User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

Anomalous enhancement of a penguin hadronic matrix element in B ---> K eta-prime

Primary tabs

Gérard, Jean-Marc [UCL] Kou, E.

(eng) We estimate the density matrix element for the pi^0, eta and eta' production from the vacuum in the large-N_c limit. As a consequence, we find that the QCD axial anomaly leads to highly non-trivial corrections to the usual flavour SU(3) relations between B^0-> K^0 pi^0, B^0-> K^0 eta and B^0-> K^0 eta' decay amplitudes. These corrections may explain why the B-> K eta' branching ratio is about six times larger than the B-> K pi one. Comment: 5 pages, 1 figure

Document type Article de périodique (Journal article)
Publication date 2006
Journal information "Physical Review Letters" - Vol. 97, p. 261804 (2006)
Peer reviewed yes
e-issn 1079-7114
issn 0031-9007
Publication status Publié
Affiliation UCL
Keywords High Energy Physics - Phenomenology
Links
  1. Atwood David, Soni Amarjit, B → η′ + X and the QCD anomaly, 10.1016/s0370-2693(97)00592-3
  2. Ahmady Mohammad R., Kou Emi, Sugamoto Akio, Nonspectator contribution: A mechanism for inclusiveB→Xsη′and exclusiveB→K(*)η′decays, 10.1103/physrevd.58.014015
  3. Ali A., Chay J., Greub C., Ko P., Contribution of b→sgg through the QCD anomaly in exclusive decays and, 10.1016/s0370-2693(98)00174-9
  4. Dighe Amol S., Gronau Michael, Rosner Jonathan L., Amplitude relations for B decays involving η and η′, 10.1016/0370-2693(95)01341-5
  5. Erratum, 10.1016/0370-2693(96)00492-3
  6. Halperin Igor, Zhitnitsky Ariel, B→Kη′decay as a unique probe of theη′meson, 10.1103/physrevd.56.7247
  7. Petrov Alexey A., Intrinsic charm of light mesons andCPviolation in heavy quark decay, 10.1103/physrevd.58.054004
  8. Beneke Martin, Neubert Matthias, Flavor-singlet B-decay amplitudes in QCD factorization, 10.1016/s0550-3213(02)01091-x
  9. Williamson Alexander R., Zupan Jure, Two bodyBdecays with isosinglet final states in soft collinear effective theory, 10.1103/physrevd.74.014003
  10. Williamson Alexander R., Zupan Jure, Publisher’s Note: Two bodyBdecays with isosinglet final states in soft collinear effective theory [Phys. Rev. D74, 014003 (2006)], 10.1103/physrevd.74.039901
  11. Charng Yeo-Yie, Kurimoto T., Li Hsiang-nan, Gluonic contribution toB→η(′)form factors, 10.1103/physrevd.74.074024
  12. Weinberg Steven, The U(1) problem, 10.1103/physrevd.11.3583
  13. 't Hooft G., Symmetry Breaking through Bell-Jackiw Anomalies, 10.1103/physrevlett.37.8
  14. Jackiw R., Rebbi C., Vacuum Periodicity in a Yang-Mills Quantum Theory, 10.1103/physrevlett.37.172
  15. Callan C.G., Dashen R.F., Gross D.J., The structure of the gauge theory vacuum, 10.1016/0370-2693(76)90277-x
  16. Gérard J.-M., Kou E., η−η′ masses and mixing: a large Nc reappraisal, 10.1016/j.physletb.2005.04.057
  17. Schäfer T., Shuryak E. V., Glueballs and Instantons, 10.1103/physrevlett.75.1707
  18. Chivukula R.Sekhar, Flynn Jonathan M., Georgi Howard, Polychromatic penguins don't fly, 10.1016/0370-2693(86)91438-3
  19. Bardeen William A., Buras A.J., Gérard J.-M., The rule in the large-N limit, 10.1016/0370-2693(86)90150-4
  20. Ali A., Greub C., Analysis of two-body nonleptonicBdecays involving light mesons in the standard model, 10.1103/physrevd.57.2996
  21. Bardeen William A., Buras A.J., Gérard J.-M., The K → ππ decays in the large-N limit quark evolution, 10.1016/0550-3213(87)90091-5
  22. Bardeen William A., Buras A.J., Gerard J.-M., A consistent analysis of the ΔI = 12 rule for K decays, 10.1016/0370-2693(87)91156-7
  23. Lipkin Harry J., FSI rescattering in B± decays via states with η, η′ ω and φ, 10.1016/s0370-2693(98)00707-2
  24. Lipkin Harry J., Penguins, trees and final state interactions in B decays in broken SU3, 10.1016/s0370-2693(97)01262-8
  25. Dighe Amol S., Gronau Michael, Rosner Jonathan L., BDecays Involvingηandη′in Light of theB→Kη′Process, 10.1103/physrevlett.79.4333
  26. Dighe Amol S., Gronau Michael, Rosner Jonathan L., Bdecays to charmlessVPfinal states, 10.1103/physrevd.57.1783
Bibliographic reference Gérard, Jean-Marc ; Kou, E.. Anomalous enhancement of a penguin hadronic matrix element in B ---> K eta-prime. In: Physical Review Letters, Vol. 97, p. 261804 (2006)
Permanent URL http://hdl.handle.net/2078/31040