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
Published version
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https://hdl.handle.net/1956/5258Utgivelsesdato
2011-03-30Metadata
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Originalversjon
https://doi.org/10.1140/epjc/s10052-011-1594-5Sammendrag
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.
Beskrivelse
There are approximately 750 authors. Only a few of them have been given author entries in addition to the Collaboration.