This paper presents isolated photon-hadron correlations using pp and p-Pb data collected by the ALICE detector at the LHC. For photons with |η|<0.67 and 12<40 GeV/c, the associated yield of charged particles in the range |η|<0.80 and 0.5<10 GeV/c is presented. These momenta are much lower than previous measurements at the LHC. No significant difference between pp and p-Pb is observed, with Pythia 8.2 describing both data sets within uncertainties. This measurement constrains nuclear effects on the parton fragmentation in p-Pb collisions, and provides a benchmark for future studies of Pb-Pb collisions.
Measurement of isolated photon-hadron correlations in sNN = 5.02 TeV pp and p-Pb collisions / Acharya, S., Adamova, D., Adolfson, J., Aggarwal, M., Rinella, G., Agnello, M., Agrawal, N., Bufalino, S., Concas, M., Grosa, F., Catalano, F., Fecchio, P., Balbino, A.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 102:4(2020). [10.1103/PhysRevC.102.044908]
Measurement of isolated photon-hadron correlations in sNN = 5.02 TeV pp and p-Pb collisions
Fecchio, P.;
2020-01-01
Abstract
This paper presents isolated photon-hadron correlations using pp and p-Pb data collected by the ALICE detector at the LHC. For photons with |η|<0.67 and 12<40 GeV/c, the associated yield of charged particles in the range |η|<0.80 and 0.5<10 GeV/c is presented. These momenta are much lower than previous measurements at the LHC. No significant difference between pp and p-Pb is observed, with Pythia 8.2 describing both data sets within uncertainties. This measurement constrains nuclear effects on the parton fragmentation in p-Pb collisions, and provides a benchmark for future studies of Pb-Pb collisions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
