検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Transverse energy production and charged-particle multiplicity at midrapidity in various systems from $$sqrt{s_{NN}}$$ = 7.7 to 200 GeV

$$sqrt{s_{NN}}$$=7.7から200GeVでの各種イオンの衝突における横方向エネルギーの生成と荷電粒子の多重度測定

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699名*

Adare, A.*; Hasegawa, Shoichi; Imai, Kenichi; Nagamiya, Shoji; Sako, Hiroyuki; Sato, Susumu; Tanida, Kiyoshi; PHENIX Collaboration*; 699 of others*

Measurements of midrapidity charged-particle multiplicity distributions, $$dN_{rm ch}/deta$$, and midrapidity transverse-energy distributions, $$dE_T/deta$$, are presented for a variety of collision systems and energies. Included are distributions for Au+Au collisions at $$sqrt{s_{NN}}$$ = 200, 130, 62.4, 39, 27, 19.6, 14.5, and 7.7 GeV, Cu + Cu collisions at $$sqrt{s_{NN}}$$ = 200, and 62.4 GeV, Cu + Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV, U + U collisions at $$sqrt{s_{NN}}$$ = 193 GeV, $$d$$ + Au collisions at $$sqrt{s_{NN}}$$ =200 GeV, $$^3$$He + Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV, and $$p + p$$ collisions at $$sqrt{s_{NN}}$$ = 200 GeV. Centrality-dependent distributions at midrapidity are presented in terms of the number of nucleon participants, $$N_{rm part}$$, and the number of constituent quark participants, $$N_{rm qp}$$. For all A + A collisions down to $$sqrt{s_{NN}}$$ = 7.7 GeV, it is observed that the midrapidity data are better described by scaling with $$N_{rm qp}$$ than scaling with $$N_{rm part}$$. Also presented are estimates of the Bjorken energy density, $$epsilon_{rm BJ}$$, and the ratio of $$dE_T/deta$$ to $$dN_{rm ch}/deta$$, the latter of which is seen to be constant as a function of centrality for all systems.

Access

:

- Accesses

InCites™

:

パーセンタイル:98.92

分野:Physics, Nuclear

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.