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Freeze-out dynamics via charged kaon femtoscopy in √s NN=200 GeV central Au + Au collisions
Authors
L Adamczyk
JK Adkins
+98 more
G Agakishiev
MM Aggarwal
Z Ahammed
I Alekseev
J Alford
CD Anson
A Aparin
D Arkhipkin
E Aschenauer
GS Averichev
J Balewski
A Banerjee
Z Barnovska
DR Beavis
R Bellwied
MJ Betancourt
RR Betts
A Bhasin
AK Bhati
Bhattarai
H Bichsel
J Bielcik
J Bielcikova
LC Bland
IG Bordyuzhin
W Borowski
J Bouchet
AV Brandin
SG Brovko
E Bruna
I Bunzarov
TP Burton
J Butterworth
S Bültmann
H Caines
M Calderón De La Barca Sánchez
D Cebra
R Cendejas
MC Cervantes
P Chaloupka
Z Chang
S Chattopadhyay
HF Chen
JH Chen
JY Chen
L Chen
J Cheng
M Cherney
A Chikanian
W Christie
P Chung
J Chwastowski
MJM Codrington
R Corliss
JG Cramer
HJ Crawford
X Cui
S Das
A Davila Leyva
LC De Silva
RR Debbe
TG Dedovich
J Deng
R Derradi De Souza
S Dhamija
B Di Ruzza
L Didenko
Dilks
F Ding
A Dion
P Djawotho
X Dong
JL Drachenberg
JE Draper
CM Du
LE Dunkelberger
JC Dunlop
LG Efimov
M Elnimr
J Engelage
KS Engle
G Eppley
L Eun
O Evdokimov
R Fatemi
S Fazio
J Fedorisin
RG Fersch
P Filip
E Finch
Y Fisyak
CE Flores
CA Gagliardi
DR Gangadharan
D Garand
F Geurts
A Gibson
S Gliske
Publication date
19 September 2013
Publisher
eScholarship, University of California
Abstract
We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from √s =200 GeV Au+Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event-generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source function is generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m over the interval of 0.55≤m ≤1.15 GeV/c2. While the kaon radii are adequately described by the m -scaling in the outward and sideward directions, in the longitudinal direction the lowest m value exceeds the expectations from a pure hydrodynamical model prediction. © 2013 American Physical Society. NN T T T
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Last time updated on 25/12/2021