One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm {NN}}}$ =2.76 TeV

J. Adam; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; S. Kox; J.S. Real; C. Silvestre; A. Vauthier; R. Vernet; I. Belikov; B. Hippolyte; C. Kuhn; A. Maire; L. Molnar; C. Roy; X. Sanchez Castro; V. Barret; N. Bastid; A. Batista Camejo; P. Crochet; P. Dupieux; V.J.G. Feuillard; S. Li; X. Lopez; F. Manso; S. Porteboeuf-Houssais; P. Rosnet; B. Vulpescu; L. Aphecetche; B. Audurier; Guillaume Batigne; C. Cheshkov; B. Cheynis; L. Ducroux; B. Erazmus; M. Estienne; J.-Y. Grossiord; J. Martin Blanco; G. Martınez Garcıa; L. Massacrier; D.A. Moreira De Godoy; A. Morreale; P. Pillot; L. Ronflette; Y. Schutz; A. Shabetai; D. Stocco; B. Teyssier; R. Tieulent; A. Uras; M. Wang; J. Zhu; Z. Conesa Del Valle; I. Das; B. Espagnon; C. Hadjidakis; I. Lakomov; C. Suire; J. D. Tapia Takaki; M. Tarhini; L. Valencia Palomo

doi:10.1103/PhysRevC.92.054908

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 L. Aphecetche ⁶ B. Audurier ⁶ Guillaume Batigne ⁶ C. Cheshkov ⁷ B. Cheynis ⁷ L. Ducroux ⁷ B. Erazmus ⁶ M. Estienne ⁶ J.-Y. Grossiord ⁷ J. Martin Blanco ⁶ G. Martınez Garcıa ⁶ L. Massacrier ⁶ D.A. Moreira De Godoy ⁶ A. Morreale P. Pillot ⁶ L. Ronflette ⁶ Y. Schutz ⁶ A. Shabetai ⁶ D. 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

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.

Type de document :

Article dans une revue

Physical Review C, American Physical Society, 2015, 92, pp.054908. 〈10.1103/PhysRevC.92.054908〉

Domaine :

Physique [physics] / Physique Nucléaire Expérimentale [nucl-ex]

Physique [physics] / Physique des Hautes Energies - Expérience [hep-ex]

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http://hal.in2p3.fr/in2p3-01172185
Contributeur : Emmanuelle Vernay <>
Soumis le : mardi 7 juillet 2015 - 09:22:11
Dernière modification le : mardi 19 juin 2018 - 01:19:55

One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm {NN}}}$ =2.76 TeV

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One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm {NN}}}$ =2.76 TeV

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