Measurements of branching fractions of tau lepton decays with one or more K-S(0)

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. ; Bracko, M. ; Browder, T. E. ; Cervenkov, D. ; Chekelian, V. ; Cheon, B. G. ; Chilikin, K. ; Chistov, R. ; Cho, K. ; Chobanova, V. ; Choi, S. -K. ; Choi, Y. ; Dalseno, J. ; Dolezal, 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. ; Kodys, P. ; Krizan, P. ; Krokovny, P. ; Kuhr, T. ; Kuzmin, A. ; 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. ; Petric, M. ; Piilonen, L. E. ; Ritter, M. ; Roehrken, 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. ; Stanic, S. ; Staric, 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. ; Belle Collaboration

We report measurements of branching fractions of tau lepton decays to final states with a K-S(0) 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 beta(tau(-) -> (KSX-)-X-0 nu(tau)) = (9.15 +/- 0.01 +/- 0.15) X 10(-3), where X- can be anything; the exclusive branching fractions are beta(tau(-) -> pi(-) K-S(0)nu(tau)) = (4.16 +/- 0.01 +/- 0.08) X 10(-3), beta(tau(-) -> K- K-S(0)nu(tau)) = (7.40 +/- 0.07 +/- 0.27) X 10(-4), beta(tau(-) -> pi(-) K-S(0)pi(0)nu(tau)) = (1.93 +/- 0.02 +/- 0.07) X 10(-3), beta(tau(-) -> K- K-S(0)pi(0)nu(tau)) = (7.48 +/- 0.10 +/- 0.37) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 nu(tau)) = (2.33 +/- 0.03 +/- 0.09) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau)) = (2.00 +/- 0.22 +/- 0.20) X 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(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau) decays, clear signals for the intermediate states tau(-) -> pi(-) f(1)(1285)nu(tau) and tau(-) -> K*- K-S(0)pi(0)nu(tau) are observed.


Published in:
Physical Review D, 89, 7, 072009
Year:
2014
Publisher:
College Pk, Amer Physical Soc
ISSN:
1550-7998
Laboratories:




 Record created 2014-05-19, last modified 2018-12-03


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