Measurement of Bc (2S)+ and Bc∗ (2S)+ cross section ratios in proton-proton collisions at s =13 TeV

10Citations
Citations of this article
24Readers
Mendeley users who have this article in their library.

Abstract

The ratios of the Bc(2S)+ to Bc+, Bc∗(2S)+ to Bc+, and Bc∗(2S)+ to Bc(2S)+ production cross sections are measured in proton-proton collisions at s=13 TeV, using a data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 143 fb-1. The three measurements are made in the Bc+ meson phase space region defined by the transverse momentum pT>15 GeV and absolute rapidity |y|<2.4, with the excited Bc(∗)(2S)+ states reconstructed through the Bc(∗)+π+π-, followed by the Bc+→J/ψπ+ and J/ψ→μ+μ- decays. The Bc(2S)+ to Bc+, Bc∗(2S)+ to Bc+, and Bc∗(2S)+ to Bc(2S)+ cross section ratios, including the unknown Bc(∗)(2S)+→Bc(∗)+π+π- branching fractions, are (3.47±0.63(stat)±0.33(syst))%, (4.69±0.71(stat)±0.56(syst))%, and 1.35±0.32(stat)±0.09(syst), respectively. None of these ratios shows a significant dependence on the pT or |y| of the Bc+ meson. The normalized dipion invariant mass distributions from the decays Bc(∗)(2S)+→Bc(∗)+π+π- are also reported.

Cite

CITATION STYLE

APA

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Arnold, B., Bergauer, H., … Vetens, W. (2020). Measurement of Bc (2S)+ and Bc∗ (2S)+ cross section ratios in proton-proton collisions at s =13 TeV. Physical Review D, 102(9). https://doi.org/10.1103/PhysRevD.102.092007

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free