e-Article
Branching fraction of τ-→π-Ks0Ks0(π0)ντ decays
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article
Author
Lees, JP; Poireau, V; Tisserand, V; Tico, J Garra; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, DN; Kerth, LT; Kolomensky, Yu G; Lynch, G; Koch, H; Schroeder, T; Asgeirsson, DJ; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Khan, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Yushkov, AN; Bondioli, M; Kirkby, D; Lankford, AJ; Mandelkern, M; Atmacan, H; Gary, JW; Liu, F; Long, O; Vitug, GM; Campagnari, C; Hong, TM; Kovalskyi, D; Richman, JD; West, CA; Eisner, AM; Kroseberg, J; Lockman, WS; Martinez, AJ; Schumm, BA; Seiden, A; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Ongmongkolkul, P; Porter, FC; Rakitin, AY; Andreassen, R; Huard, Z; Meadows, BT; Sokoloff, MD; Sun, L; Bloom, PC; Ford, WT; Gaz, A; Nauenberg, U; Smith, JG; Wagner, SR; Ayad, R; Toki, WH; Spaan, B; Schubert, KR; Schwierz, R; Bernard, D; Verderi, M; Clark, PJ; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Baldini-Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Patteri, P; Peruzzi, IM; Piccolo, M; Rama, M; Zallo, A; Contri, R; Guido, E; Vetere, M Lo
Source
Physical Review D. 86(9)
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Language
Abstract
We present a study of τ -→π -KS0KS0(π0) ν τ and τ -→K -KS0KS0(π0) ν τ decays using a data set of 430 million τ lepton pairs, corresponding to an integrated luminosity of 468fb -1, collected with the BABAR detector at the PEP-II asymmetric energy e +e - storage rings. We measure branching fractions of (2.31±0.04±0.08) ×10 -4 and (1.60±0.20±0.22)×10 -5 for the τ -→π -KS0KS0ν τ and τ -→π -KS0KS0π0ν τ decays, respectively. We find no evidence for τ -→K -KS0KS0ν τ and τ -→K -KS0KS0π0ν τ decays and place upper limits on the branching fractions of 6.3×10 -7 and 4.0×10 -7 at the 90% confidence level. © 2012 American Physical Society.