Polarization of prompt J/ψ at the Fermilab Tevatron

Eric Braaten, Bernd A. Kniehl, Jungil Lee

Research output: Contribution to journalArticle

202 Citations (Scopus)

Abstract

The polarization of prompt J/ψ at the Fermilab Tevatron is calculated within the nonrelativistic QCD factorization framework. The contribution from radiative decays of P-wave charmonium states decreases, but does not eliminate, the transverse polarization at large transverse momentum. The angular distribution parameter α for leptonic decays of the J/ψ is predicted to increase from near 0 at pT=5 GeV to about 0.5 at pT = 20 GeV. The prediction is consistent with measurements by the CDF Collaboration at intermediate values of pT, but disagrees by about 3 standard deviations at the largest values of pT measured.

Original languageEnglish
Article number094005
Pages (from-to)1-4
Number of pages4
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number9
Publication statusPublished - 2000 Nov 1
Externally publishedYes

Fingerprint

Transverse
Polarization
Decay
Charmonium
decay
polarization
P waves
factorization
transverse momentum
Standard deviation
standard deviation
Factorization
Eliminate
angular distribution
Momentum
quantum chromodynamics
Decrease
Prediction
predictions
Collaboration

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Polarization of prompt J/ψ at the Fermilab Tevatron. / Braaten, Eric; Kniehl, Bernd A.; Lee, Jungil.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 62, No. 9, 094005, 01.11.2000, p. 1-4.

Research output: Contribution to journalArticle

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