Search for lepton-flavor and lepton-number-violating τ→ℓhh′ decay modes

Miyazaki, Y.; Hayasaka, K.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Bay, A.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M.-C.; Chen, A.; Chen, P.; Cheon, B. G.; Chistov, R.; Cho, K.; Choi, Y.; Dalseno, J.; Doležal, Z.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goh, Y. M.; Haba, J.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Ko, B. R.; Koblitz, S.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuzmin, A.; Kwon, Y.-J.; Lee, S.-H.; Li, Y.; Lim, C.-L.; Liu, C.; Liu, Z. Q.; Liventsev, D.; Louvot, R.; Matvienko, D.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Muramatsu, N.; Nakano, E.; Nakao, M.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H. K.; Petrič, M.; Piilonen, L. E.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Sanuki, T.; Sato, Y.; Schneider, O.; Schwanda, C.; Senyo, K.; Seon, O.; Shapkin, M.; Shen, C. P.; Shibata, T.-A.; Shiu, J.-G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Singh, J. B.; Smerkol, P.; Sohn, Y.-S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Tsuboyama, T.; Uchida, M.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Wang, C. H.; Wang, P.; Won, E.; Yamashita, Y.; Yusa, Y.; Zhang, Z. P.; Zhulanov, V.

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Elsevier, Physics Letters B, 4-5(719), p. 346-353, 2013

DOI: 10.1016/j.physletb.2013.01.032

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Search for lepton-flavor and lepton-number-violating τ→ℓhh′ decay modes

Journal article published in 2013 by Y. Miyazaki, K. Hayasaka, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder and other authors.

This paper is made freely available by the publisher.

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Abstract

We search for lepton-flavor and lepton-number-violating tau decays into a lepton (l = electron or muon) and two charged mesons (h, h' = pi(+/-) or K-+/-) using 854 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain 90% confidence level upper limits on the tau -> lhh' branching fractions in the range (2.0-8.4) x 10(-8). These results improve upon our previously published upper limits by factors of about 1.8 on average. (c) 2013 Elsevier B.V. All rights reserved.

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Search for lepton-flavor and lepton-number-violating τ→ℓhh′ decay modes

Abstract