Improved measurement of absolute hadronic branching fractions of the Ds+ meson

P. U.E. Onyisi*, G. Bonvicini, D. Cinabro, M. J. Smith, P. Zhou, P. Naik, J. Rademacker, K. W. Edwards, R. A. Briere, H. Vogel, J. L. Rosner, J. P. Alexander, D. G. Cassel, S. Das, R. Ehrlich, L. Gibbons, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. L. KreinickV. E. Kuznetsov, J. R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi, W. M. Sun, J. Yelton, P. Rubin, N. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M. Kornicer, R. E. Mitchell, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, J. Hietala, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, T. Xiao, A. Powell, C. Thomas, G. Wilkinson, D. M. Asner, G. Tatishvili, J. Y. Ge, D. H. Miller, I. P.J. Shipsey, B. Xin, G. S. Adams, J. Napolitano, K. M. Ecklund, J. Insler, H. Muramatsu, L. J. Pearson, E. H. Thorndike, M. Artuso, S. Blusk, R. Mountain, T. Skwarnicki, S. Stone, J. C. Wang, L. M. Zhang

*Corresponding author for this work

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41 Scopus citations

Abstract

The branching fractions of Ds± meson decays serve to normalize many measurements of processes involving charm quarks. Using 586 pb-1 of e+e- collisions recorded at a center of mass energy of 4.17 GeV, we determine absolute branching fractions for 13 Ds± decays in 16 reconstructed final states with a double tag technique. In particular we make a precise measurement of the branching fraction B(Ds→K -K+π+)=(5.55±0.14±0.13)%, where the uncertainties are statistical and systematic, respectively. We find a significantly reduced value of B(Ds→π+π0η ) compared to the world average, and our results bring the inclusively and exclusively measured values of B(D s→ηX) into agreement. We also search for CP-violating asymmetries in Ds decays and measure the cross section of e+e-→Ds*Ds at Ecm=4.17 GeV.

Original languageEnglish (US)
Article number032009
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume88
Issue number3
DOIs
StatePublished - Aug 20 2013

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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