First observations of the rare decays B+→ K+π+π-μ+μ-and B+→ φK+μ+μ-

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. AndersonR. Andreassen, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
30 Downloads (Pure)

Abstract

First observations of the rare decays B+→ K+π+π-μ+μ-and B+→ φK+μ+μ-are presented using data corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The branching fractions of the decays are B(B+→K+π+πµ+µ) = (4.36 +0.29−0.27 (stat) ± 0.21 (syst) ± 0.18 (norm)) × 10−7, B(B+→φK+µ+µ) = 0.82+0.19−0.17 (stat) +0.10−0.04 (syst) ± 0.27 (norm)) × 10−7,  where the uncertainties are statistical, systematic, and due to the uncertainty on the branching fractions of the normalisation modes. A measurement of the differential branching fraction in bins of the invariant mass squared of the dimuon system is also presented for the decay B+→ K+π+π-μ+μ-.

Original languageEnglish
Article number64
Number of pages18
JournalJournal of High Energy Physics
Volume2014
Issue number10
DOIs
Publication statusPublished - 9 Oct 2014

Keywords

  • B physics
  • Flavor physics
  • Hadron-Hadron Scattering
  • Rare decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'First observations of the rare decays B<sup>+</sup>→ K<sup>+</sup>π<sup>+</sup>π<sup>-</sup>μ<sup>+</sup>μ<sup>-</sup>and B<sup>+</sup>→ φK<sup>+</sup>μ<sup>+</sup>μ<sup>-</sup>'. Together they form a unique fingerprint.

Cite this