Search for $\boldsymbol{B\to h\nu\bar{\nu}}$ decays with semileptonic tagging at Belle

By J. Grygier, P. Goldenzweig, M. Heck, I. Adachi, H. Aihara, S. Said, D. Asner, T. Aushev, R. Ayad, T. Aziz and 196 more. 2017

162 citations recorded by the source corpus.

We present the results of a search for the rare decays B -> h nu(nu) over bar, where h stands for K+, K-S(0), K*(+); K*(0); pi(+); pi(0), rho(+) and rho(0). The results are obtained with 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We reconstruct one B meson in a semileptonic decay and require a single h meson but nothing else on the signal side. We observe no significant signal and set upper limits on the branching fractions. The limits set on the B-0 -> K-S(0)nu(nu) over bar, B-0 -> K*(0)nu(nu) over bar, B+ -> pi(+)nu(nu) over bar, B-0 -> pi(0)nu(nu) over bar, B+ -> rho(+)nu(nu) over bar, and B-0 -> rho(0)nu(nu) over bar channels are the world's most stringent.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c9c072e8fe413cf579d45f1f9cd0309accaf66c8