A Search for B + → K + νν with BABAR
نویسنده
چکیده
The study of flavor-changing neutral current decays is of fundamental interest. They provide a sensitive window in which to search for possible new physics effects beyond the Standard Model of particle physics. Measurements of these processes at rates significantly above the Standard Model would point, unambiguously, to new physics. One such decay of interest is B+ → K+νν . Herein, we discuss the search for this decay mode using 56 million BB decays, a dataset approximately 5 times greater than has previously been used to search for this mode. This search exploits a new technique in which a B− → D0 −ν X decay, which provides both high efficiency and good purity, is used to reconstruct the companion B in the event leaving the remainder to search for a signal consistent with coming from a B+ → K+νν decay.
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