First observations of the rare decays B+ → K+ π+ π− μ+ μ− and B+ → ϕ K+ 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{−0.27}{+0.29}(stat) ± 0.21(syst) ± 0.18(norm)) × 10^−7, B(B+ → ϕ K+ μ+ μ−) = (0.82{−0.17}{+0.19}(stat){−0.04}{+0.10}(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−.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). First Observations of the Rare Decays B+ → K+ π+ π− μ+ μ− and B+ → ϕ K+ μ+ μ−. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10), 0-17 [10.1007/JHEP10(2014)064].

First Observations of the Rare Decays B+ → K+ π+ π− μ+ μ− and B+ → ϕ K+ μ+ μ−

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

First observations of the rare decays B+ → K+ π+ π− μ+ μ− and B+ → ϕ K+ 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{−0.27}{+0.29}(stat) ± 0.21(syst) ± 0.18(norm)) × 10^−7, B(B+ → ϕ K+ μ+ μ−) = (0.82{−0.17}{+0.19}(stat){−0.04}{+0.10}(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−.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). First Observations of the Rare Decays B+ → K+ π+ π− μ+ μ− and B+ → ϕ K+ μ+ μ−. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10), 0-17 [10.1007/JHEP10(2014)064].
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...espandi
File in questo prodotto:
File Dimensione Formato  
2014-AR-48-First_Observ_of_the_Rare_Dec_Bp_to_Kp_pip_pim_mup_mum_and-JHEP.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 659.67 kB
Formato Adobe PDF
659.67 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/355321
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 10
social impact