Measurement of; ; B; ; meson production fraction ratios in proton-proton collisions at; ; ; ; ; s; ; ; =; 13;  ;  ; TeV; ; ; using open-charm and charmonium decays Journal Article uri icon

Overview

abstract

  • ; Production fraction ratios of; ; ; B; +; ; ; ,; ; ; B; 0; ; ; , and; ; ; B; s; 0; ; ; mesons are measured in proton-proton collisions at; ; ; ; ; s; ; ; =; 13;  ;  ; TeV; ; ; using a special dataset recorded in 2018 with high-rate triggers designed to collect an unbiased sample of; ; 1; ; 0; 10; ; ; ; b; ; hadrons with the CMS experiment at the LHC. These data allow the study of the open-charm decays of; ; B; ; mesons (; ; ; B; ; (; s; ); ; ; →; π; ; D; ; (; s; ); ; ; ; ) where the; ; D; ; meson decays into fully hadronic final states. By utilizing known branching fractions and precise theoretical calculations, production fraction ratios as functions of; ; B; ; meson transverse momentum; ; ; (; ; ; p; ; ; T; ; ; ); ; ; and rapidity (; ; y; ; ) are measured using open-charm decays in the kinematic range of; ; ; 8; <; ; ; p; ; ; T; ; ; <; 60;  ;  ; ; GeV; ; ; ; and; ; ; -; y; -; ; <; 2.25; ; . In addition, the same dataset is used to measure the relative production fraction ratios with the charmonium decay channels [; ; ; B; ; (; s; ); ; ; →; X; ; J; /; ψ; ; ; with; ; X; ; indicating a; ; ; K; +; ; ; ,; ; ; ; ; ; K; ; ; *; ; ; (; 892; ; ; ; ); ; ; 0; ; ; ; ; , or; ; ϕ; (; 1020; ); ; meson] where the; ; J; /; ψ; ; meson decays into a pair of muons. The open-charm results are used to normalize the relative production fraction ratios obtained from the charmonium samples. Measurements of the ratios of branching fractions of; ; B; ; meson decays to charmonium and open-charm final states are also reported, which will improve the world-average values of these ratios. Finally, we test isospin invariance in; ; B; ; meson production in proton-proton collisions and observe that it holds within the experimental precision.;

publication date

  • July 6, 2026

Date in CU Experts

  • July 8, 2026 3:32 AM

Full Author List

  • Hayrapetyan A; Makarenko V; Tumasyan A; Adam W; Andrejkovic JW; Benato L; Bergauer T; Dragicevic M; Giordano C; Hussain PS

author count

  • 2431

Other Profiles

International Standard Serial Number (ISSN)

  • 2470-0010

Electronic International Standard Serial Number (EISSN)

  • 2470-0029

Additional Document Info

volume

  • 114

issue

  • 1

number

  • 012005