Leptonic B decays at BABAR

✍ Scribed by Thomas B. Moore

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 574 KB
• Volume: 117
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)90631-1

✦ Synopsis

We present results on searches for the rare B decays B 0 → + -( = e or µ) and

The data used in these analyses were collected with the BABAR detector at the PEP-II e + e -storage ring during the years 2000 and 2001. The B 0 → + -search was performed using an integrated luminosity of 54.4 fb -1 accumulated at the Υ (4S) resonance (about 60 million B B pairs) while the B + → K + ν ν search was performed with 50.7 fb -1 (about 56 million B B pairs). Both analyses use an additional 6.4 fb -1 of data accumulated about 40 MeV below resonance. We see no evidence for a signal in either the B → + -or B → K + ν ν decay modes and set the following upper limits at the 90% CL: -7 , and B(B + → K + ν ν) < 9.4 × 10 -5 . ELSEVIER