Angular analysis of charged and neutral B -> K mu(+) mu(-) decays
- Aaij, R.
- Adeva, B.
- Adinolfi, M.
- Affolder, A.
- Ajaltouni, Z.
- Albrecht, J.
- Alessio, F.
- Alexander, M.
- Ali, S.
- Alkhazov, G.
- Alvarez Cartelle, P.
- Alves, A. A.
- Amato, S.
- Amerio, S.
- Amhis, Y.
- An, L.
- Anderlini, L.
- Anderson, J.
- Andreassen, R.
- Andreotti, M.
- Andrews, J. E.
- Appleby, R. B.
- Gutierrez, O. Aquines
- Archilli, F.
- Artamonov, A.
- Artuso, M.
- Aslanides, E.
- Auriemma, G.
- Baalouch, M.
- Bachmann, S.
- Back, J. J.
- Badalov, A.
- Balagura, V.
- Baldini, W.
- Barlow, R. J.
- Barschel, C.
- Barsuk, S.
- Barter, W.
- Batozskaya, V.
- Bauer, Th.
- Bay, A.
- Beddow, J.
- Bedeschi, F.
- Bediaga, I.
- Belogurov, S.
- Belous, K.
- Belyaev, I.
- Ben-Haim, E.
- Onderwater, G.
- Pellegrino, A.
DOIAbstract
The angular distributions of the rare decays B+ -> K+mu(+)mu(-) and B-0 -> K-S(0)mu(+)mu(-) are studied with data corresponding to 3 fb(-1) of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV centre-of-mass energies with the LHCb detector. The angular distribution is described by two parameters, F-H and the forward-backward asymmetry of the dimuon system A(FB), which are determined in bins of the dimuon mass squared. The parameter F-H is a measure of the contribution from (pseudo)scalar and tensor amplitudes to the decay width. The measurements of A(FB) and F-H reported here are the most precise to date and are compatible with predictions from the Standard Model.</p
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