%0 Journal Article
%T Measurement of the prompt-production cross-section ratio sigma(chi(c2))/sigma(chi(c1)) in pPb collisions at root s(NN)=8.16 TeV
%A LHCb Collaboration (Aaij, R. et al
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%J Physical Review C
%D 2021
%V 103
%N 6
%@ 2469-9985
%F LHCbCollaborationAaij_etal2021
%O WOS:000661749700003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4872), last updated on Sat, 10 Jul 2021 12:48:27 +0000
%X This article reports the first measurement of prompt chi(c1) and chi(c2) charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio sigma(chi(c2))/sigma(chi(c1)) is measured in pPb collisions at root s(NN) = 8.16 TeV, collected with the LHCb experiment. The chi(c1,2) states are reconstructed via their decay to a J/psi meson, subsequently decaying into a pair of oppositely charged muons, and a photon, which is reconstructed in the calorimeter or via its conversion in the detector material. The cross-section ratio is consistent with unity in the two considered rapidity regions. Comparison with a corresponding cross-section ratio previously measured by the LHCb Collaboration in pp collisions suggests that chi(c1) and chi(c2) states are similarly affected by nuclear effects occurring in pPb collisions.
%R 10.1103/PhysRevC.103.064905
%U https://arxiv.org/abs/2103.07349
%U https://doi.org/10.1103/PhysRevC.103.064905
%P 064905-10pp