학술논문
Improved Measurement of Absolute Hadronic Branching Fractions of the Ds+ Meson
Document Type
Working Paper
Author
CLEO Collaboration; Onyisi, P. U. E.; Bonvicini, G.; Cinabro, D.; Smith, M. J.; Zhou, P.; Naik, P.; Rademacker, J.; Edwards, K. W.; Briere, R. A.; Vogel, H.; Rosner, J. L.; Alexander, J. P.; Cassel, D. G.; Das, S.; Ehrlich, R.; Gibbons, L.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Kreinick, D. L.; Kuznetsov, V. E.; Patterson, J. R.; Peterson, D.; Riley, D.; Ryd, A.; Sadoff, A. J.; Shi, X.; Sun, W. M.; Yelton, J.; Rubin, P.; Lowrey, N.; Mehrabyan, S.; Selen, M.; Wiss, J.; Libby, J.; Kornicer, M.; Mitchell, R. E.; Besson, D.; Pedlar, T. K.; Cronin-Hennessy, D.; Hietala, J.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Xiao, T.; Powell, A.; Thomas, C.; Wilkinson, G.; Asner, D. M.; Tatishvili, G.; Ge, J. Y.; Miller, D. H.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Napolitano, J.; Ecklund, K. M.; Insler, J.; Muramatsu, H.; Pearson, L. J.; Thorndike, E. H.; Artuso, M.; Blusk, S.; Mountain, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, L. M.
Source
Phys. Rev. D 88, 032009 (2013)
Subject
Language
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+ pi+) = (5.55 +- 0.14 +- 0.13)%, where the uncertainties are statistical and systematic respectively. We find a significantly reduced value of B(Ds -> pi+ pi0 eta') compared to the world average, and our results bring the inclusively and exclusively measured values of B(Ds -> eta' X)$ 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.
Comment: 12 pages, 3 figures. Submitted to Physical Review D. PDF also available through http://www.lns.cornell.edu/public/CLNS/2013/ v2: as published in PRD
Comment: 12 pages, 3 figures. Submitted to Physical Review D. PDF also available through http://www.lns.cornell.edu/public/CLNS/2013/ v2: as published in PRD