A search for rare B → Dμ+μ− decays
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 $$ \mathcal{B}\left({B}^0\to {\overline{D}...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
07 February 2024
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| In: |
Journal of high energy physics
Year: 2024, Heft: 2, Pages: 1-22 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP02(2024)032 |
| Online-Zugang: | Resolving-System, kostenfrei, Volltext: https://doi.org/10.1007/JHEP02(2024)032 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/JHEP02(2024)032 |
| Verfasserangaben: | the LHCb collaboration |
MARC
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| 245 | 1 | 2 | |a A search for rare B → Dμ+μ− decays |c the LHCb collaboration |
| 246 | 3 | 3 | |a A search for rare B → D mu + mu − decays |
| 264 | 1 | |c 07 February 2024 | |
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| 500 | |a The LHCb collaboration: R. Aaij, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, D. Gerick, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, J. Kubat, B. Leverington, J. Marks, M.P. Morgenthaler, L. Promberger, M. Schmelling, R. Skuza, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, M. Zavertyaev, Y. Zhao, A. Zhelezov [und 1036 weitere] | ||
| 500 | |a Die Zeichen "+" und "-" im Titel sind hochgestellt | ||
| 500 | |a Gesehen am 15.10.2024 | ||
| 520 | |a A search for rare B → Dμ+μ− decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed in the non-resonant μ+μ− modes, and upper limits of $$ \mathcal{B}\left({B}^0\to {\overline{D}}^0{\mu}^{+}{\mu}^{-}\right)<5.1\times {10}^{-8} $$, $$ \mathcal{B}\left({B}^{+}\to {D}_s^{+}{\mu}^{+}{\mu}^{-}\right)<3.2\times {10}^{-8} $$, $$ \mathcal{B}\left({B}_s^0\to {\overline{D}}^0{\mu}^{+}{\mu}^{-}\right)<1.6\times {10}^{-7} $$and $$ {f}_c/{f}_u\cdotp \mathcal{B}\left({B}_c^{+}\to {D}_s^{+}{\mu}^{+}{\mu}^{-}\right)<9.6\times {10}^{-8} $$are set at the 95 % confidence level, where fc and fu are the fragmentation fractions of a B meson with a c and u quark respectively in proton-proton collisions. Each result is either the first such measurement or an improvement by three orders of magnitude on an existing limit. Separate upper limits are calculated when the muon pair originates from a J/ψ → μ+μ− decay. The branching fraction of $$ {B}_c^{+}\to {D}_s^{+}J/\psi $$multiplied by the fragmentation-fraction ratio is measured to befcfu·BBc+→Ds+J/ψ=1.63±0.15±0.13×10−5,$$ \frac{f_c}{f_u}\cdotp \mathcal{B}\left({B}_c^{+}\to {D}_s^{+}J/\psi \right)=\left(1.63\pm 0.15\pm 0.13\right)\times {10}^{-5}, $$ | ||
| 650 | 4 | |a B Physics | |
| 650 | 4 | |a Flavour Physics | |
| 650 | 4 | |a Hadron-Hadron Scattering | |
| 650 | 4 | |a Rare Decay | |
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