Evidence for X(3872) in Pb-Pb Collisions and Studies of its Prompt Production at sNN =5.02 TeV
Journal
Physical Review Letters
Journal Volume
128
Journal Issue
3
Date Issued
2022
Author(s)
Abstract
The first evidence for X(3872) production in relativistic heavy ion collisions is reported. The X(3872) production is studied in lead-lead (Pb-Pb) collisions at a center-of-mass energy of sNN=5.02 TeV per nucleon pair, using the decay chain X(3872)→J/ψπ+π-→μ+μ-π+π-. The data were recorded with the CMS detector in 2018 and correspond to an integrated luminosity of 1.7 nb-1. The measurement is performed in the rapidity and transverse momentum ranges |y|<1.6 and 15
Subjects
Colliding beam accelerators; Heavy ions; Lead alloys; Tellurium compounds; A-center; Center-of-mass energies; Centre-of-mass energies; CMS detectors; Decay chains; Integrated luminosity; Momentum range; Pb-Pb collisions; Relativistic heavy ion collision; Transverse momenta; Binary alloys
Type
journal article