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Quarkonium suppression in heavy-ion collisions: An open quantum system approach

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Brambilla, N., Escobedo Espinosa, M., Soto, J., & Vairo, A. (2017). Quarkonium suppression in heavy-ion collisions: An open quantum system approach. Physical Review D, 96(3), Article 034021. https://doi.org/10.1103/PhysRevD.96.034021
Published in
Physical Review D
Authors
Brambilla, Nora |
Escobedo Espinosa, Miguel |
Soto, Joan |
Vairo, Antonio
Date
2017
Copyright
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.

 
We address the evolution of heavy-quarkonium states in an expanding quark-gluon plasma by implementing effective field theory techniques in the framework of open quantum systems. In this setting we compute the nuclear modification factors for quarkonia that are S-wave Coulombic bound states in a strongly coupled quark-gluon plasma. The calculation is performed at an accuracy that is leading order in the heavy-quark density expansion and next-to-leading order in the multipole expansion. The quarkonium density-matrix evolution equations can be written in the Lindblad form, and, hence, they account for both dissociation and recombination. Thermal mass shifts, thermal widths and the Lindblad equation itself depend on only two nonperturbative parameters: the heavy-quark momentum diffusion coefficient and its dispersive counterpart. Finally, by numerically solving the Lindblad equation, we provide results for the ϒð1SÞ and ϒð2SÞ suppression.
Publisher
American Physical Society
ISSN Search the Publication Forum
2470-0010
Keywords
quarkonium open quantum systems hiukkasfysiikka
DOI
https://doi.org/10.1103/PhysRevD.96.034021
URI

http://urn.fi/URN:NBN:fi:jyu-201709203782

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/27236491

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