Microscopic study of deuteron production in PbPb collisions at via hydrodynamics and a hadronic afterburner
Abstract
The deuteron yield in Pb+Pb collisions at $$\sqrt{s_{NN}} = 2.76$$ TeV is consistent with thermal production at a freeze-out temperature of $T = 155$ MeV. The existence of deuterons with binding energy of 2.2 MeV at this temperature was described as "snowballs in hell". We provide a microscopic explanation of this phenomenon, utilizing relativistic hydrodynamics and switching to a hadronic afterburner at the above mentioned temperature of $T = 155$ MeV. The measured deuteron $$p_T$$-spectra and coalescence parameter $$B_2(p_T)$$ are reproduced without free parameters, only by implementing experimentally known cross-sections of deuteron reactions with hadrons, most importantly $$\pi d \leftrightarrow \pi n p$$.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Helmholtz Association (Germany)
- OSTI Identifier:
- 1506548
- Alternate Identifier(s):
- OSTI ID: 1477388
- Grant/Contract Number:
- AC02-05CH11231; ACI-1550228; VH-NG-822
- Resource Type:
- Published Article
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Name: Physical Review C Journal Volume: 99 Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; heavy ion collisions; deuteron; transport approach; relativistic hydrodynamics
Citation Formats
Oliinychenko, Dmytro, Pang, Long-Gang, Elfner, Hannah, and Koch, Volker. Microscopic study of deuteron production in PbPb collisions at s = 2.76 TeV via hydrodynamics and a hadronic afterburner. United States: N. p., 2019.
Web. doi:10.1103/PhysRevC.99.044907.
Oliinychenko, Dmytro, Pang, Long-Gang, Elfner, Hannah, & Koch, Volker. Microscopic study of deuteron production in PbPb collisions at s = 2.76 TeV via hydrodynamics and a hadronic afterburner. United States. https://doi.org/10.1103/PhysRevC.99.044907
Oliinychenko, Dmytro, Pang, Long-Gang, Elfner, Hannah, and Koch, Volker. Thu .
"Microscopic study of deuteron production in PbPb collisions at s = 2.76 TeV via hydrodynamics and a hadronic afterburner". United States. https://doi.org/10.1103/PhysRevC.99.044907.
@article{osti_1506548,
title = {Microscopic study of deuteron production in PbPb collisions at s = 2.76 TeV via hydrodynamics and a hadronic afterburner},
author = {Oliinychenko, Dmytro and Pang, Long-Gang and Elfner, Hannah and Koch, Volker},
abstractNote = {The deuteron yield in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV is consistent with thermal production at a freeze-out temperature of $T = 155$ MeV. The existence of deuterons with binding energy of 2.2 MeV at this temperature was described as "snowballs in hell". We provide a microscopic explanation of this phenomenon, utilizing relativistic hydrodynamics and switching to a hadronic afterburner at the above mentioned temperature of $T = 155$ MeV. The measured deuteron $p_T$-spectra and coalescence parameter $B_2(p_T)$ are reproduced without free parameters, only by implementing experimentally known cross-sections of deuteron reactions with hadrons, most importantly $\pi d \leftrightarrow \pi n p$.},
doi = {10.1103/PhysRevC.99.044907},
journal = {Physical Review C},
number = 4,
volume = 99,
place = {United States},
year = {Thu Apr 11 00:00:00 EDT 2019},
month = {Thu Apr 11 00:00:00 EDT 2019}
}
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https://doi.org/10.1103/PhysRevC.99.044907
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Works referencing / citing this record:
Microscopic study of deuteron production in PbPb collisions at $\sqrt{s} = 2.76 TeV$ via hydrodynamics and a hadronic afterburner
text, January 2019
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