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          Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 715996.0, MPI für Physik / YB 2016
Measurements of Branching Fractions of $\\tau$ Lepton Decays with one or more $K^{0}_{S}$
Authors:Belle Collaboration; Ryu, S.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Bala, A.; Bhuyan, B.; Bobrov, A.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Chobanova, V.; Choi, S. -K.; Choi, Y.; Dalseno, J.; Doležal, Z.; Dutta, D.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Gaur, V.; Gabyshev, N.; Ganguly, S.; Garmash, A.; Gillard, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hoshi, Y.; Hou, W. -S.; Iijima, T.; Inami, K.; Ishikawa, A.; Iwashita, T.; Julius, T.; Kato, E.; Kiesling, C.; Kim, B. H.; Kim, D. Y.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, S. K.; Kim, Y. J.; Ko, B. R.; Kodyš, P.; Križan, P.; Krokovny, P.; Kuhr, T.; Kwon, Y. -J.; Lee, S. -H.; Li, J.; Libby, J.; Liventsev, D.; Lukin, P.; MacNaughton, J.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Moll, A.; Mori, T.; Mussa, R.; Nakano, E.; Nakao, M.; Nakazawa, H.; Nayak, M.; Nedelkovska, E.; Nisar, N. K.; Nishida, S.; Nitoh, O.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Pedlar, T. K.; Petrič, M.; Piilonen, L. E.; Ritter, M.; Röhrken, M.; Rostomyan, A.; Sahoo, H.; Saito, T.; Sakai, Y.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Semmler, D.; Seon, O.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sohn, Y. -S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tamponi, U.; Tatishvili, G.; Teramoto, Y.; Uchida, M.; Uehara, S.; Unno, Y.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Wagner, M. N.; Wang, C. H.; Wang, P.; Watanabe, M.; Watanabe, Y.; Won, E.; Yamashita, Y.; Yashchenko, S.; Yook, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:89
Start Page:072009
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We report measurements of branching fractions of $\\tau$ lepton decays to final states with a $K^{0}_{S}$ meson using a 669 fb$^{-1}$ data sample accumulated with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The inclusive branching fraction is measured to be $\\mathcal{B}(\\tau^{-} \\to K^{0}_{S}\\ X^{-} \\nu_{\\tau})=(9.15 \\pm 0.01 \\pm 0.15) \\times 10^{-3}$, where $X^{-}$ can be anything; the exclusive branching fractions are $\\mathcal{B}(\\tau^{-} \\to \\pi^{-} K^{0}_{S} \\nu_{\\tau}) = (4.16 \\pm 0.01 \\pm 0.08) \\times 10^{-3}$, $\\mathcal{B}(\\tau^{-} \\to K^{-} K^{0}_{S} \\nu_{\\tau}) = (7.40 \\pm 0.07 \\pm 0.27) \\times 10^{-4}$, $\\mathcal{B}(\\tau^{-} \\to \\pi^{-} K^{0}_{S} \\pi^{0} \\nu_{\\tau}) = (1.93 \\pm 0.02 \\pm 0.07) \\times 10^{-3}$, $\\mathcal{B}(\\tau^{-} \\to K^{-} K^{0}_{S} \\pi^{0} \\nu_{\\tau}) = (7.48 \\pm 0.10 \\pm 0.37)\\times 10^{-4}$, $\\mathcal{B}(\\tau^{-} \\to \\pi^{-} K^{0}_{S} K^{0}_{S} \\nu_{\\tau}) = (2.33 \\pm 0.03 \\pm 0.09) \\times 10^{-4}$, $\\mathcal{B}(\\tau^{-} \\to \\pi^{-} K^{0}_{S} K^{0}_{S} \\pi^{0} \\nu_{\\tau}) = (2.00 \\pm 0.22 \\pm 0.20) \\times 10^{-5}$, where the first uncertainty is statistical and the second is systematic. For each mode, the accuracy is improved over that of pre-$B$-factory measurements by a factor ranging from five to ten. In $\\tau^{-} \\to \\pi^{-} K^0_S K^0_S \\pi^{0} \\nu_{\\tau}$ decays, clear signals for the intermediate states $\\tau^{-} \\to \\pi^- f_{1}(1285)\\nu_{\\tau}$ and $\\tau^{-} \\to K^{*-}K^{0}_{S} \\pi^{0} \\nu_{\\tau}$ are observed.
Classification / Thesaurus:Belle II
Comment of the Author/Creator:17 pages, 18 figures.
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
Affiliations:MPI für Physik
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