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Observation of a Resonant Structure near the $D_{s}^{+} D_{s}^{-}$ Threshold in the $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ Decay

https://doi.org/10.1103/PhysRevLett.131.071901

Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; et al (August 2023, Physical Review Letters)

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First observation of the $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay

https://doi.org/10.1103/PhysRevD.108.034012

Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; et al (August 2023, Physical Review D)

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Measurement of the Branching Fractions $B (B^{0} \to p \bar{p} p \bar{p})$ and $B (B_{s}^{0} \to p \bar{p} p \bar{p})$

https://doi.org/10.1103/PhysRevLett.131.091901

Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; et al (August 2023, Physical Review Letters)

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First Observation of a Doubly Charged Tetraquark and Its Neutral Partner

https://doi.org/10.1103/PhysRevLett.131.041902

Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; et al (July 2023, Physical Review Letters)

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Amplitude analysis of $B^{0} \to {\bar{D}}^{0} D_{s}^{+} π^{-}$ and $B^{+} \to D^{-} D_{s}^{+} π^{+}$ decays

https://doi.org/10.1103/PhysRevD.108.012017

Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; et al (July 2023, Physical Review D)

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Search for the lepton-flavour violating decays B0 → K*0τ±μ∓

https://doi.org/10.1007/JHEP06(2023)143

Aaij, R.; Abdelmotteleb, A. S.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; et al (June 2023, Journal of High Energy Physics)

A bstract A first search for the lepton-flavour violating decays B 0 → K *0 τ ± μ ∓ is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb − 1 . No significant signal is observed, and upper limits on the branching fractions are determined to be $$ \mathcal{B}\left({B}^0\to {K}^{\ast 0}{\tau}^{+}{\mu}^{-}\right)<1.0(1.2)\times {10}^{-5} $$ B B 0 → K ∗ 0 τ + μ − < 1.0 1.2 × 10 − 5 and $$ \mathcal{B}\left({B}^0\to {K}^{\ast 0}{\tau}^{-}{\mu}^{+}\right)<8.2(9.8)\times {10}^{-6} $$ B B 0 → K ∗ 0 τ − μ + < 8.2 9.8 × 10 − 6 at the 90% (95%) confidence level.
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