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Production of K0S,K∗±(892) and φ0(1020) in minimum bias events and K0S and Λ0 in jets in pp ̄ collisions at √s=1.96 TeV

Aaltonen T.
•
Amerio S.
•
Amidei D.
altro
Zucchelli S.
2013
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We report measurements of the inclusive transverse momentum (pT) distribution of centrally produced K0S, K⋆±(892), and φ0(1020) mesons up to pT=10 GeV/c in minimum bias events, and K0S and Λ0 particles up to pT=20 GeV/c in jets with transverse energy between 25 and 160 GeV in pp ̄ collisions. The data were taken with the CDF II detector at the Fermilab Tevatron at √s=1.96 TeV. We find that as pT increases, the pT slopes of the three mesons (K0S, K⋆±, and φ) are similar. And using our previous Λ0 results from minimum bias events, we show that the ratio of Λ0 to K0S as a function of pT in minimum bias events becomes similar to the fairly constant ratio in jets at pT∼5 GeV/c. This suggests that the particles with pT≳5 GeV/c in minimum bias events are from “soft” jets, and that the pT slope of particles in jets is insensitive to light quark flavor (u, d, or s) and to the number of valence quarks. We also find that for pT≲4 GeV relatively more Λ0 baryons are produced in minimum bias events than in jets.
DOI
10.1103/PhysRevD.88.092005
WOS
WOS:000327387600002
Archivio
http://hdl.handle.net/11390/984147
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84890253921
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Scopus© citazioni
4
Data di acquisizione
Jun 14, 2022
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Web of Science© citazioni
4
Data di acquisizione
Mar 27, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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