Comprehensive studies of ${\rm Y}$ inclusive production in $Z$ boson decay

Abstract

In this paper, we present a comprehensive study of ${\rm Y}$ inclusive production in $Z$ boson decay, including the first complete next-to-leading-order calculations of the color-octet (CO) contributions. With the inclusion of the newly-calculated remarkable QCD corrections, the CO processes exhibit crucially phenomenological influence on the existing predictions built on the color-singlet mechanism. We also include the exhaustive evaluations of the feed-down contributions, which remained ignored in the literature, and find them to be considerable. Summing up all the contributions, the ${\mathcal{B}}_{Z\to {\rm Y}(nS)+X}$ still notably undershoot the data released by the L3 Collaboration.

17 pages, 6 figures, and 4 tables; accepted for publication in JHEP

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Cited by in corpus (4)

• Rare and exclusive few-body decays of the Higgs, Z, W bosons, and the top quark
• Analysis of double-$J/\psi$ production in $Z$ decay at next-to-leading-order QCD accuracy
• Next-to-leading order QCD corrections to $Z\to {\eta }_Q+Q+\bar{Q}$
• Impact of $Z\to {\eta }_{c,b}+g+g$ on the inclusive ${\eta }_{c,b}$ meson yield in $Z$-boson decay