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1.	Aamodt, K., et al. (author) Strange particle production in proton-proton collisions at root s=0.9 TeV with ALICE at the LHC 2011 In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 71:3 Journal article (peer-reviewed)abstract The production of mesons containing strange quarks (K-S(0), phi) and both singly and doubly strange baryons (Lambda, (Lambda) over bar, and Xi(-) + (Xi) over bar (+)) are measured at mid-rapidity in pp collisions at root s = 0.9 TeV with the ALICE experiment at the LHC. The results are obtained from the analysis of about 250 k minimum bias events recorded in 2009. Measurements of yields (dN/dy) and transverse momentum spectra at mid-rapidity for inelastic pp collisions are presented. For mesons, we report yields (< dN/dy >) of 0.184 +/- 0.002(stat.) +/- 0.006(syst.) for K-S(0) and 0.021 +/- 0.004(stat.) +/- 0.003(syst.) for phi. For baryons, we find < dN/dy > = 0.048 +/- 0.001(stat.) +/- 0.004(syst.) for Lambda, 0.047 +/- 0.002(stat.) +/- 0.005(syst.) for (Lambda) over bar and 0.0101 +/- 0.0020(stat.) +/- 0.0009(syst.) for Xi(-) + (Xi) over bar (+). The results are also compared with predictions for identified particle spectra from QCD-inspired models and provide a baseline for comparisons with both future pp measurements at higher energies and heavy-ion collisions.

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Type of content: peer-reviewed (1)

Author/Editor: Silvermyr, D. (1); Oskarsson, Anders (1); Otterlund, Ingvar (1); Stenlund, Evert (1); Kim, S. H. (1); Kretz, M. (1); show more...; Lee, S. C. (1); Liu, L. (1); Yang, H. (1); Zhang, X. (1); Turvey, A. J. (1); Urban, J. (1); Li, X. (1); Gupta, A. (1); Mayani, D. (1); Sharma, S. (1); Ivanov, A. (1); Podesta-Lerma, P. L. ... (1); Roy, P. (1); Aamodt, K. (1); Abrahantes Quintana, ... (1); Adamova, D. (1); Rinella, G. Aglieri (1); Agocs, A. G. (1); Ahammed, Z. (1); Ahmad, N. (1); Ahn, S. U. (1); Akindinov, A. (1); Aleksandrov, D. (1); Alessandro, B. (1); Alfaro Molina, R. (1); Alici, A. (1); Almaraz Avina, E. (1); Alt, T. (1); Altini, V. (1); Altinpinar, S. (1); Andrei, C. (1); Andronic, A. (1); Anson, C. (1); Anticic, T. (1); Antinori, F. (1); Antonioli, P. (1); Aphecetche, L. (1); Appelshaeuser, H. (1); Arcelli, S. (1); Arend, A. (1); Armesto, N. (1); Arnaldi, R. (1); Aronsson, T. (1); Arsene, I. C. (1); show less...

University: Lund University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2011 (1)

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