Measurement of the τ lepton mass and an upper limit on the mass difference between τ+ and τ-

Belous, K.; Shapkin, M.; Sokolov, A.; Abe, K.; Adachi, I.; Aihara, H.; Anipko, D.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A.M.; Barberio, E.; Bay, A.; Bedny, I.; Bitenc, U.; Bizjak, I.; Blyth, S.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.E.; Chang, M.-C.; Chen, A.; Chen, K.-F.; Chen, W.T.; Cheon, B.G.; Chistov, R.; Choi, Y.; Choi, Y.K.; Cole, S.; Dalseno, J.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Fratina, S.; Fujikawa, M.; Gabyshev, N.; Gershon, T.; Gokhroo, G.; Golob, B.; Ha, H.; Haba, J.; Hasegawa, Y.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W.-S.; Iijima, T.; Ikado, K.; Imoto, A.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kaji, H.; Kang, J.H.; Kapusta, P.; Katayama, N.; Kawasaki, T.; Khan, H.R.; Kichimi, H.; Kim, Y.J.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, R.; Kuo, C.C.; Kuzmin, A.; Kwon, Y.-J.; Lee, J.; Lee, M.J.; Lee, S.E.; Lesiak, T.; Lin, S.-W.; Liventsev, D.; Majumder, G.; Mandl, F.; Matsumoto, T.; Matyja, A.; McOnie, S.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, K.S.; Pestotnik, R.; Piilonen, L.E.; Poluektov, A.; Sakai, Y.; Satoyama, N.; Schneider, O.; Schümann, J.; Seidl, R.; Senyo, K.; Sevior, M.E.; Shibuya, H.; Shwartz, B.; Singh, J.B.; Somov, A.; Soni, N.; Stanič, S.; Starič, M.; Stoeck, H.; Suzuki, S.Y.; Takasaki, F.; Tamai, K.; Tanaka, M.; Taylor, G.N.; Teramoto, Y.; Tian, X.C.; Tikhomirov, I.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Uglov, T.; Ueno, K.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Villa, S.; Vinokurova, A.; Wang, C.H.; Watanabe, Y.; Won, E.; Xie, Q.L.; Yabsley, B.D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, Z.P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

doi:10.1103/PhysRevLett.99.011801

Measurement of the τ lepton mass and an upper limit on the mass difference between τ+ and τ-

Belous, K. ; Shapkin, M. ; Sokolov, A. ; Abe, K.[...]

The mass of the τ lepton has been measured in the decay mode τ→3πντ using a pseudomass technique. The result obtained from 414fb-1 of data collected with the Belle detector is Mτ=[1776.61±0. 13(stat)±0.35(sys)]MeV/c2. The upper limit on the relative mass difference between positive and negative τ leptons is |Mτ+-Mτ-|/ Mτ<2.8×10-4 at 90% confidence level. © 2007 The American Physical Society.

Published in:

Physical Review Letters, 99, 1, 011801

Year:

2007

DOI:

10.1103/PhysRevLett.99.011801

Other identifiers:

Scopus: 2-s2.0-34547290479
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Laboratories:

LPHE

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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
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