Coherent production of J/psi mesons is studied in lead-lead collision data at a nucleon-nucleon centre-of-mass energy of 5 TeV collected by the LHCb experiment. The data set corresponds to an integrated luminosity of about 10 mu b(-1). The J/psi, mesons are reconstructed in the dimuon final state, where the muons are detected within the pseudorapidity region 2.0 < eta < 4.5. The J/psi mesons are required to have transverse momentum P-T < 1 GeV and rapidity 2.0 < y < 4.5. The cross-section within this fiducial region is measured to be sigma = 5.3 +/- 0.2 (stat) +/- 0.5 (syst) +/- 0.7 (lumi) mb. The differential cross-section is also measured in five bins of J/psi rapidity. The results are compared to predictions from phenomenological models.
Study of coherent J/psi production in lead-lead collisions at root s(NN)=5 TeV with the LHCb experiment
Calabrese, R.;Fiorini, M.;Luppi, E.;Minzoni, L.;Pappalardo, L. L.;Tomassetti, L.;Capriotti, L.;
2019
Abstract
Coherent production of J/psi mesons is studied in lead-lead collision data at a nucleon-nucleon centre-of-mass energy of 5 TeV collected by the LHCb experiment. The data set corresponds to an integrated luminosity of about 10 mu b(-1). The J/psi, mesons are reconstructed in the dimuon final state, where the muons are detected within the pseudorapidity region 2.0 < eta < 4.5. The J/psi mesons are required to have transverse momentum P-T < 1 GeV and rapidity 2.0 < y < 4.5. The cross-section within this fiducial region is measured to be sigma = 5.3 +/- 0.2 (stat) +/- 0.5 (syst) +/- 0.7 (lumi) mb. The differential cross-section is also measured in five bins of J/psi rapidity. The results are compared to predictions from phenomenological models.File | Dimensione | Formato | |
---|---|---|---|
1-s2.0-S0375947418303506-main.pdf
accesso aperto
Tipologia:
Full text (versione editoriale)
Licenza:
Creative commons
Dimensione
332.71 kB
Formato
Adobe PDF
|
332.71 kB | Adobe PDF | Visualizza/Apri |
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.