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Strange particle production in proton–proton collisions at s=09 with ALICE at the LHC The ALICE Collaboration

The ALICE Collaboration; Aamodt, K.; Quintana, A. Abrahantes; Adamová, D.; Adare, A.M.; Richter, Matthias
Peer reviewed, Journal article
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https://hdl.handle.net/1956/5258
Utgivelsesdato
2011-03-30
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  • Department of Physics and Technology [1343]
Originalversjon
https://doi.org/10.1140/epjc/s10052-011-1594-5
Sammendrag
The production of mesons containing strange quarks (, φ) and both singly and doubly strange baryons (, , and ) are measured at mid-rapidity in pp collisions at 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 and 0.021±0.004(stat.)±0.003(syst.) for φ. For baryons, we find ⟨dN/dy⟩=0.048±0.001(stat.)±0.004(syst.) for , 0.047±0.002(stat.)±0.005(syst.) for and 0.0101±0.0020(stat.)±0.0009(syst.) for . 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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There are approximately 750 authors. Only a few of them have been given author entries in addition to the Collaboration.
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Springer
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©The Author(s) 2011

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