Yields of prompt and non-prompt J/psi ,as well as Upsilon(1S) mesons, are measured by the CMS experiment via their mu(+)mu(-) decays in PbPb and pp collisions at root s(NN) - 2.76TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p(T), as well as collision centrality. For prompt J/psi with relatively high p(T) (6.5 < p(T) < 30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/psi, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p(T) Upsilon(1S) mesons are suppressed in PbPb collisions.

Suppression of non-prompt J/psi, prompt J/psi, and Upsilon(1S) in PbPb collisions at root s(NN)=2.76 TeV / S., C., V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., M., H., N., H., J., H., M., J., W., K., M., K., D. L., I., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - (2012), p. 063. [10.1007/jhep05(2012)063]

Suppression of non-prompt J/psi, prompt J/psi, and Upsilon(1S) in PbPb collisions at root s(NN)=2.76 TeV

BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;SANTANASTASIO, FRANCESCO;TRACZYK, PIOTR WOJCIECH;
2012

Abstract

Yields of prompt and non-prompt J/psi ,as well as Upsilon(1S) mesons, are measured by the CMS experiment via their mu(+)mu(-) decays in PbPb and pp collisions at root s(NN) - 2.76TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p(T), as well as collision centrality. For prompt J/psi with relatively high p(T) (6.5 < p(T) < 30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/psi, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p(T) Upsilon(1S) mesons are suppressed in PbPb collisions.
2012
heavy ions
01 Pubblicazione su rivista::01a Articolo in rivista
Suppression of non-prompt J/psi, prompt J/psi, and Upsilon(1S) in PbPb collisions at root s(NN)=2.76 TeV / S., C., V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., M., H., N., H., J., H., M., J., W., K., M., K., D. L., I., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - (2012), p. 063. [10.1007/jhep05(2012)063]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/483462
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