Phys. Rev. D
64,
072001
(2001)
[6 pages]
Measurement of inclusive production of neutral pions from Υ(4S) decays
K. Abe et al. (Belle Collaboration)
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K. Abe1, K. Abe2, I. Adachi1, Byoung Sup Ahn3, H. Aihara4, M. Akatsu5, G. Alimonti6, K. Aoki1, K. Asai7, Y. Asano8, T. Aso9, V. Aulchenko10, T. Aushev11, A. M. Bakich12, E. Banas13, W. Bartel1,14, S. Behari1, P. K. Behera15, D. Beiline10, A. Bondar10, A. Bozek13, T. E. Browder6, B. C. K. Casey6, P. Chang16, Y. Chao16, B. G. Cheon17, S.-K. Choi18, Y. Choi17, Y. Doi1, J. Dragic19, A. Drutskoy11, S. Eidelman10, Y. Enari5, R. Enomoto1,20, F. Fang6, H. Fujii1, C. Fukunaga21, M. Fukushima20, A. Garmash10,1, A. Gordon19, K. Gotow22, H. Guler6, R. Guo23, J. Haba1, H. Hamasaki1, K. Hanagaki24, F. Handa2, K. Hara25, T. Hara25, T. Haruyama1, N. C. Hastings19, K. Hayashi1, H. Hayashii7, M. Hazumi25, E. M. Heenan19, Y. Higasino5, I. Higuchi2, T. Higuchi4, H. Hirano26, T. Hojo25, Y. Hoshi27, W.-S. Hou16, S.-C. Hsu16, H.-C. Huang16, Y.-C. Huang23, S. Ichizawa28, Y. Igarashi1, T. Iijima1, H. Ikeda1, K. Ikeda7, K. Inami5, A. Ishikawa5, H. Ishino28, R. Itoh1, G. Iwai29, H. Iwasaki1, Y. Iwasaki1, D. J. Jackson25, P. Jalocha13, H. K. Jang30, M. Jones6, R. Kagan11, H. Kakuno28, J. Kaneko28, J. H. Kang31, J. S. Kang3, P. Kapusta13, N. Katayama1, H. Kawai32, N. Kawamura33, T. Kawasaki29, K. Kichimi1, D. W. Kim17, Heejong Kim31, H. J. Kim31, Hyunwoo Kim3, S. K. Kim30, K. Kinoshita34, K. Korotushenko24, P. Krokovny10, R. Kulasiri34, S. Kumar35, T. Kuniya36, E. Kurihara32, A. Kuzmin10, Y.-J. Kwon31, J. S. Lange37, M. H. Lee1, S. H. Lee30, H. B. Li38, D. Liventsev11, R.-S. Lu16, A. Manabe1, T. Matsubara4, S. Matsui5, S. Matsumoto39, T. Matsumoto5, Y. Mikami2, K. Misono5, K. Miyabayashi7, H. Miyake25, H. Miyata29, L. C. Moffitt19, G. R. Moloney19, G. F. Moorhead19, S. Mori8, A. Murakami36, T. Nagamine2, Y. Nagasaka40, Y. Nagashima25, T. Nakadaira4, E. Nakano41, M. Nakao1, J. W. Nam17, S. Narita2, Z. Natkaniec13, K. Neichi27, S. Nishida42, O. Nitoh26, S. Noguchi7, T. Nozaki1, S. Ogawa43, T. Ohshima5, Y. Ohshima28, T. Okabe5, T. Okazaki7, S. Okuno44, S. L. Olsen6, W. Ostrowicz13, H. Ozaki1, H. Palka13, C. S. Park30, C. W. Park3, H. Park3, L. S. Peak12, M. Peters6, L. E. Piilonen22, E. Prebys24, J. L. Rodriguez6, N. Root10, M. Rozanska13, K. Rybicki13, J. Ryuko25, H. Sagawa1, Y. Sakai1, H. Sakamoto42, M. Satapathy15, A. Satpathy1,34, S. Schrenk22,34, S. Semenov11, K. Senyo5, M. E. Sevior19, H. Shibuya43, B. Shwartz10, V. Sidorov10, J. B. Singh35, S. Stanič8, A. Sugi5, A. Sugiyama5, K. Sumisawa25, T. Sumiyoshi1, K. Suzuki32, S. Suzuki5, S. Y. Suzuki1, S. K. Swain6, T. Takahashi41, F. Takasaki1, M. Takita25, K. Tamai1, N. Tamura29, J. Tanaka4, M. Tanaka1, Y. Tanaka40, G. N. Taylor19, Y. Teramoto41, M. Tomoto5, T. Tomura4, S. N. Tovey19, K. Trabelsi6, T. Tsuboyama1, Y. Tsujita8, T. Tsukamoto1, S. Uehara1, K. Ueno16, Y. Unno32, S. Uno1, Y. Ushiroda42, Y. Usov10, S. E. Vahsen24, G. Varner6, K. E. Varvell12, C. C. Wang16, C. H. Wang45, M.-Z. Wang16, T. J. Wang38, Y. Watanabe28, E. Won30, B. D. Yabsley1, Y. Yamada1, M. Yamaga2, A. Yamaguchi2, H. Yamamoto6, H. Yamaoka1, Y. Yamaoka1, Y. Yamashita46, M. Yamauchi1, S. Yanaka28, K. Yoshida5, Y. Yusa2, H. Yuta33, C. C. Zhang38, J. Zhang8, Y. Zheng6, V. Zhilich10, and D. Žontar8 (Belle Collaboration)
1High Energy Accelerator Research Organization (KEK), Tsukuba
2Tohoku University, Sendai
3Korea University, Seoul
4University of Tokyo, Tokyo
5Nagoya University, Nagoya
6University of Hawaii, Honolulu, Hawaii
7Nara Women’s University, Nara
8University of Tsukuba, Tsukuba
9Toyama National College of Maritime Technology, Toyama
10Budker Institute of Nuclear Physics, Novosibirsk
11Institute for Theoretical and Experimental Physics, Moscow
12University of Sydney, Sydney NSW
13H. Niewodniczanski Institute of Nuclear Physics, Krakow
14Deutsches Elektronen-Synchrotron, Hamburg
15Utkal University, Bhubaneswer
16National Taiwan University, Taipei
17Sungkyunkwan University, Suwon
18Gyeongsang National University, Chinju
19University of Melbourne, Victoria
20Institute for Cosmic Ray Research, University of Tokyo, Tokyo
21Tokyo Metropolitan University, Tokyo
22Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
23National Kaohsiung Normal University, Kaohsiung
24Princeton University, Princeton, New Jersey 08544
25Osaka University, Osaka
26Tokyo University of Agriculture and Technology, Tokyo
27Tohoku Gakuin University, Tagajo
28Tokyo Institute of Technology, Tokyo
29Niigata University, Niigata
30Seoul National University, Seoul
31Yonsei University, Seoul
32Chiba University, Chiba
33Aomori University, Aomori
34University of Cincinnati, Cincinnati, Ohio 45221
35Panjab University, Chandigarh
36Saga University, Saga
37University of Frankfurt, Frankfurt
38Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
39Chuo University, Tokyo
40Nagasaki Institute of Applied Science, Nagasaki
41Osaka City University, Osaka
42Kyoto University, Kyoto
43Toho University, Funabashi
44Kanagawa University, Yokohama
45National Lien-Ho Institute of Technology, Miao Li
46Nihon Dental College, Niigata
Received 25 March 2001; published 4 September 2001
Using the Belle detector operating at the KEKB e+e- storage ring, we have measured the mean multiplicity and momentum spectrum of neutral pions from the decays of the Υ(4S) resonance. We measure a mean of 4.70±0.04±0.22 neutral pions per Υ(4S) decay.
© 2001 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.64.072001
DOI:
10.1103/PhysRevD.64.072001
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