Publications by Neville Harnew

Measurement of the J/ψ pair production cross-section in pp collisions at √s = 13 TeV

Journal of High Energy Physics Springer 2017 (2017) 47-

R Aaij, B Adeva, M Adinolfi, T Evans, P Gandini, BR Gruberg Cazon, T Hadavizadeh, N Harnew, DR Hill, PG Jalocha, MJJ John, NP Jurik, S Malde, AK Nandi, A Rollings, S Topp-Joergensen, G Veneziano, GR Wilkinson

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

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