Phys. Rev. Lett.
100,
201802
(2008)
[5 pages]
Search for the Decay KL0→π0νν̅
J. K. Ahn et al. E391a Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
J. K. Ahn1, Y. Akune2, V. Baranov3, K. F. Chen4, J. Comfort5, M. Doroshenko6,*, Y. Fujioka2, Y. B. Hsiung4, T. Inagaki6,7, S. Ishibashi2, N. Ishihara7, H. Ishii8, E. Iwai8, T. Iwata9, I. Kato9, S. Kobayashi2, T. K. Komatsubara7, A. S. Kurilin3, E. Kuzmin3, A. Lednev10,11, H. S. Lee1, S. Y. Lee1, G. Y. Lim7, J. Ma11, T. Matsumura12, A. Moisseenko3, H. Morii13, T. Morimoto7, T. Nakano14, H. Nanjo13, J. Nix11, T. Nomura13, M. Nomachi8, H. Okuno7, K. Omata7, G. N. Perdue11, S. Podolsky3,†, K. Sakashita8,‡, T. Sasaki9, N. Sasao13, H. Sato9, T. Sato7, M. Sekimoto7, T. Shinkawa12, Y. Sugaya8, A. Sugiyama2, T. Sumida13, S. Suzuki2, Y. Tajima9, S. Takita9, Z. Tsamalaidze3, T. Tsukamoto2,§, Y. C. Tung4, Y. W. Wah11, H. Watanabe11,‡, M. L. Wu4, M. Yamaga7,**, T. Yamanaka8, H. Y. Yoshida9, and Y. Yoshimura7 (E391a Collaboration)
1Department of Physics, Pusan National University, Busan 609-735, Republic of Korea
2Department of Physics, Saga University, Saga 840-8502, Japan
3Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia
4Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
5Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287, USA
6Department of Particle and Nuclear Research, The Graduate University for Advanced Science (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan
7Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
8Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
9Department of Physics, Yamagata University, Yamagata 990-8560, Japan
10Institute for High Energy Physics, Protvino, Moscow region 142281, Russia
11Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
12Department of Applied Physics, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan
13Department of Physics, Kyoto University, Kyoto 606-8502, Japan
14Research Center of Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
Received 26 December 2007; published 22 May 2008
We performed a search for the KL0→π0νν̅ decay at the KEK 12-GeV proton synchrotron. No candidate events were observed. An upper limit on the branching ratio for the decay was set to be 6.7×10-8 at the 90% confidence level.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.201802
DOI:
10.1103/PhysRevLett.100.201802
PACS:
13.20.Eb, 11.30.Er, 12.15.Hh
*Present address: Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia. †Present address: Scarina Gomel’ State University, Gomel’ BY-246699, Belarus. ‡Present address: Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan. §Deceased. **Present address: RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
|
|
