Measurement of the τ-lepton lifetime at Belle.

  title={Measurement of the τ-lepton lifetime at Belle.},
  author={Konstantin Belous and Mikhail Shapkin and Andrei Sokolov and Iki Adachi and Hiroaki Aihara and D. M. Asner and V. M. Aulchenko and A. M. Bakich and A. Umesh Bala and Bubu Bhuyan and A. Bobrov and Alexander Bondar and Giovanni Bonvicini and A. S. Bozek and Marko Bra{\vc}ko and T. E. Browder and Daniel {\vC}ervenkov and Vladimir Chekelian and Albert C. Chen and B. G. Cheon and Kirill Chilikin and Ruslan Chistov and Kilwon Cho and Veronika Chobanova and Y. K. Choi and David Cinabro and Jeremy Dalseno and Zdenek Dolezal and Deepanwita Dutta and Simon Eidelman and Dmitry Epifanov and Hamidullah Farhat and J. Fast and Torben Ferber and Viksit Gaur and Sc Ganguly and Artem Garmash and R. Gillard and Y. M. Goh and Bo{\vs}tjan Golob and Joanna Haba and Tatsuyuki Hara and Kazue Hayasaka and H. Hayashii and Y. Hoshi and W.-S. Hou and Takanori Iijima and K. Inami and Akiyuki Ishikawa and Ryosuke Itoh and Takuya Iwashita and Igal Jaegl{\'e} and Tumwiine Julius and E. Kato and H. Kichimi and Ch. Kiesling and D. Y. Kim and H. Kim and J. B. Kim and M. J. Kim and Y. J. Kim and Keisuke Kinoshita and B. R. Ko and Peter Kody{\vs} and S. Korpar and P. Kri{\vz}an and Pavel Krokovny and Thomas Albert Kuhr and A. Kuzmin and Y. -J. Kwon and J. S. Lange and Seunghoon Lee and James Libby and Dmitri Liventsev and P. A. Lukin and Dmitry Matvienko and H. Miyata and Roman Mizuk and G. B. Mohanty and Takaaki Mori and Roberto Mussa and Yasushi Nagasaka and Eiji Nakano and Michiyasu Nakao and Manjushree Nayak and E. Nedelkovska and C. B. Richard Ng and N. K. Nisar and S. Nishida and Osamu Nitoh and Sadahide Ogawa and S. Okuno and S. L. Olsen and Waclaw Ostrowicz and Galina Pakhlova and C. W. Park and H. Park and T. K. Pedlar and Rok Pestotnik and Marko Petri{\vc} and L. E. Piilonen and Markus Raimund Ritter and Markus Roehrken and Armine Rostomyan and Sunmin Ryu and H. Sahoo and To. Saito and Y. Sakai and Sathyakama Sandilya and Daniel Santel and Luka {\vS}antelj and T. Sanuki and Vladimir Savinov and Olivier Schneider and Gotz Schnell and Christoph Schwanda and D. Semmler and Katsumi Senyo and O. Seon and V. E. Shebalin and C. P. Shen and T. -A. Shibata and J.-G. Shiu and Bernard Shwartz and A. L. Sibidanov and F. Simon and Y. S. Sohn and Samo Stani{\vc} and Marko Staric and Michael Steder and T. Sumiyoshi and Umberto Tamponi and G. Tatishvili and Y. Teramoto and Karim Trabelsi and T. Tsuboyama and M. Uchida and Satoshi Uehara and T. V. Uglov and Yasushi Un-no and Shigemichi Uno and Yu. V. Usov and S. E. Vahsen and C B Van Hulse and Pit Vanhoefer and Gary S. Varner and K. E. Varvell and A. Vinokurova and Vitaly Vorobyev and M. Wagner and C. H. Wang and Ping Wang and Masamitsu Watanabe and Yoshiro Watanabe and K. M. Williams and E. Won and J. Yamaoka and Yoshimichi Yamashita and Sergey Yashchenko and Youngmin Yook and C. Z. Yuan and Z. P. Zhang and V. N. Zhilich and Ana Zupanc},
  journal={Physical review letters},
  volume={112 3},
  • Konstantin Belous, Mikhail Shapkin, +162 authors Ana Zupanc
  • Published 2014
  • Physics, Medicine
  • Physical review letters
  • The lifetime of the τ lepton is measured using the process e+ e- → τ+ τ- , where both τ leptons decay to 3πν(τ). The result for the mean lifetime, based on 711  fb(-1) of data collected with the Belle detector at the ϒ(4S) resonance and 60  MeV below, is τ=(290.17±0.53(stat)±0.33(syst))×10(-15)  s. The first measurement of the lifetime difference between τ+ and τ- is performed. The upper limit on the relative lifetime difference between positive and negative τ leptons is |Δτ|/τ<7.0×10(-3) at 90… CONTINUE READING

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