Language:

K0 S and Λ production in Pb–Pb collisions at √ sNN = 2.76 TeV

B Abelev Caio Alves Garcia Prado; Gabriel Oliveira Valeriano de Barros; Airton Deppman; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Caio Lagana Fernandes; Denise Aparecida Moreira de Godoy; Marcelo Gameiro Munhoz; Antonio Carlos Oliveira da Silva; Elienos Pereira de Oliveira Filho; Alexandre Alarcon do Passo Suaide; Alejandro Szanto de Toledo

São Paulo 2013

Online access

Actions
1. Add to e-Shelf
2. Remove from e-Shelf
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
K0 S and Λ production in Pb–Pb collisions at √ sNN = 2.76 TeV
Author: B Abelev
Caio Alves Garcia Prado; Gabriel Oliveira Valeriano de Barros; Airton Deppman; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Caio Lagana Fernandes; Denise Aparecida Moreira de Godoy; Marcelo Gameiro Munhoz; Antonio Carlos Oliveira da Silva; Elienos Pereira de Oliveira Filho; Alexandre Alarcon do Passo Suaide; Alejandro Szanto de Toledo
Subjects: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS
Notes: arXiv.1307.5530
Description: The ALICE measurement of K0 S and Λ production at mid-rapidity in Pb–Pb collisions at √ sNN = 2.76 TeV is presented. The transverse momentum (pT) spectra are shown for several collision centrality intervals and in the pT range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c. The pT dependence of the Λ/K 0 S ratios exhibits maxima in the vicinity of 3 GeV/c, and the positions of the maxima shift towards higher pT with increasing collision centrality. The magnitude of these maxima increases by almost a factor of three between most peripheral and most central Pb–Pb collisions. This baryon excess at intermediate pT is not observed in pp interactions at √ s = 0.9 TeV and at √ s = 7 TeV. Qualitatively, the baryon enhancement in heavy-ion collisions is expected from radial ﬂow. However, the measured pT spectra above 2 GeV/c progressively decouple from hydrodynamical-model calculations. For higher values of pT, models that incorporate the inﬂuence of the medium on the fragmentation and hadronization processes describe qualitatively the pT dependence of the Λ/K 0 S ratio.
Publisher: São Paulo
Creation Date: 2013
Format: 16 p.
Language: English

Links

Back to results list

Previous Result 2 Next Go to Next page

Implemented by: Social Network Logos:

K0 S and Λ production in Pb–Pb collisions at √ sNN = 2.76 TeV

São Paulo 2013

Searching Remote Databases, Please Wait