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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 .

Název v anglickém jazyce

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

Popis výsledku anglicky

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 .

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

—

Svazek periodika

93

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

29

Strana od-do

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Kód UT WoS článku

000371740400007

EID výsledku v databázi Scopus

2-s2.0-84960485023