Study of the decay

✍ Scribed by MyeongJae Lee

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 362 KB
• Volume: 189
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/j.nuclphysbps.2009.03.033

✦ Synopsis

We present a study of τ -→ K -π + π -ντ decay using ∼669 fb -1 data, collected with the Belle detector at the KEKB asymmetric-energy e + e -collider. The data is recorded at a center-of-mass energy 10.58 GeV. The result for the branching ratio is : B = (3.25 ± 0.02(stat.) +0.16 -0.15 (sys.)) × 10 -3 .

We also present results of the precise measurement of the branching ratio of other 3-prong decay modes, τ -→ π -π + π -ντ , τ -→ K -K + π -ντ , and τ -→ K -K + K -ντ .