One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm {NN}}}$ =2.76 TeV
J. Adam
,
G. Conesa Balbastre
(1)
,
J. Faivre
(1)
,
C. Furget
(1)
,
R. Guernane
(1)
,
S. Kox
(1)
,
J.S. Real
(1)
,
C. Silvestre
(1)
,
A. Vauthier
(1)
,
R. Vernet
(2)
,
I. Belikov
(3)
,
B. Hippolyte
(3)
,
C. Kuhn
(3)
,
A. Maire
(3)
,
L. Molnar
(3)
,
C. Roy
(3)
,
X. Sanchez Castro
(3)
,
V. Barret
(4)
,
N. Bastid
(4)
,
A. Batista Camejo
(4)
,
P. Crochet
(4)
,
P. Dupieux
(4)
,
V.J.G. Feuillard
(5, 4)
,
S. Li
(4)
,
X. Lopez
(4)
,
F. Manso
(4)
,
S. Porteboeuf-Houssais
(4)
,
P. Rosnet
(4)
,
B. Vulpescu
(4)
,
Laurent Aphecetche
(6)
,
B. Audurier
(6)
,
Guillaume Batigne
(6)
,
C. Cheshkov
(7)
,
B. Cheynis
(7)
,
L. Ducroux
(7)
,
B. Erazmus
(6)
,
Magali Estienne
(6)
,
Marie Germain
(6)
,
J.-Y. Grossiord
(7)
,
J. Martin Blanco
(6)
,
Gines Martinez Garcia
(6)
,
L. Massacrier
(6)
,
D.A. Moreira De Godoy
(6)
,
A. Morreale
,
Philippe Pillot
(6)
,
L. Ronflette
(6)
,
Y. Schutz
(6)
,
Alexandre Shabetai
(6)
,
Diego Stocco
(6)
,
B. Teyssier
(7)
,
R. Tieulent
,
A. Uras
(7)
,
M. Wang
(6)
,
J. Zhu
(6)
,
Z. Conesa Del Valle
(8)
,
I. Das
(8)
,
B. Espagnon
(8)
,
C. Hadjidakis
(8)
,
I. Lakomov
(8)
,
C. Suire
(8)
,
J. D. Tapia Takaki
(8)
,
M. Tarhini
(8)
,
L. Valencia Palomo
(8)
1
LPSC -
Laboratoire de Physique Subatomique et de Cosmologie
2 CC-IN2P3 - Centre de Calcul de l'IN2P3
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
5 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
6 SUBATECH - Laboratoire SUBATECH Nantes
7 IPNL - Institut de Physique Nucléaire de Lyon
8 IPNO - Institut de Physique Nucléaire d'Orsay
2 CC-IN2P3 - Centre de Calcul de l'IN2P3
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
5 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
6 SUBATECH - Laboratoire SUBATECH Nantes
7 IPNL - Institut de Physique Nucléaire de Lyon
8 IPNO - Institut de Physique Nucléaire d'Orsay
J. Adam
- Function : Author
G. Conesa Balbastre
- Function : Author
- PersonId : 737477
- IdHAL : conesa-balbastre-gustavo
- ORCID : 0000-0001-5283-3520
J.S. Real
- Function : Author
- PersonId : 737490
- IdHAL : jean-sebastien-real
- ORCID : 0000-0003-1584-783X
- IdRef : 156873133
C. Roy
- Function : Author
- PersonId : 742351
- IdHAL : christelle-roy
- ORCID : 0000-0001-5920-6271
Laurent Aphecetche
- Function : Author
- PersonId : 2010
- IdHAL : laurent-aphecetche
- ORCID : 0000-0001-7662-3878
- IdRef : 113847653
Guillaume Batigne
- Function : Author
- PersonId : 175820
- IdHAL : guillaume-batigne
- ORCID : 0000-0001-8638-6300
- IdRef : 077207874
B. Cheynis
- Function : Author
- PersonId : 750577
- IdHAL : brigitte-cheynis
- IdRef : 032215606
Magali Estienne
- Function : Author
- PersonId : 179790
- IdHAL : magali-estienne
- ORCID : 0000-0003-0687-5580
Marie Germain
- Function : Author
- PersonId : 170960
- IdHAL : marie-germain
- ORCID : 0000-0001-7382-1609
- IdRef : 176579958
Gines Martinez Garcia
- Function : Author
- PersonId : 169952
- IdHAL : gines-martinez
- ORCID : 0000-0002-8657-6742
- IdRef : 068952961
A. Morreale
- Function : Author
Philippe Pillot
- Function : Author
- PersonId : 175815
- IdHAL : ppillot
- ORCID : 0000-0002-9067-0803
Alexandre Shabetai
- Function : Author
- PersonId : 181202
- IdHAL : alexandre-shabetai
- ORCID : 0000-0003-3069-726X
Diego Stocco
- Function : Author
- PersonId : 170966
- IdHAL : diego-stocco
- ORCID : 0000-0002-5377-5163
- IdRef : 204479150
R. Tieulent
- Function : Author
Abstract
The size of the particle emission region in high-energy collisions can be deduced using the femtoscopic correlations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics and Coulomb and strong final state interactions. In this paper, results are presented from femtoscopic analyses of $\pi^{\pm}\pi^{\pm}$, ${\rm K}^{\pm}{\rm K}^{\pm}$, ${\rm K}^{0}_S{\rm K}^{0}_S$, ${\rm pp}$, and ${\rm \overline{p}}{\rm \overline{p}}$ correlations from Pb-Pb collisions at $\sqrt{s_{\mathrm {NN}}}=2.76$ TeV by the ALICE experiment at the LHC. One-dimensional radii of the system are extracted from correlation functions in terms of the invariant momentum difference of the pair. The comparison of the measured radii with the predictions from a hydrokinetic model is discussed. The pion and kaon source radii display a monotonic decrease with increasing average pair transverse mass $m_{\rm T}$ which is consistent with hydrodynamic model predictions for central collisions. The kaon and proton source sizes can be reasonably described by approximate $m_{\rm T}$-scaling.