Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at root s_NN =200 GeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00240001" target="_blank" >RIV/68407700:21340/16:00240001 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevC.93.034904" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.93.034904</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.93.034904" target="_blank" >10.1103/PhysRevC.93.034904</a>

Result language

angličtina

Original language name

Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at root s_NN =200 GeV

Original language description

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in minimum bias Au+Au collisions at root s_NN=200 GeV via the yields of electrons from semileptonic decays of charm and bottom hadrons. Previous heavy flavor electron measurements indicated substantial modification in the momentum distribution of the parent heavy quarks owing to the quark-gluon plasma created in these collisions. For the first time, using the PHENIX silicon vertex detector to measure precision displaced tracking, the relative contributions from charm and bottom hadrons to these electrons as a function of transverse momentum are measured in Au+Au collisions. We compare the fraction of electrons from bottom hadrons to previously published results extracted from electron-hadron correlations in p+p collisions at root s_NN=200 GeV and find the fractions to be similar within the large uncertainties on both measurements for p T >4GeV/c . We use the bottom electron fractions in Au+Au and p+p along with the previously measured heavy flavor electron R_AA to calculate the R_AA for electrons from charm and bottom hadron decays separately. We find that electrons from bottom hadron decays are less suppressed than those from charm for the region 3<p T <4GeV/c .

Czech name

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Czech description

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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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

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Volume of the periodical

93

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

29

Pages from-to

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UT code for WoS article

000371740400007

EID of the result in the Scopus database

2-s2.0-84960485023