Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi K^{+})/\mathcal{B}(B_c^{+}\to J/\psi {\pi }^{+})$

Abstract

The ratio of branching fractions $R_{K/\pi }\equiv \mathcal{B}(B_c^{+}\to J/\psi K^{+})/\mathcal{B}(B_c^{+}\to J/\psi {\pi }^{+})$ is measured with $pp$ collision data collected by the LHCb experiment at centre-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3${\mbox{fb}^{-1}}$. It is found to be $R_{K/\pi }=0.079\pm 0.007\pm 0.003$, where the first uncertainty is statistical and the second is systematic. This measurement is consistent with the previous LHCb result, while the uncertainties are significantly reduced.

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-2016-020.html

References in corpus (3)

• PYTHIA 6.4 Physics and Manual
• Big-Bang Nucleosynthesis
• Exclusive semileptonic and nonleptonic decays of the Bc meson

Cited by in corpus (30)

• Review of Lepton Universality tests in B decays
• Standard Model-Axion-Seesaw-Higgs Portal Inflation. Five problems of particle physics and cosmology solved in one stroke
• Observation of two excited B${}_{\mathrm{c}}^{+}$ states and measurement of the B${}_{\mathrm{c}}^{+}$(2S) mass in pp collisions at $\sqrt{s}=$ 13 TeV
• Third-family quark-lepton unification with a fundamental composite Higgs
• Observation of an excited $B_c^{+}$ state
• The decays $B_c\to J/\psi +\bar{\ell }{\nu }_{\ell }$ and $B_c\to J/\psi +\pi (K)$ in covariant confined quark model
• B-meson charged current anomalies: the post-Moriond status
• The role of right-handed neutrinos in $b\to c\tau \bar{\nu }$ anomalies
• Higher-derivative operators and effective field theory for general scalar-tensor theories
• Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model
• $b\to c\tau \nu$ Transitions in the Standard Model Effective Field Theory
• Investigation of Effects of New Physics in ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay
• Measurement of the $B_c^{-}$ meson production fraction and asymmetry in 7 and 13 TeV $pp$ collisions
• Scalar-tensor linear inflation
• Exploding operators for Majorana neutrino masses and beyond
• Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model
• Boosting vector leptoquark searches with boosted tops
• CP Violation in ${\bar{B}}^0\to D^{\ast +}{\mu }^{-}{\bar{\nu }}_{\mu }$
• Improved perturbative QCD formalism for $B_c$ meson decays
• Power-counting during single-field slow-roll inflation
• Lepton Flavor Universality tests through angular observables of $\overline{B}\to D^{(\ast )}\ell \overline{\nu }$ decay modes
• Non-minimal $331$ model for Lepton Flavour Universality Violation in $b\to s\ell \ell$ decays
• Signatures of complex new physics in $b\to c\tau \bar{\nu }$ transitions
• Measurement of B${}_{\mathrm{c}}$(2S)${}^{+}$ and B${}_{\mathrm{c}}^{\ast }$(2S)${}^{+}$ cross section ratios in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Looking for $B\to X_s{\ell }^{+}{\ell }^{-}$ in non-minimal Universal Extra Dimensional model
• Probing new physics in semileptonic ${\Sigma }_b$ and ${\Omega }_b$ decays
• Muon $(g-2)$ and Flavor Puzzles in the $U(1{)}_X^{}$-gauged Leptoquark Model
• Prospects for $B_c^{+}\to {\tau }^{+}{\nu }_{\tau }$ at FCC-ee
• Effects of vector leptoquarks on ${\Lambda }_b\to {\Lambda }_c\ell {\overline{\nu }}_{\ell }$ decay
• Extraction of $B_s\to D_s^{(\ast )}$ form factors from $N_f=2$ lattice QCD