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Measurement of $B$ meson production fraction ratios in proton-proton collisions at $\sqrt{s}$ = 13 TeV using open-charm and charmonium decays

CMS Collaboration; Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Benato, L.; Bergauer, T.; Dragicevic, M.; Giordano, C.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; ... mehr

Abstract:

Production fraction ratios of 𝐵$^+$, 𝐵$^0$, and 𝐵$^0_𝑠$ 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⁢010 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. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000198044
Veröffentlicht am 16.10.2026
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Scientific Computing Center (SCC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2026
Sprache Englisch
Identifikator ISSN: 2470-0010, 2470-0029
KITopen-ID: 1000198044
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 114
Heft 1
Seiten Art.Nr: 012005
Vorab online veröffentlicht am 06.07.2026
Nachgewiesen in Scopus
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