dc.contributor.author | PHENIX Collaboration | |
dc.date.accessioned | 2018-12-05T11:23:20Z | |
dc.date.available | 2018-12-05T11:23:20Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | PHENIX Collaboration. (2018). Low-momentum direct-photon measurement in Cu + Cu collisions at √sNN = 200 GeV. <i>Physical Review C</i>, <i>98</i>(5), Article 054902. <a href="https://doi.org/10.1103/PhysRevC.98.054902" target="_blank">https://doi.org/10.1103/PhysRevC.98.054902</a> | |
dc.identifier.other | CONVID_28740156 | |
dc.identifier.other | TUTKAID_79629 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/60502 | |
dc.description.abstract | We measured direct photons for pT < 5 GeV/c in minimum bias and 0%–40% most-central events at
midrapidity for Cu+Cu collisions at √sNN = 200 GeV. 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 < 4 GeV/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. | fi |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.relation.ispartofseries | Physical Review C | |
dc.rights | CC BY 4.0 | |
dc.subject.other | relativistic heavy-ion collisions | |
dc.title | Low-momentum direct-photon measurement in Cu + Cu collisions at √sNN = 200 GeV | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201811234856 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2018-11-23T10:15:12Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 2469-9985 | |
dc.relation.numberinseries | 5 | |
dc.relation.volume | 98 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © PHENIX Collaboration, 2018 | |
dc.rights.accesslevel | openAccess | fi |
dc.subject.yso | hiukkasfysiikka | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p15576 | |
dc.rights.url | https://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1103/PhysRevC.98.054902 | |
dc.type.okm | A1 | |