Low-momentum direct photon measurement in Cu+Cu collisions at √sNN=200 GeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00501762" target="_blank" >RIV/68378271:_____/18:00501762 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevC.98.054902" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.98.054902</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.98.054902" target="_blank" >10.1103/PhysRevC.98.054902</a>
Alternative languages
Result language
angličtina
Original language name
Low-momentum direct photon measurement in Cu+Cu collisions at √sNN=200 GeV
Original language description
We measured direct photons for pT<5GeV/c in minimum bias and 0%–40% most-central events at midrapidity for Cu+Cu collisions at sNN=200GeV. The e+e− contribution from quasireal direct virtual photons has been determined as an excess over the known hadronic contributions in the e+e− mass distribution. A clear enhancement of photons over the binary scaled p+p fit is observed for pT<4GeV/c in Cu+Cu data. The pT spectra are consistent with the Au+Au data covering a similar number of participants. The inverse slopes of the exponential fits to the excess after subtraction of the p+p baseline are 285±53(stat)±57(syst)MeV/c and 333±72(stat)±45(syst)MeV/c for minimum bias and 0%–40% most-central events, respectively. The rapidity density, dN/dy, of photons demonstrates the same power law as a function of dNch/dη observed in Au+Au at the same collision energy.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
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Volume of the periodical
98
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
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UT code for WoS article
000450265000004
EID of the result in the Scopus database
2-s2.0-85057133067