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arXiv · hep-ph/0212088

Diffractive heavy pseudoscalar-meson productions by weak neutral currents

A. Hayashigaki·K. Suzuki·K. Tanaka
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Abstract

A first theoretical study for neutrino-induced diffractive productions of heavy pseudoscalar-mesons, η_c and η_b, off a nucleon is performed based on factorization formalism in QCD. We evaluate the forward diffractive production cross section in perturbative QCD in terms of the light-cone wave functions of Z boson and η_{c,b} mesons, and the gluon distribution of the nucleon. The diffractive production of η_c is governed by the axial vector coupling of the longitudinally polarized Z boson to Q\bar{Q} pair, and the resulting η_c production cross section is larger than the J/ψone by one order of magnitude. The bottomonium η_b production, which shows up for higher beam energy, is also discussed.

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A. Hayashigaki, K. Suzuki, K. Tanaka. 2002-12-05. Diffractive heavy pseudoscalar-meson productions by weak neutral currents. https://doi.org/10.1063/1.1607199

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