The production cross-section of $J/\psi$ pairs is measured using a data sample of $pp$ collisions collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s} = 13 \,{\mathrm{TeV}}$, corresponding to an integrated luminosity of $279 \pm 11 \,{\mathrm{pb^{-1}}}$. The measurement is performed for $J/\psi$ mesons with a transverse momentum of less than $10 \,{\mathrm{GeV}}/c$ in the rapidity range $2.0<y<4.5$. The production cross-section is measured to be $15.2 \pm 1.0 \pm 0.9 \,{\mathrm{nb}}$. The first uncertainty is statistical, and the second is systematic. The differential cross-sections as functions of several kinematic variables of the $J/\psi$ pair are measured and compared to theoretical predictions
: The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collect...
The production of $J/\psi$ mesons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s...
The production cross-section of J/psi pairs is measured using a data sample of pp collisions collect...
The production cross-section of $J/\psi$ pairs is measured using a data sample of $pp$ collisions co...
The production cross-section of $J/\psi$ pairs is measured using a data sample of pp collisions coll...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/\u3c8 pairs is measured using a data sample of pp collisions colle...
The production cross-section of J/psi pairs is measured using a data sample of pp collisions collect...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
: The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collect...
The production of $J/\psi$ mesons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s...
The production cross-section of J/psi pairs is measured using a data sample of pp collisions collect...
The production cross-section of $J/\psi$ pairs is measured using a data sample of $pp$ collisions co...
The production cross-section of $J/\psi$ pairs is measured using a data sample of pp collisions coll...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
The production cross-section of J/\u3c8 pairs is measured using a data sample of pp collisions colle...
The production cross-section of J/psi pairs is measured using a data sample of pp collisions collect...
The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected...
: The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collect...
The production of $J/\psi$ mesons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s...
The production cross-section of J/psi pairs is measured using a data sample of pp collisions collect...