Bottomonium production in heavy-ion collisions at STAR
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00461517" target="_blank" >RIV/61389005:_____/16:00461517 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.061" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.061</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.061" target="_blank" >10.1016/j.nuclphysbps.2016.05.061</a>
Alternative languages
Result language
angličtina
Original language name
Bottomonium production in heavy-ion collisions at STAR
Original language description
Bottomonium measurements provide unique insight into hot and cold nuclear matter effects present in the medium that is formed in high-energy heavy-ion collisions. Recent STAR results show that in root S-NN = 200 GeV central Au+Au collisions the Upsilon(1S) state is suppressed more than the case that if only cold nuclear matter effects were present, and the excited state yields are consistent with a complete suppression. In 2012, STAR also collected 263.4 mu b(-1) high-energy-electron triggered data in U+U collisions at root S-NN = 193 GeV. Central U+U collisions, with an estimated 20% higher energy density than that in central Au+Au data, extend the Upsilon(1S+2S+3S) and Upsilon(1S) nuclear modification trends observed in Au+Au towards higher number of participant nucleons, and confirm the suppression of the Upsilon(1S) state. We see a hint with 1.8 sigma significance that the Upsilon(2S+3S) excited states are not completely suppressed in U+U collisions. These data support the sequential in-medium quarkonium dissociation picture and favor models with a strong q (q) over bar binding.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Nuclear and Particle Physics Proceedings
ISBN
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ISSN
2405-6014
e-ISSN
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Number of pages
4
Pages from-to
269-272
Publisher name
Elsevier Science BV
Place of publication
Amsterdam
Event location
Montreal
Event date
Jun 29, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000379282900061