Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F04%3A00110189" target="_blank" >RIV/61389005:_____/04:00110189 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV

Original language description

We report inclusive photon measurements about midrapidity (/y/<0.5) from Au-197+Au-197 collisions at roots(NN)=130 GeV at RHIC. Photon pair conversions were reconstructed from electron and positron tracks measured with the Time Projection Chamber (TPC) of the STAR experiment. With this method, an energy resolution of DeltaE/Eapproximate to2% at 0.5 GeV has been achieved. Reconstructed photons have also been used to measure the transverse momentum (p(t)) spectra of pi(0) mesons about midrapidity (/y/<1)via the pi(0)-->gammagamma decay channel. The fractional contribution of the pi(0)-->gammagamma decay to the inclusive photon spectrum decreases by 20%+/-5% between p(t)=1.65 GeV/c and p(t)=2.4 GeV/c in the most central events, indicating that relative to pi(0)-->gammagamma decay the contribution of other photon sources is substantially increasing.

Czech name

Produkce fotonů a neutrálních pionů v srážkách Au+Au při energii 130 GeV

Czech description

Zpráva o měření inkluzivních fotonů v střední rapiditě z Au+Au srážek při energii 130 GeV na RHIC. Konverze fotonových párů jsou rekonsturovány z elektronových a pozitronových stop měřených pomocí TPC v experimentu STAR. Touto metodou bylo dosaženo energetického rozlišení 2% při energii 0,5 GeV.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/ME%20475" target="_blank" >ME 475: Multi-boson effects at RHIC</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review

ISSN

0556-2813

e-ISSN

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Volume of the periodical

70

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

1

Pages from-to

044902

UT code for WoS article

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EID of the result in the Scopus database

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