Charm contribution to bulk viscosity

Laine, Mikko Sakari; Sohrabianaraki, Kiyoumars (2015). Charm contribution to bulk viscosity. European physical journal. C - particles and fields, 75(2), p. 80. EDP Sciences 10.1140/epjc/s10052-015-3297-9

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In the range of temperatures reached in future heavy ion collision experiments, hadronic pair annihilations and creations of charm quarks may take place within the lifetime of the plasma. As a result, charm quarks may increase the bulk viscosity affecting the early stages of hydrodynamic expansion. Assuming thermalisation, we estimate the charm contribution to bulk viscosity within the same effective kinetic theory framework in which the light parton contribution has been computed previously. The time scale at which this physics becomes relevant is related to the width of the transport peak associated with the trace anomaly correlator and is found to be ≲20 fm/c for T≳600 MeV.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Laine, Mikko Sakari and Sohrabianaraki, Kiyoumars

Subjects:

500 Science > 530 Physics

ISSN:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

11 Mar 2015 14:29

Last Modified:

11 Mar 2015 14:29

Publisher DOI:

10.1140/epjc/s10052-015-3297-9

BORIS DOI:

10.7892/boris.64205

URI:

https://boris.unibe.ch/id/eprint/64205

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