Chinese Physics C > 2020, Vol. 44 > Issue(12): 124106 DOI: 10.1088/1674-1137/abb4d7

Fast heating dissociation of ${ \Upsilon(1S) }$ in heavy ion collisions at RHIC

Yunpeng Liu,
Baoyi Chen^,

Department of Applied Physics, School of Science, Tianjin University, Tianjin 300072, China

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Abstract：
By adopting the adiabatic assumption in the cooling process, we discuss a novel mechanism of $ \Upsilon(1S) $ suppression that occurs due to the fast heating process at the early stage of the fireball, instead of its finite decay width in a finite temperature medium generated by heavy ion collisions. We calculate the transition probability after the fast heating dissociation as a function of the temperature of the medium and the nuclear modification factor in central collisions and find that the suppression is not negligible at RHIC, even if the width of $ \Upsilon(1S) $ becomes zero.
- relativistic heavy-ion collision,
- quark-gluon plasma,
- heavy quarkonium,
- adiabatic theorem

References

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Yunpeng Liu and Baoyi Chen. Fast Heating Dissociation of ${ \Upsilon(1S) }$ in Heavy Ion Collisions at RHIC[J]. Chinese Physics C. doi: 10.1088/1674-1137/abb4d7

Yunpeng Liu and Baoyi Chen. Fast Heating Dissociation of ${ \Upsilon(1S) }$ in Heavy Ion Collisions at RHIC[J]. Chinese Physics C. doi:10.1088/1674-1137/abb4d7 shu

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Received: 2020-07-13

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沈阳化工大学材料科学与工程学院沈阳 110142

Fast heating dissociation of ${ \Upsilon(1S) }$ in heavy ion collisions at RHIC

Yunpeng Liu
Baoyi Chen^,

Corresponding author:Baoyi Chen,baoyi.chen@tju.edu.cn, Corresponding author

Department of Applied Physics, School of Science, Tianjin University, Tianjin 300072, China

Received Date:2020-07-13
Available Online:2020-12-01

Abstract:By adopting the adiabatic assumption in the cooling process, we discuss a novel mechanism of $ \Upsilon(1S) $ suppression that occurs due to the fast heating process at the early stage of the fireball, instead of its finite decay width in a finite temperature medium generated by heavy ion collisions. We calculate the transition probability after the fast heating dissociation as a function of the temperature of the medium and the nuclear modification factor in central collisions and find that the suppression is not negligible at RHIC, even if the width of $ \Upsilon(1S) $ becomes zero.