Measurement of the $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S) differential cross sections in pp collisions at $\sqrt{s}$ = 13.6 TeV

TL;DR

This paper reports on the measurement of differential production cross sections of the $$ mesons in proton-proton collisions at 13.6 TeV, providing detailed data across various transverse momentum and rapidity ranges.

Contribution

It presents the first detailed differential cross section measurements of $$(1S), $$(2S), and $$(3S) mesons at 13.6 TeV in specific kinematic regions.

Findings

Differential cross sections measured in the 20-200 GeV transverse momentum range.

Results are provided for two rapidity intervals, |y|<0.6 and 0.6<|y|<1.2.

Data can be used to test QCD models of quarkonium production.

Abstract

The production cross sections of the $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S) mesons are measured in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV, using a data sample collected in 2022 by the CMS experiment and corresponding to an integrated luminosity of 37.4 fb$^{-1}$. The measurement is performed in the $\mu^+\mu^-$ decay channels, differentially as a function of transverse momentum in the 20$-$200 GeV range, in the $\lvert y\rvert$ $\lt$ 0.6 and 0.6 $\lt$ $\lvert y\rvert$ $\lt$ 1.2 rapidity intervals.