Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/185620
Title: | First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-) |
Author: | Comerma-Montells, A. Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, E. Rives Molina, V. Ruiz, Hugo LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Oct-2014 |
Publisher: | Springer Verlag |
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 8 TeV. The branching fractions of the decays are B(B +→K+π +π −µ +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 −. Keywords: Rare decay, Hadron-Hadron Scattering, B physics, Flavor physi |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP10(2014)064 |
It is part of: | Journal of High Energy Physics, 2014, vol. 10, num. 064, p. 1-18 |
URI: | http://hdl.handle.net/2445/185620 |
Related resource: | https://doi.org/10.1007/JHEP10(2014)064 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
645740.pdf | 659.67 kB | Adobe PDF | View/Open |
This item is licensed under a
Creative Commons License