], to leading power in an expansion in Λ/mb.”
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era (2018, result): “Measurements of angular observables in B0→ K∗0μ+μ− decays show a discrepancy with respect to SM predictions [290,291,318–335].”
Model-independent constraints on new physics in b → s transitions (2011, methodology): “6 At low q2, QCD factorisation can be used in the heavy quark limit, which reduces the number of independent form factors from 7 to 2 and allows a systematic calculation of non-factorizable corrections [69, 70].”
B →Vℓ+ℓ− in the Standard Model from light-cone sum rules (2015, methodology): “The latter entail the effect of weak annihilation, the chromomagnetic operator contribution both computed in LCSR [12, 47] as well as hard spectator scattering taken from QCD factorisation [70,71].”
Implications of LHCb measurements and future prospects - eScholarship (2013, background): “The combined limit of a heavy b-quark and an energetic meson M , leads to the schematic form of the decay amplitude [50, 51]:”