検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年
検索結果: 1 件中 1件目~1件目を表示
  • 1

発表形式

Initialising ...

選択項目を絞り込む

掲載資料名

Initialising ...

発表会議名

Initialising ...

筆頭著者名

Initialising ...

キーワード

Initialising ...

使用言語

Initialising ...

発行年

Initialising ...

開催年

Initialising ...

選択した検索結果をダウンロード

論文

Single electron yields from semileptonic charm and bottom hadron decays in Au + Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV

Adare, A.*; 長谷川 勝一; 今井 憲一; 永宮 正治; 佐甲 博之; 佐藤 進; 谷田 聖; PHENIX Collaboration*; 他426名*

Physical Review C, 93(3), p.034904_1 - 034904_29, 2016/03

AA2015-1023.pdf:2.82MB

 被引用回数:37 パーセンタイル:93.27(Physics, Nuclear)

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in minimum bias Au + Au collisions at $$sqrt{s_{NN}}$$ = 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 $$sqrt{s_{NN}}$$ = 200 GeV and find the fractions to be similar within the large uncertainties on both measurements for $$p_T>$$ 4 GeV/$$c$$. 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$$<p_T<$$ 4 GeV/$$c$$.

1 件中 1件目~1件目を表示
  • 1