Polarization of prompt J/ψ at the Fermilab Tevatron

Eric Braaten; Bernd A. Kniehl; Jungil Lee

doi:10.1103/PhysRevD.62.094005

Polarization of prompt J/ψ at the Fermilab Tevatron

Eric Braaten, Bernd A. Kniehl, Jungil Lee

Research output: Contribution to journal › Article › peer-review

83 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 p_T=5 GeV to about 0.5 at p_T = 20 GeV. The prediction is consistent with measurements by the CDF Collaboration at intermediate values of p_T, but disagrees by about 3 standard deviations at the largest values of p_T measured.

Original language	English
Article number	094005
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	62
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.62.094005
Publication status	Published - 2000 Nov 1
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.62.094005

Cite this

@article{6b891c8c79864de99131bc4d33017f91,

title = "Polarization of prompt J/ψ at the Fermilab Tevatron",

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.",

author = "Eric Braaten and Kniehl, {Bernd A.} and Jungil Lee",

year = "2000",

month = nov,

day = "1",

doi = "10.1103/PhysRevD.62.094005",

language = "English",

volume = "62",

pages = "1--4",

journal = "Physical review D: Particles and fields",

issn = "0556-2821",

publisher = "American Institute of Physics Publising LLC",

number = "9",

}

TY - JOUR

T1 - Polarization of prompt J/ψ at the Fermilab Tevatron

AU - Braaten, Eric

AU - Kniehl, Bernd A.

AU - Lee, Jungil

PY - 2000/11/1

Y1 - 2000/11/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=17044391809&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.62.094005

DO - 10.1103/PhysRevD.62.094005

M3 - Article

AN - SCOPUS:17044391809

SN - 0556-2821

VL - 62

SP - 1

EP - 4

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

IS - 9

M1 - 094005

ER -

Polarization of prompt J/ψ at the Fermilab Tevatron

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this