# Angular analysis of the B 0 → K *0 μ + μ − decay: using 3 fb−1 of integrated luminosity

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### Abstract

An angular analysis of the $B^{0}\rightarrow K^{*0}(\rightarrow K^{+}\pi^{-})\mu^{+}\mu^{-}$ decay is presented. The dataset corresponds to an integrated luminosity of $3.0\,{\mbox{fb}^{-1}}$ of $pp$ collision data collected at the LHCb experiment. The complete angular information from the decay is used to determine $C\!P$-averaged observables and $C\!P$ asymmetries, taking account of possible contamination from decays with the $K^{+}\pi^{-}$ system in an S-wave configuration. The angular observables and their correlations are reported in bins of $q^2$, the invariant mass squared of the dimuon system. The observables are determined both from an unbinned maximum likelihood fit and by using the principal moments of the angular distribution. In addition, by fitting for $q^2$-dependent decay amplitudes in the region \$1.1q^{2}
Original language English Journal of High Energy Physics 104 https://doi.org/10.1007/JHEP02(2016)104 Published - Feb 2016

### Bibliographical note

All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-051.html

• hep-ex

## Bristol Consolidated Grant 2015-9

Goldstein, J.

1/10/1530/09/20

Project: Research

## Consolidated Grant 2012-16

Newbold, D. M. & Rademacker, J. H.

1/10/121/10/16

Project: Research

## Cite this

collaboration, LHC., Aaij, R., Beteta, C. A., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Jr, A. A. A., Amato, S., Amerio, S., Amhis, Y., An, L., ... Zucchelli, S. (2016). Angular analysis of the B 0 → K *0 μ + μ − decay: using 3 fb−1 of integrated luminosity. Journal of High Energy Physics, 104. https://doi.org/10.1007/JHEP02(2016)104