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    Measurement of branching fraction ratios for B+ → D*+D−K+, B+ → D*−D+K+, and B0 → D*−D0K+ decays

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    A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The measured branching-fraction ratios areB(B+→D∗+D−K+)B(B+→D ̄0D0K+)=0.517±0.015±0.013±0.011,B(B+→D∗−D+K+)B(B+→D ̄0D0K+)=0.577±0.016±0.013±0.013,B(B0→D∗−D0K+)B(B0→D−D0K+)=1.754±0.028±0.016±0.035,B(B+→D∗+D−K+)B(B+→D∗−D+K+)=0.907±0.033±0.014, where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date. [Figure not available: see fulltext.
    AIR Universita degli studi di Milano
    Archivio della Ricerca - Università di Pisa
    Archivio istituzionale della ricerca - Università di Cagliari
    ePubs: the open archive for STFC research publications
    Archivio istituzionale della ricerca - Università di Ferrara
    ART
    Archivio istituzionale della ricerca - Università di Genova
    Archivio istituzionale della ricerca - Università di Modena e Reggio Emilia

    Measurement of branching fraction ratios for B+ → D*+D−K+, B+ → D*−D+K+, and B0 → D*−D0K+ decays

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    A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1 . The measured branching-fraction ratios are B(B+ → D∗+D−K+) B(B+ → D¯ 0D0K+) = 0.517 ± 0.015 ± 0.013 ± 0.011 , B(B+ → D∗−D+K+) B(B+ → D¯ 0D0K+) = 0.577 ± 0.016 ± 0.013 ± 0.013 , B(B0 → D∗−D0K+) B(B0 → D−D0K+) = 1.754 ± 0.028 ± 0.016 ± 0.035 , B(B+ → D∗+D−K+) B(B+ → D∗−D+K+) = 0.907 ± 0.033 ± 0.014 , where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date
    Infoscience - École polytechnique fédérale de Lausanne
    University of Liverpool Repository
    Archivio istituzionale della Ricerca - Scuola Normale Superiore
    Archivio istituzionale della ricerca - Università di Bari
    Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna
    Enlighten
    Apollo (Cambridge)
    Archivio della ricerca- Università di Roma La Sapienza
    MPG.PuRe

    First observation of the Λ0 b → D+D−Λ decay

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     The Λ 0 b → D+D−Λ decay is observed for the frst time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.3 fb−1 . Using the B0 → D+D−K0 S decay as a reference channel, the product of the relative production cross-section and decay branching fractions is measured to be R = σΛ0 b σB0 × B(Λ0 b → D+D−Λ) B(B0 → D+D−K0 S ) = 0.179 ± 0.022 ± 0.014 , where the frst uncertainty is statistical and the second is systematic. The known branching fraction of the reference channel, B(B0 → D+D−K0 S ), and the cross-section ratio, σΛ0 b /σB0 , previously measured by LHCb are used to derive the branching fraction of the Λ 0 b → D+D−Λ decay B(Λ0 b → D+D−Λ) = (1.24 ± 0.15 ± 0.10 ± 0.28 ± 0.11) × 10−4 , where the third and fourth contributions are due to uncertainties of B(B0 → D+D−K0 S ) and σΛ0 b /σB0 , respectively. Inspection of the D+Λ and D+D− invariant-mass distributions suggests a rich presence of intermediate resonances in the decay. The Λ 0 b → D∗+D−Λ decay is also observed for the frst time as a partially reconstructed component in the D+D−Λ invariant mass spectrum.
    Diposit Digital de la Universitat de Barcelona

    Measurement of branching fraction ratios for B + → D *+ D − K +, B + → D *− D + K +, and B 0 → D *− D 0 K + decays

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    A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The measured branching-fraction ratios are B(B+→D∗+D−K+)B(B+→D¯¯¯¯¯0D0K+)=0.517±0.015±0.013±0.011,B(B+→D∗−D+K+)B(B+→D¯¯¯¯¯0D0K+)=0.577±0.016±0.013±0.013,B(B0→D∗−D0K+)B(B0→D−D0K+)=1.754±0.028±0.016±0.035,B(B+→D∗+D−K+)B(B+→D∗−D+K+)=0.907±0.033±0.014,where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date
    Diposit Digital de la Universitat de Barcelona

    Measurement of branching fraction ratios for B + → D *+ D − K +, B + → D *− D + K +, and B 0 → D *− D 0 K + decays

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      A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The measured branching-fraction ratios areB(B+→D∗+D−K+)B(B+→D¯0D0K+)=0.517±0.015±0.013±0.011,B(B+→D∗−D+K+)B(B+→D¯0D0K+)=0.577±0.016±0.013±0.013,B(B0→D∗−D0K+)B(B0→D−D0K+)=1.754±0.028±0.016±0.035,B(B+→D∗+D−K+)B(B+→D∗−D+K+)=0.907±0.033±0.014, where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date. [Figure not available: see fulltext.

      Measurement of branching fraction ratios for B+ → D*+D−K+, B+ → D*−D+K+, and B0 → D*−D0K+ decays

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      For a complete list of authors, please look at article.Abstract A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The measured branching-fraction ratios are B B + → D ∗ + D − K + B B + → D ¯ 0 D 0 K + = 0.517 ± 0.015 ± 0.013 ± 0.011 , B B + → D ∗ − D + K + B B + → D ¯ 0 D 0 K + = 0.577 ± 0.016 ± 0.013 ± 0.013 , B B 0 → D ∗ − D 0 K + B B 0 → D − D 0 K + = 1.754 ± 0.028 ± 0.016 ± 0.035 , B B + → D ∗ + D − K + B B + → D ∗ − D + K + = 0.907 ± 0.033 ± 0.014 , B(B+→D∗+D−K+)B(B+→D‾0D0K+)=0.517±0.015±0.013±0.011,B(B+→D∗−D+K+)B(B+→D‾0D0K+)=0.577±0.016±0.013±0.013,B(B0→D∗−D0K+)B(B0→D−D0K+)=1.754±0.028±0.016±0.035,B(B+→D∗+D−K+)B(B+→D∗−D+K+)=0.907±0.033±0.014, {\displaystyle \begin{array}{c}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast +}{D}^{-}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {\overline{D}}^0{D}^0{K}^{+}\right)}=0.517\pm 0.015\pm 0.013\pm 0.011,\\ {}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast -}{D}^{+}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {\overline{D}}^0{D}^0{K}^{+}\right)}=0.577\pm 0.016\pm 0.013\pm 0.013,\\ {}\begin{array}{c}\frac{\mathcal{B}\left({B}^0\to {D}^{\ast -}{D}^0{K}^{+}\right)}{\mathcal{B}\left({B}^0\to {D}^{-}{D}^0{K}^{+}\right)}=1.754\pm 0.028\pm 0.016\pm 0.035,\\ {}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast +}{D}^{-}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {D}^{\ast -}{D}^{+}{K}^{+}\right)}=0.907\pm 0.033\pm 0.014,\end{array}\end{array}} where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date.http://deepblue.lib.umich.edu/bitstream/2027.42/173305/1/13130_2020_Article_14428.pd
      Deep Blue Documents

      Measurement of branching fraction ratios for B+ → D*+D−K+, B+ → D*−D+K+, and B0 → D*−D0K+ decays

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      Abstract A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The measured branching-fraction ratios are B B + → D ∗ + D − K + B B + → D ¯ 0 D 0 K + = 0.517 ± 0.015 ± 0.013 ± 0.011 , B B + → D ∗ − D + K + B B + → D ¯ 0 D 0 K + = 0.577 ± 0.016 ± 0.013 ± 0.013 , B B 0 → D ∗ − D 0 K + B B 0 → D − D 0 K + = 1.754 ± 0.028 ± 0.016 ± 0.035 , B B + → D ∗ + D − K + B B + → D ∗ − D + K + = 0.907 ± 0.033 ± 0.014 , B(B+→D∗+D−K+)B(B+→D‾0D0K+)=0.517±0.015±0.013±0.011,B(B+→D∗−D+K+)B(B+→D‾0D0K+)=0.577±0.016±0.013±0.013,B(B0→D∗−D0K+)B(B0→D−D0K+)=1.754±0.028±0.016±0.035,B(B+→D∗+D−K+)B(B+→D∗−D+K+)=0.907±0.033±0.014, {\displaystyle \begin{array}{c}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast +}{D}^{-}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {\overline{D}}^0{D}^0{K}^{+}\right)}=0.517\pm 0.015\pm 0.013\pm 0.011,\\ {}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast -}{D}^{+}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {\overline{D}}^0{D}^0{K}^{+}\right)}=0.577\pm 0.016\pm 0.013\pm 0.013,\\ {}\begin{array}{c}\frac{\mathcal{B}\left({B}^0\to {D}^{\ast -}{D}^0{K}^{+}\right)}{\mathcal{B}\left({B}^0\to {D}^{-}{D}^0{K}^{+}\right)}=1.754\pm 0.028\pm 0.016\pm 0.035,\\ {}\frac{\mathcal{B}\left({B}^{+}\to {D}^{\ast +}{D}^{-}{K}^{+}\right)}{\mathcal{B}\left({B}^{+}\to {D}^{\ast -}{D}^{+}{K}^{+}\right)}=0.907\pm 0.033\pm 0.014,\end{array}\end{array}} where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the D-meson branching fractions. These are the most accurate measurements of these ratios to date
      DSpace@MIT

      Author Instructions

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      Crossref
      Cartographic Perspectives (E-Journal - North American Cartographic Information Society, NACIS)

      Amplitude analysis and branching fraction measurement of B+ → D*-D+sπ+ decays

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      The decays of the B+ meson to the final state D∗−D+ s π + are studied in proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 . The ratio of branching fractions of the B+ → D∗−D+ s π + and B0 → D∗−D+ s decays is measured to be 0.173 ± 0.006 ± 0.010, where the first uncertainty is statistical and the second is systematic. Using partially reconstructed D∗+ s → D+ s γ and D+ s π 0 decays, the ratio of branching fractions between the B+ → D∗−D∗+ s π + and B+ → D∗−D+ s π + decays is determined as 1.31 ± 0.07 ± 0.14. An amplitude analysis of the B+ → D∗−D+ s π + decay is performed for the first time, revealing dominant contributions from known excited charm resonances decaying to the D∗−π + final state. No significant evidence of exotic contributions in the D+ s π + or D∗−D+ s channels is found. The fit fraction of the scalar state T ∗ cs¯0 (2900)++ observed in the B+ → D−D+ s π + decay is determined to be less than 2.3% at a 90% confidence level
      arXiv.org e-Print Archive
      Infoscience - École polytechnique fédérale de Lausanne
      University of Liverpool Repository
      AIR Universita degli studi di Milano
      Directory of Open Access Journals
      Archivio istituzionale della Ricerca - Scuola Normale Superiore
      Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna
      Enlighten
      Archivio istituzionale della ricerca - Università di Ferrara
      Archivio istituzionale della ricerca - Università di Genova
      MPG.PuRe

      Amplitude analysis and branching fraction measurement of B+ → D∗−D+ s π + decays

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      The decays of the B+ meson to the fnal state D∗−D+ s π + are studied in protonproton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 . The ratio of branching fractions of the B+ → D∗−D+ s π + and B0 → D∗−D+ s decays is measured to be 0.173 ± 0.006 ± 0.010, where the frst uncertainty is statistical and the second is systematic. Using partially reconstructed D∗+ s → D+ s γ and D+ s π 0 decays, the ratio of branching fractions between the B+ → D∗−D∗+ s π + and B+ → D∗−D+ s π + decays is determined as 1.31 ± 0.07 ± 0.14. An amplitude analysis of the B+ → D∗−D+ s π + decay is performed for the frst time, revealing dominant contributions from known excited charm resonances decaying to the D∗−π + fnal state. No signifcant evidence of exotic contributions in the D+ s π + or D∗−D+ s channels is found. The ft fraction of the scalar state T ∗ cs¯0 (2900)++ observed in the B+ → D−D+ s π + decay is determined to be less than 2.3% at a 90% confdence level
      Diposit Digital de la Universitat de Barcelona
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