Abstract

The production of $B^+$, $B^0$ and $\Lambda_b^0$ hadrons is studied in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}}=8.16\,{\rm TeV}$ recorded with the LHCb detector at the LHC. The measurement uses a dataset corresponding to an integrated luminosity of $12.2\pm0.3\,\mathrm{nb}^{-1}$ for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and $18.6\pm0.5\,\mathrm{nb}^{-1}$ for the lead beam projected into the LHCb detector (corresponding to measuring hadron production at negative rapidity). Nuclear effects are probed through double-differential cross-sections, forward-to-backward cross-section ratios and nuclear modification factors of the beauty hadrons. The double-differential cross-sections are measured as a function of the beauty-hadron transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame. Forward-to-backward cross-section ratios and nuclear modification factors indicate a significant nuclear suppression at positive rapidity. The ratio of $\Lambda_b^0$ over $B^0$ production cross-sections is reported and is consistent with the corresponding measurement in $pp$~collisions.

Table 4a

Table IV and Figure 5 of the paper

10.17182/hepdata.153895.v1/t1

Differential cross-section of $B^+$ production in bins of $p_\mathrm{T}$ and $y$, $\frac{\mathrm{d}^2\sigma}{\mathrm{d}p_\mathrm{T}\,\mathrm{d}y}$ ($\mu\mathrm{b}/[\mathrm{GeV}/c]$).
Table 4b

Table IV and Figure 6 of the paper

10.17182/hepdata.153895.v1/t2

Differential cross-section of $B^0$ production in bins of $p_\mathrm{T}$ and $y$, $\frac{\mathrm{d}^2\sigma}{\mathrm{d}p_\mathrm{T}\,\mathrm{d}y}$ ($\mu\mathrm{b}/[\mathrm{GeV}/c]$).
Table 4c

Table IV and Figure 7 of the paper

10.17182/hepdata.153895.v1/t3

Differential cross-section of $\mathit{\Lambda}_b^0$ production in bins of $p_\mathrm{T}$ and $y$, $\frac{\mathrm{d}^2\sigma}{\mathrm{d}p_\mathrm{T}\,\mathrm{d}y}$ ($\mu\mathrm{b}/[\mathrm{GeV}/c]$).
Table 4d

Table IV and Figures 5, 6 and 7 of the paper

10.17182/hepdata.153895.v1/t4

Differential cross-sections of $B^+$, $B^0$ and $\mathit{\Lambda}_b^0$ production in bins of $y$ integrated over $2 < p_\mathrm{T} < 20\,\mathrm{GeV}/c$, $\frac{\mathrm{d}\sigma}{\mathrm{d}y}$...
Table 5a

Table V and Figures 9, 10 and 11 of the paper

10.17182/hepdata.153895.v1/t5

Forward-backward ratios, $R_\mathrm{FB}$, of $B^+$, $B^0$ and $\mathit{\Lambda}_b^0$ production in bins of $p_\mathrm{T}$ and integrated over $2.5 < |y| <...
Table 5b

Table V and Figures 9, 10 and 11 of the paper

10.17182/hepdata.153895.v1/t6

Forward-backward ratios, $R_\mathrm{FB}$, of $B^+$, $B^0$ and $\mathit{\Lambda}_b^0$ production integrated over $2 < p_\mathrm{T} < 20\,\mathrm{GeV}/c$ and $2.5 < |y|...
Table 6a

Table VI and Figure 13 of the paper

10.17182/hepdata.153895.v1/t7

Ratios of nuclear modification factors, $R_{p\mathrm{Pb}}^{\mathit{\Lambda}_b^0/B^0}$, in bins of $p_\mathrm{T}$ and integrated over $2.5 < |y| < 3.5$, for $p\mathrm{Pb}$...
Table 6b

Table VI and Figure 13 of the paper

10.17182/hepdata.153895.v1/t8

Ratios of nuclear modification factors, $R_{p\mathrm{Pb}}^{\mathit{\Lambda}_b^0/B^0}$, integrated over $2 < p_\mathrm{T} < 20\,\mathrm{GeV}/c$ and $2.5 < |y| < 3.5$, for...
Table 7a

Table VII and Figure 14 of the paper

10.17182/hepdata.153895.v1/t9

Nuclear modification factor, $R_{p\mathrm{Pb}}$, of $B^+$ production in $p\mathrm{Pb}$ and $\mathrm{Pb}p$ collisions, in bins of $p_\mathrm{T}$ for the range $2.5...
Table 7b

Table VII and Figure 14 of the paper

10.17182/hepdata.153895.v1/t10

Nuclear modification factor, $R_{p\mathrm{Pb}}$, of $B^+$ production in $p\mathrm{Pb}$ and $\mathrm{Pb}p$ collisions, integrated over $2 < p_\mathrm{T} < 20\,\mathrm{GeV}/c$ for...

Table 4a

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