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Title: Search for lepton-flavor and lepton-number-violating Τ → ℓhh' decay modes

Abstract

We search for lepton-flavor and lepton-number-violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h,h'=π ± or K ±) using 854 fb⁻¹of data collected with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. We obtain 90% confidence level upper limits on the τ→ℓhh' branching fractions in the range (2.0–8.4)×10⁻⁸. These results improve upon our previously published upper limits by factors of about 1.8 on average.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1209738
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 719 Journal Issue: 4-5; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

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., and Zhulanov, V. Search for lepton-flavor and lepton-number-violating Τ → ℓhh' decay modes. Netherlands: N. p., 2013. Web. doi:10.1016/j.physletb.2013.01.032.
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. Search for lepton-flavor and lepton-number-violating Τ → ℓhh' decay modes. Netherlands. doi:10.1016/j.physletb.2013.01.032.
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., and Zhulanov, V. Fri . "Search for lepton-flavor and lepton-number-violating Τ → ℓhh' decay modes". Netherlands. doi:10.1016/j.physletb.2013.01.032.
@article{osti_1209738,
title = {Search for lepton-flavor and lepton-number-violating Τ → ℓhh' decay modes},
author = {Miyazaki, Y. and Hayasaka, K. and Adachi, I. and Aihara, H. and Asner, D.M. and Aulchenko, V. and Aushev, T. and Bakich, A.M. and Bay, A. and Bhardwaj, V. and Bhuyan, B. and Bischofberger, M. and Bozek, A. and Bračko, M. and Browder, T.E. and Chang, M.-C. and Chen, A. and Chen, P. and Cheon, B.G. and Chistov, R. and Cho, K. and Choi, Y. and Dalseno, J. and Doležal, Z. and Drutskoy, A. and Eidelman, S. and Epifanov, D. and Fast, J.E. and Gaur, V. and Gabyshev, N. and Garmash, A. and Goh, Y.M. and Haba, J. and Hayashii, H. and Horii, Y. and Hoshi, Y. and Hou, W.-S. and Hyun, H.J. and Iijima, T. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwabuchi, M. and Iwasaki, Y. and Julius, T. and Kang, J.H. and Kiesling, C. and Kim, H.J. and Kim, H.O. and Kim, K.T. and Kim, M.J. and Kim, Y.J. and Ko, B.R. and Koblitz, S. and Kodyš, P. and Korpar, S. and Križan, P. and Krokovny, P. and Kuzmin, A. and Kwon, Y.-J. and Lee, S.-H. and Li, Y. and Lim, C.-L. and Liu, C. and Liu, Z.Q. and Liventsev, D. and Louvot, R. and Matvienko, D. and McOnie, S. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G.B. and Moll, A. and Muramatsu, N. and Nakano, E. and Nakao, M. and Nishida, S. and Nishimura, K. and Nitoh, O. and Ogawa, S. and Ohshima, T. and Okuno, S. and Onuki, Y. and Pakhlov, P. and Pakhlova, G. and Park, C.W. and Park, H.K. and Petrič, M. and Piilonen, L.E. and Röhrken, M. and Ryu, S. and Sahoo, H. and Sakai, Y. and Sanuki, T. and Sato, Y. and Schneider, O. and Schwanda, C. and Senyo, K. and Seon, O. and Shapkin, M. and Shen, C.P. and Shibata, T.-A. and Shiu, J.-G. and Shwartz, B. and Sibidanov, A. and Simon, F. and Singh, J.B. and Smerkol, P. and Sohn, Y.-S. and Sokolov, A. and Solovieva, E. and Stanič, S. and Starič, M. and Sumiyoshi, T. and Tatishvili, G. and Teramoto, Y. and Trabelsi, K. and Tsuboyama, T. and Uchida, M. and Uehara, S. and Unno, Y. and Uno, S. and Urquijo, P. and Varner, G. and Wang, C.H. and Wang, P. and Won, E. and Yamashita, Y. and Yusa, Y. and Zhang, Z.P. and Zhulanov, V.},
abstractNote = {We search for lepton-flavor and lepton-number-violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h,h'=π± or K±) using 854 fb⁻¹of data collected with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. We obtain 90% confidence level upper limits on the τ→ℓhh' branching fractions in the range (2.0–8.4)×10⁻⁸. These results improve upon our previously published upper limits by factors of about 1.8 on average.},
doi = {10.1016/j.physletb.2013.01.032},
journal = {Physics Letters B},
number = 4-5,
volume = 719,
place = {Netherlands},
year = {2013},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1016/j.physletb.2013.01.032

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