Measurement of the relative branching fraction of $\Lambda_{b}^{0} \to \Lambda_{c}^{+} \bar{D}^{(*)0} K^{-}$ and $\Lambda_{b}^{0} \to \Lambda_{c}^{+} D_{s}^{*-}$ decays


The decays $\Lambda_b^0\!\to\Lambda_c^+\overline{\mathrm{D}}^{(*)0}\mathrm{K}^-$ and $\Lambda_b^0\!\to\Lambda_c^+\mathrm{D}_s^{*-}$ are observed in proton-proton collision data at $\sqrt{s}=13\,\mathrm{Te\kern -0.1em V}$ corresponding to an integrated luminosity of $5.7\,\mathrm{fb}^{-1}$ collected with the LHCb detector. Their ratio of branching fractions with respect to $\Lambda_b^0\!\to\Lambda_c^+\mathrm{D}_s^-$ is measured to be

where the first uncertainties are statistical, the second systematic and the third for $\Lambda_b^0\!\to\Lambda_c^+\overline{\mathrm{D}}^{(*)0}\mathrm{K}^-$ decays are due to the uncertainty of the branching fractions of $\mathrm{D}_s^-\!\to\mathrm{K}^-\mathrm{K}^+\pi^-$ and $\mathrm{D}^0\!\to\mathrm{K}^+\pi^-$.

People involved


Adam Morris(2), Sebastian Neubert(1), Mindaugas Sarpis(1), Marian Stahl(2)

(1) Bonn, (2) CERN

WG review

Liupan An

Lorenzo Capriotti

Zan Ren

* Commets and answers of the first round - WG_review_round1.pdf

* Commets and answers of the second round - WG_review_round2.pdf

* Commets and answers of the third round - WG_review_round3.pdf

WG database entry


Draft versions of the Analysis Note

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf WG_review_round1.pdf r1 manage 143.3 K 2023-01-16 - 16:43 MarianStahl  
PDFpdf WG_review_round2.pdf r1 manage 67.9 K 2023-02-17 - 17:43 MarianStahl  
PDFpdf WG_review_round3.pdf r1 manage 58.1 K 2023-02-18 - 23:13 MarianStahl  
PDFpdf lcd0k_v1r0.pdf r1 manage 7619.1 K 2021-11-23 - 17:41 MarianStahl  
PDFpdf lcd0k_v1r1.pdf r1 manage 6861.0 K 2023-01-16 - 16:43 MarianStahl  
PDFpdf lcd0k_v1r2.pdf r1 manage 8317.3 K 2023-02-17 - 17:43 MarianStahl  
PDFpdf lcd0k_v1r3.pdf r1 manage 8466.7 K 2023-02-18 - 23:13 MarianStahl  
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Topic revision: r4 - 2023-02-18 - MarianStahl
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