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T: Fachverband Teilchenphysik

T 43: CP-Verletzung und Mischungswinkel 2

T 43.4: Talk

Wednesday, March 6, 2013, 17:30–17:45, GER-054

Search for the charmless decay B → K_s⁰ K^*0 at the LHCb experiment — •Marianna Fontana, Michael Schmelling, Markward Britsch, Dmytro Volyanskyy, Osvaldo Aquines, and Dmitry Popov — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

The study of charmless B decays into double neutral kaons is a fertile ground in the search for new physics. These pure penguin decays allow for measurements of CP violation which are sensitive probe for phases from non-standard model physics.

The LHCb experiment is a forward spectrometer operating at the Large Hadron Collider at CERN, optimized for the study of B mesons. Until the first long shutdown, LHCb collected over 3 fb⁻¹, which provides unprecedented large samples of B hadron decays. As a first step we present here the search for the decays of both B⁰ and B_s mesons into K_S⁰ K^*0 final states which have not yet observed before, aiming at a branching fraction measurement relative to the well established B⁰ → K_S⁰π+π⁻ mode.