ScholarLens Back to search
2000•Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fieldsRequires access

Measurement of B→Ds(*)+D*(*) branching fractions

S. Ahmed, M. S. Alam, S. B. Athar, L. Jian, L. Ling, M. Saleem, S. Timm, F. Wappler, A. Anastassov, J. E. Duboscq, E. A. Eckhart, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. K. Pedlar, H. Schwarthoff, J. P. Thayer, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, S. Chen, J. Fast, J. W. Hinson, J. Lee, D. W. Miller, E. I. Shibata, I. P. J. Shipsey, V. Pavlunin, D. Cronin-Hennessy, A. L. Lyon, E. H. Thorndike, C. P. Jessop, H. Marsiske, M. Perl, V. Savinov, Xiang Zhou, T. E. Coan, V. Fadeyev, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, T. Wlodek, M. Artuso, R. Ayad, C. Boulahouache, K. Bukin, E. Dambasuren, S. Karamov, D. Majumder, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, G. H. A. Viehhauser, J. Wang, A. Wolf, J. Wu, S. Köpp, A. H. Mahmood, S. E. Csorna, I. Dankó, K. W. McLean, S. Márka, Z. Xu, R. Godang, K. Kinoshita, I. C. Lai, S. Schrenk, G. Bonvicini, D. Cinabro, S. McGee, L. P. Perera, G. J. Zhou, E. Lipeles, S. P. Pappas, M. Śchmidtler, A. Shapiro, W. Sun, A. J. Weinstein, F. Würthwein, D. E. Jaffe, G. Masek, H. P. Paar, E. M. Potter, S. Prell, V. Sharma, D. M. Asner, A. Eppich, Trevor Hill, R. J. Morrison, H. N. Nelson, J. Richman, M. S. Witherell, R. A. Briere, G. Chen, B. H. Behrens, W. T. Ford, A. V. Gritsan, J. Roy, J. G. Smith, J. Alexander, R. Baker, C. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, M. Dickson, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Foland, P. Gaidarev, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, C. D. Jones, D. L. Kreinick, M. Lohner, A. Magerkurth, T. I. Meyer, N. B. Mistry, E. Nordberg, J. Patterson, D. Peterson, D. Riley, J. P. Thayer, D. Urner, B. Valant-Spaight, A. Warburton, P. Avery, C. Prescott, A. I. Rubiera, J. Yelton, J. P. Zheng, G. Brandenburg, A. Ershov, Y. Gao, D. Kim, R. Wilson, T. E. Browder, Y. Li, J. L. Rodriguez, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, C. Plager, C. Sedlack, M. Selen, J. Thaler, J. S. Williams, K. W. Edwards, R. Janicek, P. M. Patel, A. J. Sadoff, R. Ammar, A. Bean, D. Besson, R. Davis, N. Kwak, X. Zhao, S. Anderson, V. Frolov, Y. Kubota, Soohyung Lee, R. Mahapatra, J. Robert O’Neill, R. Poling, T. Riehle, A. Smith, C. Stepaniak, J. Urheim

Open publisher page 15 citations

Abstract

This article describes improved measurements by CLEO of the ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}$ branching fractions, and first evidence for the decay ${B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0},$ where ${D}^{**0}$ represents the sum of the ${D}_{1}{(2420)}^{0},$ ${D}_{2}^{*}{(2460)}^{0},$ and ${D}_{1}{(j=1/2)}^{0}L=1$ charm meson states. Also reported is the first measurement of the ${D}_{s}^{*+}$ polarization in the decay ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}.$ A partial reconstruction technique, employing only the fully reconstructed ${D}_{s}^{+}$ and slow pion ${\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ from the ${D}^{*\ensuremath{-}}\ensuremath{\rightarrow}{D}^{0}{\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ decay, enhances sensitivity. The observed branching fractions are $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}})=(1.10\ifmmode\pm\else\textpm\fi{}0.18\ifmmode\pm\else\textpm\fi{}0.10\ifmmode\pm\else\textpm\fi{}0.28)%,$ $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}})=(1.82\ifmmode\pm\else\textpm\fi{}0.37\ifmmode\pm\else\textpm\fi{}0.24\ifmmode\pm\else\textpm\fi{}0.46)%$, and $\mathcal{B}{(B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0})=(2.73\ifmmode\pm\else\textpm\fi{}0.78\ifmmode\pm\else\textpm\fi{}0.48\ifmmode\pm\else\textpm\fi{}0.68)%,$ where the first error is statistical, the second systematic, and the third is the uncertainty in the ${D}_{s}^{+}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+}$ branching fraction. The measured ${D}_{s}^{*+}$ longitudinal polarization, ${\ensuremath{\Gamma}}_{L}/\ensuremath{\Gamma}=(50.6\ifmmode\pm\else\textpm\fi{}13.9\ifmmode\pm\else\textpm\fi{}3.6)%,$ is consistent with the factorization prediction of 54%.

About this research paper

What this paper is about

This article describes improved measurements by CLEO of the ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}$ branching fractions, and first evidence for the decay ${B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0},$ where ${D}^{**0}$ represents the sum of the ${D}_{1}{(2420)}^{0},$ ${D}_{2}^{*}{(2460)}^{0},$ and ${D}_{1}{(j=1/2)}^{0}L=1$ charm meson states. Also reported is the first measurement of the ${D}_{s}^{*+}$ polarization in the decay ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}.$ A partial reconstruction technique, employing only the fully reconstructed ${D}_{s}^{+}$ and slow pion ${\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ from the ${D}^{*\ensuremath{-}}\ensuremath{\rightarrow}{D}^{0}{\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ decay, enhances sensitivity. The observed branching fractions are $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}})=(1.10\ifmmode\pm\else\textpm\fi{}0.18\ifmmode\pm\else\textpm\fi{}0.10\ifmmode\pm\else\textpm\fi{}0.28)%,$ $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}})=(1.82\ifmmode\pm\else\textpm\fi{}0.37\ifmmode\pm\else\textpm\fi{}0.24\ifmmode\pm\else\textpm\fi{}0.46)%$, and $\mathcal{B}{(B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0})=(2.73\ifmmode\pm\else\textpm\fi{}0.78\ifmmode\pm\else\textpm\fi{}0.48\ifmmode\pm\else\textpm\fi{}0.68)%,$ where the first error is statistical, the second systematic, and the third is the uncertainty in the ${D}_{s}^{+}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+}$ branching fraction. The measured ${D}_{s}^{*+}$ longitudinal polarization, ${\ensuremath{\Gamma}}_{L}/\ensuremath{\Gamma}=(50.6\ifmmode\pm\else\textpm\fi{}13.9\ifmmode\pm\else\textpm\fi{}3.6)%,$ is consistent with the factorization prediction of 54%.

Why it matters

OpenAlex reports 15 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

This article describes improved measurements by CLEO of the ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}$ branching fractions, and first evidence for the decay ${B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0},$ where ${D}^{**0}$ represents the sum of the ${D}_{1}{(2420)}^{0},$ ${D}_{2}^{*}{(2460)}^{0},$ and ${D}_{1}{(j=1/2)}^{0}L=1$ charm meson states. Also reported is the first measurement of the ${D}_{s}^{*+}$ polarization in the decay ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}}.$ A partial reconstruction technique, employing only the fully reconstructed ${D}_{s}^{+}$ and slow pion ${\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ from the ${D}^{*\ensuremath{-}}\ensuremath{\rightarrow}{D}^{0}{\ensuremath{\pi}}_{s}^{\ensuremath{-}}$ decay, enhances sensitivity. The observed branching fractions are $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{D}^{*\ensuremath{-}})=(1.10\ifmmode\pm\else\textpm\fi{}0.18\ifmmode\pm\else\textpm\fi{}0.10\ifmmode\pm\else\textpm\fi{}0.28)%,$ $\mathcal{B}{(B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{D}^{*\ensuremath{-}})=(1.82\ifmmode\pm\else\textpm\fi{}0.37\ifmmode\pm\else\textpm\fi{}0.24\ifmmode\pm\else\textpm\fi{}0.46)%$, and $\mathcal{B}{(B}^{+}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{D}^{**0})=(2.73\ifmmode\pm\else\textpm\fi{}0.78\ifmmode\pm\else\textpm\fi{}0.48\ifmmode\pm\else\textpm\fi{}0.68)%,$ where the first error is statistical, the second systematic, and the third is the uncertainty in the ${D}_{s}^{+}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+}$ branching fraction. The measured ${D}_{s}^{*+}$ longitudinal polarization, ${\ensuremath{\Gamma}}_{L}/\ensuremath{\Gamma}=(50.6\ifmmode\pm\else\textpm\fi{}13.9\ifmmode\pm\else\textpm\fi{}3.6)%,$ is consistent with the factorization prediction of 54%.

Key concepts: Physics, Branching fraction, Particle physics, B meson, Meson, Combinatorics, Mathematics

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Measurement of B→Ds(*)+D*(*) branching fractions — Research Paper | ScholarLens