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A Search for the Rare Decay B0 to Tau+tau- AtBaBar

出版	United States. Department of Energy, 2005
URL	http://books.google.com.hk/books?id=hahvAQAACAAJ&hl=&source=gbs_api

註釋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) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} 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 {Beta}(B{sup 0} {yields} {tau}{sup +}{tau}{sup -})