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Polarizations of J/psi and psi(2S) mesons produced in p(p)over-bar collisins at root s-1.96 TeV

Abulencia A.
•
Adelman J.
•
Affolder T.
altro
Zucchelli S.
2007
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We have measured the polarizations of J/psi and psi(2S) mesons as functions of their transverse momentum p(T) when they are produced promptly in the rapidity range |y|< 0.6 with p(T)>= 5 GeV/c. The analysis is performed using a data sample with an integrated luminosity of about 800 pb(-1) collected by the CDF II detector. For both vector mesons, we find that the polarizations become increasingly longitudinal as p(T) increases from 5 to 30 GeV/c. These results are compared to the predictions of nonrelativistic quantum chromodynamics and other contemporary models. The effective polarizations of J/psi and psi(2S) mesons from B-hadron decays are also reported.
DOI
10.1103/PhysRevLett.99.132001
WOS
WOS:000249786700020
Archivio
http://hdl.handle.net/11390/879345
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34848878629
Diritti
metadata only access
Scopus© citazioni
238
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
168
Data di acquisizione
Mar 22, 2024
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