Measurement of the branching fractions of the decays D<SUP>+</SUP> → K-K<SUP>+</SUP>K<SUP>+</SUP>, D<SUP>+</SUP> → π-π<SUP>+</SUP> K<SUP>+</SUP> and D<sub>s</sub><SUP>+</SUP> → π<SUP>-</SUP>K<SUP>+</SUP>K<SUP>+</SUP>



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Alkhazov, G
et al (show 790 more authors) (2019) Measurement of the branching fractions of the decays D<SUP>+</SUP> → K-K<SUP>+</SUP>K<SUP>+</SUP>, D<SUP>+</SUP> → π-π<SUP>+</SUP> K<SUP>+</SUP> and D<sub>s</sub><SUP>+</SUP> → π<SUP>-</SUP>K<SUP>+</SUP>K<SUP>+</SUP>. JOURNAL OF HIGH ENERGY PHYSICS, 03 (3). 176-.

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Abstract

The branching fractions of the doubly Cabibbo-suppressed decays $D^+\rightarrow K^-K^+K^+$, $D^+\rightarrow \pi^-\pi^+K^+$ and $D^+_s\rightarrow\pi^-K^+K^+$ are measured using the decays $D^+\rightarrow K^-\pi^+\pi^+$ and $D^+_s\rightarrow K^-K^+\pi^+$ as normalisation channels. The measurements are performed using proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb$^{-1}$. The results are \begin{align} \frac {\mathcal{B}(D^+\rightarrow K^-K^+K^+)} {\mathcal{B}(D^+\rightarrow K^-\pi^+\pi^+)}& = (6.541 \pm 0.025 \pm 0.042) \times 10^{-4},\nonumber \frac {\mathcal{B}(D^+\rightarrow \pi^-\pi^+K^+)} {\mathcal{B}(D^+\rightarrow K^-\pi^+\pi^+)}& = (5.231 \pm 0.009 \pm 0.023) \times 10^{-3}, \nonumber \frac {\mathcal{B}(D^+_s\rightarrow\pi^-K^+K^+)} {\mathcal{B}(D^+_s\rightarrow K^-K^+\pi^+)}& = (2.372 \pm 0.024 \pm 0.025) \times 10^{-3},\nonumber \end{align} where the uncertainties are statistical and systematic, respectively. These are the most precise measurements up to date.

Item Type: Article
Additional Information: 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-2018-033.html
Uncontrolled Keywords: Branching fraction, Charm physics, Flavor physics, Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 20 May 2019 12:42
Last Modified: 10 Oct 2023 16:25
DOI: 10.1007/JHEP03(2019)176
Open Access URL: https://doi.org/10.1007/JHEP03(2019)176
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3042172