# Diffractive heavy pseudoscalar-meson productions by weak neutral currents

Source: [Diffractive heavy pseudoscalar-meson productions by weak neutral currents](<https://www.sota2.com/research/paper/68fa25d82c2a3760193b4530>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T11:00:39.335Z

Authors: A. Hayashigaki, K. Suzuki, K. Tanaka

Published: 2002-12-05T18:13:16.000Z

## Abstract

A first theoretical study for neutrino-induced diffractive productions of heavy pseudoscalar-mesons, \\eta\_c and \\eta\_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 \\eta\_{c,b} mesons, and the gluon distribution of the nucleon. The diffractive production of \\eta\_c is governed by the axial vector coupling of the longitudinally polarized Z boson to Q\\bar{Q} pair, and the resulting \\eta\_c production cross section is larger than the J/\\psi one by one order of magnitude. The bottomonium \\eta\_b production, which shows up for higher beam energy, is also discussed.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/hep-ph/0212088>)

[PDF](<https://arxiv.org/pdf/hep-ph/0212088.pdf>)