A search for rare B → Dμ+μ− decays

Brundu, D.;Contu, A.;Dettori, F.;Dordei, F.;Fabiano, F.;Litvinov, R.;Manca, G.;Oldeman, R.;Saitta, B.;Sun, J.;
2024-01-01

Abstract

A search for rare B → Dμ+μ− decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed in the non-resonant μ+μ− modes, and upper limits of BB0→D¯0μ+μ−<5.1×10−8, BB+→Ds+μ+μ−<3.2×10−8, BBs0→D¯0μ+μ−<1.6×10−7 and fc/fu·BBc+→Ds+μ+μ−<9.6×10−8 are set at the 95 % confidence level, where fc and fu are the fragmentation fractions of a B meson with a c and u quark respectively in proton-proton collisions. Each result is either the first such measurement or an improvement by three orders of magnitude on an existing limit. Separate upper limits are calculated when the muon pair originates from a J/ψ → μ+μ− decay. The branching fraction of Bc+→Ds+J/ψ multiplied by the fragmentation-fraction ratio is measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.
2024
Inglese
2024
2
32
23
https://link.springer.com/article/10.1007/JHEP02(2024)032
Comitato scientifico
internazionale
scientifica
B Physics; Flavour Physics; Hadron-Hadron Scattering; Rare Decay
Null, Null; Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1063
open
Files in This Item:
File Size Format  
JHEP02(2024)032.pdf

open access

Description: Articolo principale
Type: versione editoriale
Size 943.35 kB
Format Adobe PDF
943.35 kB Adobe PDF View/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Questionnaire and social

Share on:
Impostazioni cookie