The production of K ∗ ( 892 ) 0 and ϕ ( 1020 ) resonances has been measured in p -Pb collisions at √ s N N = 8.16 TeV using the ALICE detector. Resonances are reconstructed via their hadronic decay channels in the rapidity interval − 0.5 < y < 0 and the transverse momentum spectra are measured for various multiplicity classes up to p T = 20 GeV / c for K ∗ ( 892 ) 0 and p T = 16 GeV / c for ϕ ( 1020 ) . The p T -integrated yields and mean transverse momenta are reported and compared with previous results in pp, p -Pb and Pb-Pb collisions. The x T scaling for K ∗ ( 892 ) 0 and ϕ ( 1020 ) resonance production is newly tested in p -Pb collisions and found to hold in the high- p T region at Large Hadron Collider energies. The nuclear modification factors ( R p Pb ) as a function of p T for K * 0 and ϕ at √ s N N = 8.16 TeV are presented along with the new R p Pb measurements of K * 0 , ϕ , Ξ , and Ω at √ s N N = 5.02 TeV. At intermediate p T (2–8 GeV / c ), R p Pb of Ξ , Ω show a Cronin-like enhancement, while K * 0 and ϕ show no or little nuclear modification. At high p T ( > 8 GeV / c ), the R p Pb values of all hadrons are consistent with unity within uncertainties. The R p Pb of K ∗ ( 892 ) 0 and ϕ ( 1020 ) at √ s N N = 8.16 and 5.02 TeV show no significant energy dependence
K*(892)0 and ϕ(1020) production in p−Pb collisions at sNN=8.16 TeV
Di Bari, D.;Colella, D.;Mazzilli, M.;Palasciano, A.;Volpe, G.;
2023-01-01
Abstract
The production of K ∗ ( 892 ) 0 and ϕ ( 1020 ) resonances has been measured in p -Pb collisions at √ s N N = 8.16 TeV using the ALICE detector. Resonances are reconstructed via their hadronic decay channels in the rapidity interval − 0.5 < y < 0 and the transverse momentum spectra are measured for various multiplicity classes up to p T = 20 GeV / c for K ∗ ( 892 ) 0 and p T = 16 GeV / c for ϕ ( 1020 ) . The p T -integrated yields and mean transverse momenta are reported and compared with previous results in pp, p -Pb and Pb-Pb collisions. The x T scaling for K ∗ ( 892 ) 0 and ϕ ( 1020 ) resonance production is newly tested in p -Pb collisions and found to hold in the high- p T region at Large Hadron Collider energies. The nuclear modification factors ( R p Pb ) as a function of p T for K * 0 and ϕ at √ s N N = 8.16 TeV are presented along with the new R p Pb measurements of K * 0 , ϕ , Ξ , and Ω at √ s N N = 5.02 TeV. At intermediate p T (2–8 GeV / c ), R p Pb of Ξ , Ω show a Cronin-like enhancement, while K * 0 and ϕ show no or little nuclear modification. At high p T ( > 8 GeV / c ), the R p Pb values of all hadrons are consistent with unity within uncertainties. The R p Pb of K ∗ ( 892 ) 0 and ϕ ( 1020 ) at √ s N N = 8.16 and 5.02 TeV show no significant energy dependenceI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
