Precise measurement of hadronic τ-decays in modes with η mesons

K. Abe,I. Adachi,Hiroaki Aihara,K. Arinstein,T. Aso,Vladimir M. Aulchenko,Tagir A Kh Aushev,T. Aziz, S. Bahinipati,A. M. Bakich,Vladislav Balagura, Y. Ban,Sw W. Banerjee,Elisabetta L. Barberio, A. Bay,I. V. Bedny,K. S. Belous,Vedula Ravi Bhardwaj,Urban Bitenc,S. C. Blyth,Alex E. Bondar,Andrzej Bozek,M. Bračko,Jolanta Brodzicka,Thomas E. Browder,M. C. Chang,Pin Chang,Yuan Chao,A. Chen,Kaifeng Chen,Wanting Chen,Byunggu Cheon,Chaochien Chiang,R. Chistov,I. S. Cho,Sookyung Choi,Y. K. Choi,S. Cole,J. P. Dalseno,Michael V. Danilov,Aron C. Das,M. Dash,J. Dragic,A. Drutskoy,Simon I. Eidelman,D. Epifanov,Saša Fratina,H. Fujii,M. Fujikawa,N. Gabyshev,Alexei Yu Garmash,A. Go,G. Gokhroo,Pablo Goldenzweig,B. Golob,Matthias Große-Perdekamp,Hayg Guler,H. Ha,Junji Haba,K. Hara, T. Hara,Y. Hasegawa,Nicholas C. Hastings,K. Hayasaka,Hisaki Hayashii,M. Hazumi,Daniel M. Heffernan,T. Higuchi,Luc Hinz,H. Hoedlmoser,T. Hokuue,Y. Horii,Y. Hoshi,K. Hoshina,S. Hou,Weishu Hou,Y. B. Hsiung,Hyojung Hyun,Y. Igarashi,T. Iijima,K. Ikado,K. Inami,Akimasa Ishikawa,Hirokazu Ishino,R. Itoh,M. Iwabuchi,Masahiko Iwasaki, Y. Iwasaki,C. Jacoby,Neha J. Joshi,M. Kaga,Dongha Kah,H. Kaji,S. Kajiwara,Hidekazu Kakuno,Juhwan Kang,Piotr J. Kapusta,S. U. Kataoka,N. Katayama,Hideyuki Kawai,T. Kawasaki,A. Kibayashi,Hiromichi Kichimi, Hongju Kim,Hyunok Kim,Jungho Kim,Sunkee Kim,Youngjin Kim,K. Kinoshita,Samo Korpar,Y. Kozakai,Peter Križan,Pavel P. Krokovny,Rajesh Kumar,E. Kurihara,A. Kusaka,A. S. Kuzmin,Youngjoon Kwon,Jens Sören Lange,Garth D. Leder,J. Lee,J. S. Lee,Moonjoo Lee,S. E. Lee,Tadeusz Lesiak, J. Li, A. Limosani,Sunwen Lin,Y. Liu,D. Liventsev,Jimmy N. Macnaughton, G. Majumder,Franz Mandl, D. Marlow, T. Matsumura,Adam Tomasz Matyja,S. McOnie, T. Medvedeva,Y. Mikami,Winfried A. Mitaroff,Kenkichi Miyabayashi,H. Miyake,H. Miyata,Y. Miyazaki,Roman V. Mizuk,Glenn R. Moloney,T. Mori,James A. Mueller,A. Murakami,Tadashi Nagamine, Y. Nagasaka,Yu Nakahama,I. Nakamura,E. Nakano,M. Nakao, H. Nakayama,H. Nakazawa,Z. Natkaniec,Kazushi Neichi,S. Nishida,K. Nishimura,Yoji Nishio,Isao Nishizawa,O. Nitoh,S. Noguchi,T. Nozaki,A. Ogawa,S. Ogawa,T. Ohshima,S. Okuno,Stephen Lars Olsen,S. Ono,W. Ostrowicz,H. Ozaki,P. N. Pakhlov,G. Pakhlova,H. Palka,C. W. Park,H. K. Park,Kwangsun Park,N. Parslow,L. S. Peak,Manfred Pernicka,Rok Pestotnik,Matthias G. Peters,Leo E. Piilonen,A. Poluektov,Jamal Rorie,Maria Róz̀anśka,Himansu Sahoo, Y. Sakai,H. Sakamoto,H. Sakaue,Tapas R. Sarangi,N. Satoyama,K. Sayeed,Thomas Schietinger,Olivier Schneider,Peter Schönmeier,J. Schümann,C. Schwanda,A. J. Schwartz,Ralf Seidl,A. Sekiya,K. Senyo,Martin E. Sevior,L. Shang,M. M. Shapkin,Chengping Shen,H. Shibuya,S. Shinomiya,Jingge Shiu, B. A. Shwartz,Jaivir B. Singh,Anatoli A. Sokolov,Elena N. Solovieva,A. M. Somov,Samo Stanič,Marko Starič,J. Stypula,A. Sugiyama,K. Sumisawa,T. Sumiyoshi, Sohyamagata Suzuki,O. Tajima,Fumihiko Takasaki,K. Tamai,N. Tamura,Manobu Tanaka,N. Taniguchi,Geoffrey N. Taylor,Y. Teramoto,I. N. Tikhomirov,Karim Trabelsi,Y. F. Tse,Toru Tsuboyama,K. Uchida,Y. Uchida,S. Uehara,K. Ueno,T. Uglov, Y. Unno,S. Uno,Phillip Urquijo,Yutaka Ushiroda,Yu V. Usov,Gary S. Varner,Kevin E. Varvell,Kim Vervink,Stefano Villa,Anna Vinokurova,Chiachi Wang,Chunghsiang Wang, J. Wang,M. Z. Wang, P. Wang,Xiaolong Wang,M. Watanabe, Y. Watanabe,R. Wedd,J. Wicht,Laurenz Widhalm,Jaroslaw Wiechczynski,E. Won,Bruce D. Yabsley,A. Yamaguchi,Hitoshi Yamamoto,Mio Yamaoka, Y. Yamashita,M. Yamauchi,Chao Yuan,Y. Yusa,C. C. Zhang,Liming Zhang,Ziping Zhang,V. Zhilich,Vladimir V. Zhulanov, A. Zupanc,N. Zwahlen

23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007（2007）

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摘要

We have measured branching fractions of hadronic τdecays involving an η meson using 485 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the following branching fractions: B(τ - → K-ην) = (1.62 ± 0.05 ± 0.09) × 10-4, B(τ - → K-η0π=ηντ ) = (4.7 ± 1.1 ± 0.4) × 10-5, B(τ - → π-π0ηντ ) = (1.39 ± 0.03 ± 0.07) × 10-3, and B(τ - → K-ην7tau; ) = (1.13 ±0.19 ± 0.07) ×10-4 improving the accuracy compared to the best previous measurements by factors of six, eight, four and four, respectively.

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