# Search for $B_c^+$ decays to the $p\overline p\pi^+$ final state

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## Abstract

A search for the decays of the $B_c^+$ meson to $p\bar p\pi^+$ is performed for the first time using a data sample corresponding to an integrated luminosity of 3.0 $\mathrm{fb}^{-1}$ collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of $7$ and $8$ TeV. No signal is found and an upper limit, at 95% confidence level, is set, $\frac{f_c}{f_u}\times\mathcal{B}(B_c^+\to p\bar p\pi^+)<3.6\times10^{-8}$ in the kinematic region $m(p\bar p)<2.85\mathrm{ Ge V /}c^2$, $p_{\rm T}(B)<20\mathrm{ Ge V /}c$ and $2.0<y(B)<4.5$, where $\mathcal{B}$ is the branching fraction and $f_c$ ($f_u$) is the fragmentation fraction of the $b$ quark into a $B_c^+$ ($B^+$) meson.

 Distributions of BDT output for the $B _ c ^+ \rightarrow p \overline{p} \pi^{+}$ signal and the background. The vertical dashed lines indicate the lower limits of the three regions in which the signal is determined. Fig1.pdf [20 KiB] HiDef png [178 KiB] Thumbnail [172 KiB] *.C file Fits to the $p \overline p \pi ^+$ invariant mass in the $B ^+$ region, for (left) $m( p \overline p )<2.85 {\mathrm{ Ge V /}c^2}$ and (right) $2.850.18$, for (left) $m( p \overline p )<2.85 {\mathrm{ Ge V /}c^2}$ and (right) $2.85 ## Tables and captions  Relative systematic uncertainties (in %) on the ratio$\epsilon_u/\epsilon_c\$ and input branching fractions. Table_1.pdf [49 KiB] HiDef png [58 KiB] Thumbnail [26 KiB] tex code

Created on 17 August 2019.Citation count from INSPIRE on 23 August 2019.