title: Weak annihilation and new physics in charmless [Formula: see text] decays.
abstract: We use currently available data of nonleptonic charmless 2-body [Formula: see text] decays ([Formula: see text]) that are mediated by [Formula: see text] QCD- and QED-penguin operators to study weak annihilation and new-physics effects in the framework of QCD factorization. In particular we introduce one weak-annihilation parameter for decays related by [Formula: see text] quark interchange and test this universality assumption. Within the standard model, the data supports this assumption with the only exceptions in the [Formula: see text] system, which exhibits the well-known "[Formula: see text] puzzle", and some tensions in [Formula: see text]. Beyond the standard model, we simultaneously determine weak-annihilation and new-physics parameters from data, employing model-independent scenarios that address the "[Formula: see text] puzzle", such as QED-penguins and [Formula: see text] current-current operators. We discuss also possibilities that allow further tests of our assumption once improved measurements from LHCb and Belle II become available.
authors.affiliation: Technische Universität München, Institute for Advanced Study, Lichtenbergstraße 2a, 85748 Garching, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Bobeth
authors.affiliation: Department of Mathematical Sciences, University of Liverpool, Liverpool, L69 3BX UK.
authors.forename: Martin
authors.initials: M
authors.lastname: Gorbahn
authors.affiliation: Technische Universität München, Excellence Cluster Universe, Boltzmannstraße 2, 85748 Garching, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Vickers