Published March 31, 2006
| Version v1
Journal article
Experimental Limits on Weak Annihilation Contributions to b→ulν Decays
Creators
- Rosner, J.L.1
- Adam, N.E.2
- Alexander, J.P.2
- Berkelman, K.2
- Cassel, D.G.2
- Duboscq, J.E.2
- Ecklund, K.M.2
- Ehrlich, R.2
- Fields, L.2
- Gibbons, L.2
- Gray, R.2
- Gray, S.W.2
- Hartill, D.L.2
- Heltsley, B.K.2
- Hertz, D.2
- Jones, C.D.2
- Kandaswamy, J.2
- Kreinick, D.L.2
- Kuznetsov, V.E.2
- Mahlke-Krueger, H.2
- and others
- CLEO Collaboration
- 1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
- 2. Cornell University, Ithaca, New York 14853 (United States)
Description
We present the first experimental limits on high-q2 contributions to charmless semileptonic B decays of the form expected from the weak annihilation (WA) decay mechanism. Such contributions could bias determinations of vertical bar Vub vertical bar from inclusive measurements of B→Xulν. Using a wide range of models based on available theoretical input we set a limit of ΓWA/Γb→u<7.4% (90% confidence level) on the WA fraction, and assess the impact on previous inclusive determinations of vertical bar Vub vertical bar
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.96.121801;
- arXiv
- arXiv:hep-ex/0601027v1;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 96
- Journal Issue
- 12
- Journal Page Range
- p. 121801-121801.5
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37078711
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANNIHILATION; B MESONS; NEUTRINOS; SEMILEPTONIC DECAY; WEAK INTERACTIONS
- Descriptors DEC
- BASIC INTERACTIONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; WEAK PARTICLE DECAY
Optional Information
- Notes
- (c) 2006 The American Physical Society
- Collaborations
- CLEO Collaboration