Role of the QCD-induced gluon-gluon coupling to gauge-boson pairs in the multi-TeV region

Ll. Ametller; E. Gava; N. Paver; D. Treleani

doi:10.1103/PhysRevD.32.1699

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Role of the QCD-induced gluon-gluon coupling to gauge-boson pairs in the multi-TeV region

Ll. Ametller

E. Gava

N. Paver and D. Treleani

International Centre for Theoretical Physics, Trieste, Italy

Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Trieste, Italy

Dipartimento di Fisica Teorica, Università di Trieste, Trieste, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Trieste, Italy

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Phys. Rev. D 32, 1699 – Published 1 October, 1985

DOI: https://doi.org/10.1103/PhysRevD.32.1699

Abstract

We discuss the production of γγ and $Z^{0}$ γ pairs induced by the gluon-gluon fusion mechanism at typical supercollider energies. Due to the large flux of gluons with small fractional momenta, it is found that in certain kinematical configurations this subprocess, although of order ( $α_{s}$ /π $)^{2}$ with respect to the leading quark annihilation, can give an appreciable contribution to the cross section for $Z^{0}$ γ production and even a larger one for the γγ production.

References (7)

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[c1] E. Eichten, I. Hinchliffe, K. Lane and C. Quigg, Rev. Mod. Phys. 56, 579 (1984).

[c2] For a recent discussion see, e.g., Ref. 1 and G. Altarelli, R. K. Ellis and G. Martinelli, Z. Phys. C 27, 617 (1985).

[c3] R. Karplus and M. Neuman, Phys. Rev. 80, 380 (1950); Y. Shima, 142, 944 (1966).

[c4] V. Constantini, B. De Tollis and G. Pistoni, Nuovo Cimento 2A, 733 (1971).

[c5] E. L. Berger, E. Braaten and R. D. Field, Nucl. Phys. B239, 52 (1984); B. L. Combridge, ibid. B174, 243 (1980); C. Carimalo, M. Crozon, P. Kessler and J. Parisi, Phys. Lett. 98B, 105 (1981).

[c6] (a) R. N. Cahn and J. F. Gunion, Phys. Rev. D 20, 2253 (1979); (b) M. L. Laursen, M. A. Samuel, G. B. Tupper and A. Sen, ibid. 27, 196 (1983).

[c7] (a) M. Glük, E. Hoffmann and E. Reya, Z. Phys. C 13, 119 (1982); (b) D. W. Duke and J. F. Owens, Phys. Rev. D 30, 49 (1984).

Physical Review D

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Role of the QCD-induced gluon-gluon coupling to gauge-boson pairs in the multi-TeV region

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