Search for the Rare Decay B{sup 0}{yields}{tau}{sup +}{tau}{sup -} at BABAR

Journal Article · Fri Jun 23 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.241802· OSTI ID:20777292

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A; Pappagallo, M; Pompili, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I ^[5]

---

1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. Facultat de Fisica ECM, Universitat de Barcelona, E-08028 Barcelona (Spain)
3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. Institute of Physics, University of Bergen, N-5007 Bergen (Norway)

We present the results of a search for the decay B{sup 0}{yields}{tau}{sup +}{tau}{sup -} in a data sample of (232{+-}3)x10{sup 6} {upsilon}(4S){yields}BB decays using the BABAR detector. Certain extensions of the standard model predict measurable levels of this otherwise rare decay. We reconstruct fully one neutral B meson and seek evidence for the signal decay in the rest of the event. We find no evidence for signal events and obtain B(B{sup 0}{yields}{tau}{sup +}{tau}{sup -})<4.1x10{sup -3} at the 90% confidence level.

• OSTI ID: 20777292
• Journal Information: Physical Review Letters, Vol. 96, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.96.241802; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B NEUTRAL MESONS
PARTICLE DECAY
SIGNALS
STANDARD MODEL
TAU PARTICLES