Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC.
نویسندگان
- L Adamczyk
- J K Adkins
- G Agakishiev
- M M Aggarwal
- Z Ahammed
- I Alekseev
- J Alford
- C D Anson
- A Aparin
- D Arkhipkin
- E C Aschenauer
- G S Averichev
- A Banerjee
- D R Beavis
- R Bellwied
- A Bhasin
- A K Bhati
- P Bhattarai
- H Bichsel
- J Bielcik
- J Bielcikova
- L C Bland
- I G Bordyuzhin
- W Borowski
- J Bouchet
- A V Brandin
- S G Brovko
- S Bültmann
- I Bunzarov
- T P Burton
- J Butterworth
- H Caines
- M Calderón de la Barca Sánchez
- D Cebra
- R Cendejas
- M C Cervantes
- P Chaloupka
- Z Chang
- S Chattopadhyay
- H F Chen
- J H Chen
- L Chen
- J Cheng
- M Cherney
- A Chikanian
- W Christie
- J Chwastowski
- M J M Codrington
- G Contin
- J G Cramer
- H J Crawford
- X Cui
- S Das
- A Davila Leyva
- L C De Silva
- R R Debbe
- T G Dedovich
- J Deng
- A A Derevschikov
- R Derradi de Souza
- S Dhamija
- B di Ruzza
- L Didenko
- C Dilks
- F Ding
- P Djawotho
- X Dong
- J L Drachenberg
- J E Draper
- C M Du
- L E Dunkelberger
- J C Dunlop
- L G Efimov
- J Engelage
- K S Engle
- G Eppley
- L Eun
- O Evdokimov
- O Eyser
- R Fatemi
- S Fazio
- J Fedorisin
- P Filip
- E Finch
- Y Fisyak
- C E Flores
- C A Gagliardi
- D R Gangadharan
- D Garand
- F Geurts
- A Gibson
- M Girard
- S Gliske
- L Greiner
- D Grosnick
- D S Gunarathne
- Y Guo
- A Gupta
- S Gupta
- W Guryn
- B Haag
- A Hamed
- L-X Han
- R Haque
- J W Harris
- S Heppelmann
- A Hirsch
- G W Hoffmann
- D J Hofman
- S Horvat
- B Huang
- H Z Huang
- X Huang
- P Huck
- T J Humanic
- G Igo
- W W Jacobs
- H Jang
- E G Judd
- S Kabana
- D Kalinkin
- K Kang
- K Kauder
- H W Ke
- D Keane
- A Kechechyan
- A Kesich
- Z H Khan
- D P Kikola
- I Kisel
- A Kisiel
- D D Koetke
- T Kollegger
- J Konzer
- I Koralt
- L Kotchenda
- A F Kraishan
- P Kravtsov
- K Krueger
- I Kulakov
- L Kumar
- R A Kycia
- M A C Lamont
- J M Landgraf
- K D Landry
- J Lauret
- A Lebedev
- R Lednicky
- J H Lee
- M J LeVine
- C Li
- W Li
- X Li
- X Li
- Y Li
- Z M Li
- M A Lisa
- F Liu
- T Ljubicic
- W J Llope
- M Lomnitz
- R S Longacre
- X Luo
- G L Ma
- Y G Ma
- D M M D Madagodagettige Don
- D P Mahapatra
- R Majka
- S Margetis
- C Markert
- H Masui
- H S Matis
- D McDonald
- T S McShane
- N G Minaev
- S Mioduszewski
- B Mohanty
- M M Mondal
- D A Morozov
- M K Mustafa
- B K Nandi
- Md Nasim
- T K Nayak
- J M Nelson
- G Nigmatkulov
- L V Nogach
- S Y Noh
- J Novak
- S B Nurushev
- G Odyniec
- A Ogawa
- K Oh
- A Ohlson
- V Okorokov
- E W Oldag
- D L Olvitt
- M Pachr
- B S Page
- S K Pal
- Y X Pan
- Y Pandit
- Y Panebratsev
- T Pawlak
- B Pawlik
- H Pei
- C Perkins
- W Peryt
- P Pile
- M Planinic
- J Pluta
- N Poljak
- J Porter
- A M Poskanzer
- N K Pruthi
- M Przybycien
- P R Pujahari
- J Putschke
- H Qiu
- A Quintero
- S Ramachandran
- R Raniwala
- S Raniwala
- R L Ray
- C K Riley
- H G Ritter
- J B Roberts
- O V Rogachevskiy
- J L Romero
- J F Ross
- A Roy
- L Ruan
- J Rusnak
- O Rusnakova
- N R Sahoo
- P K Sahu
- I Sakrejda
- S Salur
- J Sandweiss
- E Sangaline
- A Sarkar
- J Schambach
- R P Scharenberg
- A M Schmah
- W B Schmidke
- N Schmitz
- J Seger
- P Seyboth
- N Shah
- E Shahaliev
- P V Shanmuganathan
- M Shao
- B Sharma
- W Q Shen
- S S Shi
- Q Y Shou
- E P Sichtermann
- R N Singaraju
- M J Skoby
- D Smirnov
- N Smirnov
- D Solanki
- P Sorensen
- H M Spinka
- B Srivastava
- T D S Stanislaus
- J R Stevens
- R Stock
- M Strikhanov
- B Stringfellow
- M Sumbera
- X Sun
- X M Sun
- Y Sun
- Z Sun
- B Surrow
- D N Svirida
- T J M Symons
- M A Szelezniak
- J Takahashi
- A H Tang
- Z Tang
- T Tarnowsky
- J H Thomas
- A R Timmins
- D Tlusty
- M Tokarev
- S Trentalange
- R E Tribble
- P Tribedy
- B A Trzeciak
- O D Tsai
- J Turnau
- T Ullrich
- D G Underwood
- G Van Buren
- G van Nieuwenhuizen
- M Vandenbroucke
- J A Vanfossen
- R Varma
- G M S Vasconcelos
- A N Vasiliev
- R Vertesi
- F Videbæk
- Y P Viyogi
- S Vokal
- S A Voloshin
- A Vossen
- M Wada
- F Wang
- G Wang
- H Wang
- J S Wang
- X L Wang
- Y Wang
- Y Wang
- G Webb
- J C Webb
- G D Westfall
- H Wieman
- S W Wissink
- R Witt
- Y F Wu
- Z Xiao
- W Xie
- K Xin
- H Xu
- J Xu
- N Xu
- Q H Xu
- Y Xu
- Z Xu
- W Yan
- C Yang
- Y Yang
- Y Yang
- Z Ye
- P Yepes
- L Yi
- K Yip
- I-K Yoo
- N Yu
- Y Zawisza
- H Zbroszczyk
- W Zha
- J B Zhang
- J L Zhang
- S Zhang
- X P Zhang
- Y Zhang
- Z P Zhang
- F Zhao
- J Zhao
- C Zhong
- X Zhu
- Y H Zhu
- Y Zoulkarneeva
- M Zyzak
چکیده
Local parity-odd domains are theorized to form inside a quark-gluon plasma which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magnetic effect. The experimental observation of charge separation has previously been reported for heavy-ion collisions at the top RHIC energies. In this Letter, we present the results of the beam-energy dependence of the charge correlations in Au+Au collisions at midrapidity for center-of-mass energies of 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV from the STAR experiment. After background subtraction, the signal gradually reduces with decreased beam energy and tends to vanish by 7.7 GeV. This implies the dominance of hadronic interactions over partonic ones at lower collision energies.
منابع مشابه
Revealing the collision energy dependence of η/s in RHIC-BES Au+Au collisions using Bayesian statistics
We investigate the collision energy dependence of η/s in a transport + viscous hydrodynamics hybrid model. A Bayesian analysis is performed on RHIC beam energy scan data for Au + Au collisions at √ sNN = 19.6, 39, and 62.4 GeV. The resulting posterior probability distributions for the model parameters show a preference for a larger value of η/s at 19.6 GeV compared to 62.4 GeV, indicating depen...
متن کاملIdentical Particle Interferometry at STAR
We present preliminary results from a two-particle intensity interferometry analysis of charged pions and neutral kaons emitted from Au+Au collisions at √ s NN = 130 and 200 GeV measured in the STAR detector at RHIC. The dependence of the apparent pion source on beam energy, multiplicity, transverse momentum and emission angle with respect to the reaction plane are discussed.
متن کاملPion Interferometry in Auau Collisions at √ S Nn =200 Gev
We present preliminary results from a two-pion intensity interferometry analysis from Au+Au collisions at √ s NN =200 GeV measured in the STAR detector at RHIC. The dependence of the apparent pion source on multiplicity and transverse momentum are discussed and compared with preliminary results from d+Au and p+p collisions at the same beam energy.
متن کامل1 2 Ju n 20 09 Center of mass energy and system - size dependence of photon production at forward rapidity at RHIC
We present the multiplicity and pseudorapidity distributions of photons produced in Au+Au and Cu+Cu collisions at √ sNN = 62.4 and 200 GeV. The photons are measured in the region −3.7 < η < −2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent ...
متن کاملun 2 00 8 Rapidity dependent K / π ratios in Au + Au collisions at √ s NN = 62 . 4 GeV
We report on measurements of identified particle yields from Au-Au collisions at √ s N N = 62.4 GeV made with the BRAHMS spectrometer. Here we will concentrate on the charged K/π ratios as function of rapidity and baryo-chemical potential. We find that the K/π ratios measured at different rapidities in the analysed dataset have a common dependence with the same ratios measured in mid-rapidity a...
متن کامل4 Strangelet search at RHIC
Two position sensitive Shower Maximum Detector (SMDs) for Zero-Degree Calorimeters (ZDCs) were installed by STAR before run 2004 at both upstream and downstream from the interaction point along the beam axis where particles with small rigidity are swept away by strong magnetic field. The ZDC-SMDs provides information about neutral energy deposition as a function of transverse position in ZDCs. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 113 5 شماره
صفحات -
تاریخ انتشار 2014