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Measurement of $B_c^+$ production in proton-proton collisions at $\sqrt{s}=8$ TeV

The LHCb collaboration
Phys.Rev.Lett. 114 (2015) 132001, 2015

Abstract (data abstract)
CERN-LHC. Production of $B_c^{+}$ mesons in proton-proton collisions at a centre-of-mass energy of 8 TeV is studied with data corresponding to an integrated luminosity of 2.0 fb$^{-1}$ recorded by the LHCb experiment. The ratio of production cross sections times branching fractions between the $B_c^{+} \rightarrow J/\psi \pi^{+}$ and $B^{+} \rightarrow J/\psi K^{+}$ decays, \[ R(p_T; y) \equiv \frac{d\sigma_{B_{c}^{+}}(p_T; y) \cdot Br(B_{c}^{+} \to J/\psi \pi^+)}{d\sigma_{B^{+}}(p_T; y) \cdot Br(B^{+} \to J/\psi K^+)} \] is measured as a function of transverse momentum and rapidity in the regions of $0 < p_T < 20$ $GeV/c$ and $2.0 < y < 4.5$. The ratio in this kinematic range is measured to be ($0.683 \pm 0.018 \pm 0.009)$ %, where the first uncertainty is statistical and the second systematic.

  • Table 1

    Data from Supplemental material; FIG. 3

    10.17182/hepdata.22229.v1/t1

    Double differential production ratio $R(p_T, y)$ in bins of $p_T$ and $y$.

  • Table 2

    Data from Supplemental material; FIG. 4 (a)

    10.17182/hepdata.22229.v1/t2

    Differential production ratio $R(p_T)$ in bins of $p_T$ and integrated over $2.0 < y <4.5$ range.

  • Table 3

    Data from Supplemental material; FIG. 4 (b)

    10.17182/hepdata.22229.v1/t3

    Differential production ratio $R(y)$ in bins of $y$ and integrated over $0 < p_T < 20$ $GeV/c$ range.

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