Large baryon densities achievable in high-energy heavy-ion collisions outside the central rapidity region

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Abstract

Nuclei are nearly transparent to each other when they collide at high energy, but the collisions do produce high-energy density matter in the central rapidity region where most experimental measurements are made. What happens to the receding nuclear fireballs? We calculate the energy loss of the nuclei using the color glass condensate model. We then use a simple space-time picture of the collision to calculate the baryon and energy densities of the receding fireballs. For central collisions of large nuclei at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider we find baryon densities more than ten times that of normal nuclear matter. These results provide initial conditions for subsequent hydrodynamic evolution and could test the equation of state at very high baryon densities.

Original languageEnglish (US)
Article number014906
JournalPhysical Review C
Volume99
Issue number1
DOIs
StatePublished - 2019

Bibliographical note

Funding Information:
We are grateful to C. Shen for enlightening discussions. This work was supported by the U.S. Department of Energy Grant No. DE-FG02-87ER40328. M.L. was also supported by a Doctoral Dissertation Fellowship from the University of Minnesota.

Funding Information:
We are grateful to C. Shen for enlightening discussions. This work was supported by the U.S. Department of Energy Grant No. DE-FG02-87ER40328. M.L. was also supported by a Doctoral Dissertation Fellowship from the University of Minnesota.

Publisher Copyright:
© 2019 American Physical Society.

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