Work

Towards a Solution of the Charmonium Production Controversy: k⊥ Factorization versus Color-Octet Mechanism

Year: 2001

Type: article

Abstract: The cross section of chi(cJ) hadroproduction is calculated in the k( perpendicular)-factorization approach. We find a significant contribution of the chi(c1) state due to non-applicability of the Landau-Yang theorem because of off-shell gluons. The results are in agreement with data and, in contrast to the collinear factorization, show a dominance of the color-singlet part and a strong suppression of the color octet contribution. Our results could therefore lead to a solution of the long-standing controversy between the color-singlet model and the color-octet mechanism.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.86.1446

Authors: Ph. Hägler, R. Kirschner, A. Schäfer, L. Szymanowski, O. V. Teryaev

Institutions: University of Regensburg, Leipzig University, École Polytechnique, Joint Institute for Nuclear Research, Centre de Physique Théorique

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2056978031

FWCI: 4.207

Cites: 22

Cited by: 96

Related to: 10