Distributions of (left) invariant mass and (right) pseudoproper time of the $ { J \mskip -3mu/\mskip -2mu\psi }$ candidate for an example interval corresponding to $2< p_{\mathrm{T}} <3\text{ Ge V /}c $ and $3.0<y<3.5$. Projections of the two-dimensional fit are also shown.

Differential cross-sections for (left) prompt and (right) nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ in intervals of $y$. The error bars represent the total uncertainties, which are partially correlated between intervals.

Differential cross-sections (left) $\mathrm{d}\sigma/\mathrm{d} p_{\mathrm{T}} $ and (right) $\mathrm{d}\sigma/\mathrm{d} y$ for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with NRQCD and CGC calculations [54,55]. Uncertainties due to LDMEs determination, renormalisation scales, and factorisation scales are included in the NRQCD and CGC predictions.

Differential cross-sections (left) $\mathrm{d}\sigma/\mathrm{d} p_{\mathrm{T}} $ and (right) $\mathrm{d}\sigma/\mathrm{d} y$ for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with FONLL calculations [58,59]. The orange band shows the total FONLL calculation uncertainty; the violet band shows the uncertainties of PDFs and that due to $ b $ -quark mass added in quadrature; the blue band shows only the uncertainties on PDFs.

Fraction of nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ in intervals of $y$. The error bars represent the total uncertainties, which are partially correlated between intervals.

Ratios of differential cross-sections between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements as a function of (left) $ p_{\mathrm{T}}$ and (right) $y$ for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with NRQCD and CGC calculations [54,55]. Uncertainties due to the LDMEs determination, renormalisation scales, and factorisation scales are included in the NRQCD and CGC calculations.

Ratios of differential cross-sections between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements as a function of (left) $ p_{\mathrm{T}}$ and (right) $y$ for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with NRQCD and CGC calculations [54,55]. Uncertainties due to the LDMEs determination, renormalisation scales, and factorisation scales are included in the NRQCD and CGC calculations.

Ratios of differential cross-sections between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements as a function of (left) $ p_{\mathrm{T}}$ and (right) $y$ for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with FONLL calculations [58,59]. The orange band shows the total FONLL calculation uncertainty; the violet band shows the uncertainties on PDFs and that due to $ b $ -quark mass added in quadrature; the red band shows only the uncertainty due to the $ b $ -quark mass.

Ratios of differential cross-sections between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements as a function of (left) $ p_{\mathrm{T}}$ and (right) $y$ for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons compared with FONLL calculations [58,59]. The orange band shows the total FONLL calculation uncertainty; the violet band shows the uncertainties on PDFs and that due to $ b $ -quark mass added in quadrature; the red band shows only the uncertainty due to $ b $ -quark mass.

Nuclear modification factor $R_{p\text{Pb}}$ as a function of $y$ for (left) prompt and (right) nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons, together with the theoretical predictions from (yellow dashed line and brown band) Ref. [61], (blue band) Ref. [62], and (violet solid line with band) Ref. [63,64]. In the data points the full error bars represent the statistical and systematic uncertainties added in quadrature, while the smaller ones represent the statistical uncertainties.

Animated gif made out of all figures.

Relative systematic uncertainties on the measurement of the $ { J \mskip -3mu/\mskip -2mu\psi }$ production cross-section. The symbol $\oplus$ means addition in quadrature. The detailed uncertainties for each ( $ p_{\mathrm{T}}$ ,$y$) interval are in Appendix A.

Double-differential production cross-sections $\frac{\mathrm{d}^2\sigma}{\mathrm{d} p_{\mathrm{T}} \mathrm{d} y}$[nb/( $\text{Ge V /}c$ ) per unit rapidity] for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons in ( $ p_{\mathrm{T}}$ ,$y$) intervals. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, the third are uncorrelated systematic uncertainties, and the last are correlated between $ p_{\mathrm{T}}$ intervals and uncorrelated between $y$ intervals.

Double-differential production cross-sections $\frac{\mathrm{d}^2\sigma}{\mathrm{d} p_{\mathrm{T}} \mathrm{d} y}$[nb/( $\text{Ge V /}c$ ) per unit rapidity] for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons in ( $ p_{\mathrm{T}}$ ,$y$) intervals. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, the third are uncorrelated systematic uncertainties, and the last are correlated between $ p_{\mathrm{T}}$ intervals and uncorrelated between $y$ intervals

Single-differential production cross-sections $\frac{\mathrm{d}\sigma}{\mathrm{d} p_{\mathrm{T}} }$[nb/( $\text{Ge V /}c$ )] for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons in the rapidity range $2-4.5$. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, and the last are uncorrelated systematic uncertainties.

Single-differential production cross-sections $\frac{\mathrm{d}\sigma}{\mathrm{d} p_{\mathrm{T}} }$[nb/( $\text{Ge V /}c$ )] for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons in the rapidity range $2-4.5$. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, and the last are uncorrelated systematic uncertainties.

Single-differential production cross-sections $\frac{\mathrm{d}\sigma}{\mathrm{d} y}$[nb per unit rapidity] for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, and the last are uncorrelated systematic uncertainties.

Single-differential production cross-sections $\frac{\mathrm{d}\sigma}{\mathrm{d} y}$[nb per unit rapidity] for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons. The first uncertainties are statistical, the second are correlated systematic uncertainties shared between intervals, and the last are uncorrelated systematic uncertainties.

Fraction of nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons (in %) in ( $ p_{\mathrm{T}}$ ,$y$) intervals. The first uncertainty is statistical and the second is systematic.

Nuclear modification factor $R_{p\text{Pb}}$ as a function of $y$ with $ p_{\mathrm{T}} <14\text{ Ge V /}c $. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ with $2.0<y<4.5$. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $y$ with $ p_{\mathrm{T}} <8\text{ Ge V /}c $. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ with $2.0<y<4.5$. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for prompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $y$ with $ p_{\mathrm{T}} <8\text{ Ge V /}c $. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ with $2.0<y<4.5$. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 8 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $y$ with $ p_{\mathrm{T}} <14\text{ Ge V /}c $. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $ p_{\mathrm{T}}$ with $2.0<y<4.5$. The first uncertainty is statistical and the second is systematic.

Cross-section ratios between 13 $\text{ Te V}$ and 5 $\text{ Te V}$ measurements for nonprompt $ { J \mskip -3mu/\mskip -2mu\psi }$ mesons as a function of $y$ with $ p_{\mathrm{T}} <14\text{ Ge V /}c $. The first uncertainty is statistical and the second is systematic.

Relative changes of cross-sections (in %), for a polarisation of $\lambda_{\theta}=-0.2$ rather than zero, in ( $ p_{\mathrm{T}}$ ,$y$) intervals.

Relative change of cross-sections (in %), for a polarisation of $\lambda_{\theta}=-1$ rather than zero, in ( $ p_{\mathrm{T}}$ ,$y$) intervals.

Relative changes of cross-sections (in %), for a polarisation of $\lambda_{\theta}=+1$ rather than zero, in ( $ p_{\mathrm{T}}$ ,$y$) intervals.

Supplementary material full pdf

This ZIP file contains supplementary material for the publication LHCb-PAPER-2021-020. The files are: An overview of the extra figures: supplementary.pdf Figures in various formats: Fig1-S.pdf, Fig1-S.png, Fig1-S.eps, Fig1-S.C Fig2a-S.pdf, Fig2a-S.png, Fig2a-S.eps, Fig2a-S.C Fig2b-S.pdf, Fig2b-S.png, Fig2b-S.eps, Fig2b-S.C The LaTeX source: supplementary-app.tex