One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

ALICE Collaboration

doi:10.1103/PhysRevC.92.054908

One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

ALICE Collaboration

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Research output: Contribution to journal › Article › Academic › peer-review

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 π±π±, K±K±, K0
SK0
S, pp, and pp correlations from Pb-Pb collisions at √sNN = 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 mT which is consistent with hydrodynamic model predictions for central collisions.
The kaon and proton source sizes can be reasonably described by approximate mT scaling.

Original language	English
Article number	054908
Number of pages	15
Journal	Physical Review C - Nuclear Physics
Volume	92
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.92.054908
Publication status	Published - 19 Nov 2015

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@article{c61cae5bd54446deaa59c49b5a2625d9,

title = "One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV",

abstract = "The size of the particle emission region in high-energy collisions can be deduced using the femtoscopiccorrelations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics andCoulomb and strong final state interactions. In this paper, results are presented from femtoscopic analysesof π±π±, K±K±, K0SK0S, pp, and pp correlations from Pb-Pb collisions at √sNN = 2.76 TeV by the ALICEexperiment at the LHC. One-dimensional radii of the system are extracted from correlation functions in terms ofthe invariant momentum difference of the pair. The comparison of the measured radii with the predictions froma hydrokinetic model is discussed. The pion and kaon source radii display a monotonic decrease with increasingaverage pair transverse mass mT which is consistent with hydrodynamic model predictions for central collisions.The kaon and proton source sizes can be reasonably described by approximate mT scaling.",

author = "J. Adam and D. Adamova and Aggarwal, {M. M.} and Rinella, {G. Aglieri} and M. Agnello and N. Agrawal and Z. Ahammed and S. Basu and C. Bedda and Bertens, {R. A.} and C. Bianchin and S. Bjelogrlic and M. Botje and A. Caliva and M. Chojnacki and P. Christakoglou and T. Chujo and A. Dobrin and A. Dubla and L. Fabbietti and A. Grelli and R. Gupta and Keijdener, {D. L. D.} and M. Krzewicki and Kuijer, {P. G.} and {La Pointe}, {S. L.} and E. Leogrande and Lodato, {D. F.} and G. Luparello and J. Margutti and A. Mischke and N. Mohammadi and S. Muhuri and G. Nooren and {Oliveira Da Silva}, {A. C.} and T. Peitzmann and N. Poljak and S. Rajput and T. Richert and E. Rocco and Manso, {A. Rodriguez} and E. Rocco and Snellings, {R. J. M.} and D. Thomas and {Van der Maarel}, J. and Veen, {A. M.} and M. Veldhoen and M. Verweij and H. Yang and Y. Zhou and {ALICE Collaboration}",

year = "2015",

month = nov,

day = "19",

doi = "10.1103/PhysRevC.92.054908",

language = "English",

volume = "92",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, M. M.

AU - Rinella, G. Aglieri

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Basu, S.

AU - Bedda, C.

AU - Bertens, R. A.

AU - Bianchin, C.

AU - Bjelogrlic, S.

AU - Botje, M.

AU - Caliva, A.

AU - Chojnacki, M.

AU - Christakoglou, P.

AU - Chujo, T.

AU - Dobrin, A.

AU - Dubla, A.

AU - Fabbietti, L.

AU - Grelli, A.

AU - Gupta, R.

AU - Keijdener, D. L. D.

AU - Krzewicki, M.

AU - Kuijer, P. G.

AU - La Pointe, S. L.

AU - Leogrande, E.

AU - Lodato, D. F.

AU - Luparello, G.

AU - Margutti, J.

AU - Mischke, A.

AU - Mohammadi, N.

AU - Muhuri, S.

AU - Nooren, G.

AU - Oliveira Da Silva, A. C.

AU - Peitzmann, T.

AU - Poljak, N.

AU - Rajput, S.

AU - Richert, T.

AU - Rocco, E.

AU - Manso, A. Rodriguez

AU - Rocco, E.

AU - Snellings, R. J. M.

AU - Thomas, D.

AU - Van der Maarel, J.

AU - Veen, A. M.

AU - Veldhoen, M.

AU - Verweij, M.

AU - Yang, H.

AU - Zhou, Y.

AU - ALICE Collaboration

PY - 2015/11/19

Y1 - 2015/11/19

N2 - The size of the particle emission region in high-energy collisions can be deduced using the femtoscopiccorrelations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics andCoulomb and strong final state interactions. In this paper, results are presented from femtoscopic analysesof π±π±, K±K±, K0SK0S, pp, and pp correlations from Pb-Pb collisions at √sNN = 2.76 TeV by the ALICEexperiment at the LHC. One-dimensional radii of the system are extracted from correlation functions in terms ofthe invariant momentum difference of the pair. The comparison of the measured radii with the predictions froma hydrokinetic model is discussed. The pion and kaon source radii display a monotonic decrease with increasingaverage pair transverse mass mT which is consistent with hydrodynamic model predictions for central collisions.The kaon and proton source sizes can be reasonably described by approximate mT scaling.

AB - The size of the particle emission region in high-energy collisions can be deduced using the femtoscopiccorrelations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics andCoulomb and strong final state interactions. In this paper, results are presented from femtoscopic analysesof π±π±, K±K±, K0SK0S, pp, and pp correlations from Pb-Pb collisions at √sNN = 2.76 TeV by the ALICEexperiment at the LHC. One-dimensional radii of the system are extracted from correlation functions in terms ofthe invariant momentum difference of the pair. The comparison of the measured radii with the predictions froma hydrokinetic model is discussed. The pion and kaon source radii display a monotonic decrease with increasingaverage pair transverse mass mT which is consistent with hydrodynamic model predictions for central collisions.The kaon and proton source sizes can be reasonably described by approximate mT scaling.

U2 - 10.1103/PhysRevC.92.054908

DO - 10.1103/PhysRevC.92.054908

M3 - Article

SN - 0556-2813

VL - 92

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 054908

ER -

One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

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