Publication: Production of the rho(770)(0) meson in pp and Pb-Pb collisions at root S-NN=2.76 TeV
Дата
2019
Авторы
Acharya, S.
Acosta, F. T.
Adamova, D.
Adolfsson, J.
Belyaev, V.
Bogdanov, A.
Grigoriev, V.
Kaplin, V.
Kondratyeva, N.
Loginov, V.
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Аннотация
The production of the rho(770)(0) meson has been measured at midrapidity (vertical bar y vertical bar < 0.5) in pp and centrality differential Pb-Pb collisions at root S-NN = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The particles have been reconstructed in the rho(770)(0) -> pi(+)pi(-) decay channel in the transverse-momentum (p(T)) range 0.5-11 GeV/c. A centrality-dependent suppression of the ratio of the integrated yields 2 rho(770)(0)/(pi(+)+pi(-)) is observed. The ratio decreases by similar to 40% from pp to central Pb-Pb collisions. A study of the p(T)-differential 2 rho(770)(0)/(pi(+) + pi(-)) ratio reveals that the suppression occurs at low transverse momenta, P-T < 2 GeV/c. At higher momentum, particle ratios measured in heavy-ion and pp collisions are consistent. The observed suppression is very similar to that previously measured for the K*(892)(0)/K ratio and is consistent with EPOS3 predictions that may imply that rescattering in the hadronic phase is a dominant mechanism for the observed suppression.
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Production of the rho(770)(0) meson in pp and Pb-Pb collisions at root S-NN=2.76 TeV / Acharya, S [et al.] // Physical Review C. - 2019. - 99. - № 6. - 10.1103/PhysRevC.99.064901
URI
https://www.doi.org/10.1103/PhysRevC.99.064901
https://www.scopus.com/record/display.uri?eid=2-s2.0-85067416487&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/18231
https://www.scopus.com/record/display.uri?eid=2-s2.0-85067416487&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000470857000003
https://openrepository.mephi.ru/handle/123456789/18231