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Title:
Upper limits for charm hadron decays to two muons plus hadrons
Authors:
Kodama, K.; Ushida, N.; Mokhtarani, A.; Paolone, V. S.; Volk, J. T.; Wilcox, J. O.; Yager, P. M.; Edelstein, R. M.; Freyberger, A. P.; Gibaut, D. B.; Lipton, R. J.; Nichols, W. R.; Potter, D. M.; Russ, J. S.; Zhang, C.; Zhang, Y.; Jang, H. I.; Kim, J. Y.; Kim, T. I.; Lim, I. T.; Pac, M. Y.; Baller, B. R.; Stefanski, R. J.; Nakazawa, K.; Chung, K. S.; Chung, S. H.; Kim, D. C.; Park, I. G.; Park, M. S.; Song, J. S.; Yoon, C. S.; Aryal, M.; Reay, N. W.; Sidwell, R. A.; Stanton, N. R.; Chikawa, M.; Abe, T.; Fujii, T.; Fujioka, G.; Fujiwara, K.; Fukushima, H.; Hara, T.; Takahashi, Y.; Taruma, K.; Tsuzuki, Y.; Yokoyama, C.; Chang, S. D.; Cheon, B. G.; Cho, J. H.; Kang, J. S.; Kim, C. O.; Kim, K. Y.; Kim, T. Y.; Lee, J. C.; Lee, S. B.; Lim, G. Y.; Nam, S. W.; Shin, T. S.; Sim, K. S.; Woo, J. K.; Isokane, Y.; Tsuneoka, Y.; Aoki, S.; Gauthier, A.; Hoshino, K.; Kitamura, H.; Kobayashi, M.; Komatsu, M.; Miyanishi, M.; Nakamura, K.; Nakamura, M.; Nakamura, Y.; Nakanishi, S.; Niu, K.; Niwa, K.; Nomura, M.; Okada, K.; Tajima, H.; Toshitou, T.; Yoshida, S.; Dunlea, J. M.; Frederiksen, S. G.; Kuramata, S.; Lundberg, B. G.; Oleynik, G. A.; Reibel, K.; Moriyama, K.; Shibata, H.; Kalbfleisch, G. R.; Skubic, P.; Snow, J. M.; Willis, S. E.; Kusumoto, O.; Nakamura, K.; Okusawa, T.; Teranaka, M.; Tominaga, T.; Yoshida, T.; Yuuki, H.; Okabe, H.; Yokota, J.; Kazuno, M.; Koya, T.; Niu, E.; Ogawa, S.; Shibuya, H.; Watanabe, S.; Yasuda, N.; Kamiya, M.; Sato, Y.; Tezuka, I.; Yamaki, M.; Bahk, S. Y.; Kim, S. K.
Affiliation:
AA(), AB(), AC(University of California (Davis) Davis, CA 95616, USA), AD(University of California (Davis) Davis, CA 95616, USA), AE(University of California (Davis) Davis, CA 95616, USA), AF(University of California (Davis) Davis, CA 95616, USA), AG(University of California (Davis) Davis, CA 95616, USA), AH(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AI(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AJ(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AK(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AL(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AM(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AN(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AO(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AP(Carnegie-Mellon University Pittsburgh, PA 15213, USA), AQ(Chonnam National University Kwangju 500-757, South Korea), AR(Chonnam National University Kwangju 500-757, South Korea), AS(Chonnam National University Kwangju 500-757, South Korea), AT(Chonnam National University Kwangju 500-757, South Korea), AU(Chonnam National University Kwangju 500-757, South Korea), AV(Fermi National Accelerator Laboratory Batavia, IL 60510, USA), AW(Fermi National Accelerator Laboratory Batavia, IL 60510, USA), AX(Gifu University Gifu 501-11, Japan), AY(Gyeongsang National University Jinju 660-300, South Korea), AZ(Gyeongsang National University Jinju 660-300, South Korea), BA(Gyeongsang National University Jinju 660-300, South Korea), BB(Gyeongsang National University Jinju 660-300, South Korea), BC(Gyeongsang National University Jinju 660-300, South Korea), BD(Gyeongsang National University Jinju 660-300, South Korea), BE(Gyeongsang National University Jinju 660-300, South Korea), BF(Kansas State University Manhattan, KS 66506, USA), BG(Kansas State University Manhattan, KS 66506, USA), BH(Kansas State University Manhattan, KS 66506, USA), BI(Kansas State University Manhattan, KS 66506, USA), BJ(Kinki University Higashi-Osaka 577, Japan), BK(Kobe University Kobe 657, Japan), BL(Kobe University Kobe 657, Japan), BM(Kobe University Kobe 657, Japan), BN(Kobe University Kobe 657, Japan), BO(Kobe University Kobe 657, Japan), BP(Kobe University Kobe 657, Japan), BQ(Kobe University Kobe 657, Japan), BR(Kobe University Kobe 657, Japan), BS(Kobe University Kobe 657, Japan), BT(Kobe University Kobe 657, Japan), BU(Korea University Seoul 136-701, South Korea), BV(Korea University Seoul 136-701, South Korea), BW(Korea University Seoul 136-701, South Korea), BX(Korea University Seoul 136-701, South Korea), BY(Korea University Seoul 136-701, South Korea), BZ(Korea University Seoul 136-701, South Korea), CA(Korea University Seoul 136-701, South Korea), CB(Korea University Seoul 136-701, South Korea), CC(Korea University Seoul 136-701, South Korea), CD(Korea University Seoul 136-701, South Korea), CE(Korea University Seoul 136-701, South Korea), CF(Korea University Seoul 136-701, South Korea), CG(Korea University Seoul 136-701, South Korea), CH(Korea University Seoul 136-701, South Korea), CI(Nagoya Institute of Technology Nagoya 466, Japan), CJ(Nagoya Institute of Technology Nagoya 466, Japan), CK(Nagoya University Nagoya 464, Japan), CL(Nagoya University Nagoya 464, Japan), CM(Nagoya University Nagoya 464, Japan), CN(Nagoya University Nagoya 464, Japan), CO(Nagoya University Nagoya 464, Japan), CP(Nagoya University Nagoya 464, Japan), CQ(Nagoya University Nagoya 464, Japan), CR(Nagoya University Nagoya 464, Japan), CS(Nagoya University Nagoya 464, Japan), CT(Nagoya University Nagoya 464, Japan), CU(Nagoya University Nagoya 464, Japan), CV(Nagoya University Nagoya 464, Japan), CW(Nagoya University Nagoya 464, Japan), CX(Nagoya University Nagoya 464, Japan), CY(Nagoya University Nagoya 464, Japan), CZ(Nagoya University Nagoya 464, Japan), DA(Nagoya University Nagoya 464, Japan), DB(Nagoya University Nagoya 464, Japan), DC(The Ohio State University Columbus, OH 43210, USA), DD(The Ohio State University Columbus, OH 43210, USA), DE(The Ohio State University Columbus, OH 43210, USA), DF(The Ohio State University Columbus, OH 43210, USA), DG(The Ohio State University Columbus, OH 43210, USA), DH(The Ohio State University Columbus, OH 43210, USA), DI(Okayama University Okayama 700, Japan), DJ(Okayama University Okayama 700, Japan), DK(University of Oklahoma Norman, OK 73019, USA), DL(University of Oklahoma Norman, OK 73019, USA), DM(University of Oklahoma Norman, OK 73019, USA), DN(University of Oklahoma Norman, OK 73019, USA), DO(Osaka City University Osaka 558, Japan), DP(Osaka City University Osaka 558, Japan), DQ(Osaka City University Osaka 558, Japan), DR(Osaka City University Osaka 558, Japan), DS(Osaka City University Osaka 558, Japan), DT(Osaka City University Osaka 558, Japan), DU(Osaka City University Osaka 558, Japan), DV(Science Education Institute of Osaka Prefecture Osaka 558, Japan), DW(Science Education Institute of Osaka Prefecture Osaka 558, Japan), DX(Toho University Funabashi 274, Japan), DY(Toho University Funabashi 274, Japan), DZ(Toho University Funabashi 274, Japan), EA(Toho University Funabashi 274, Japan), EB(Toho University Funabashi 274, Japan), EC(Toho University Funabashi 274, Japan), ED(Toho University Funabashi 274, Japan), EE(Utsunomiya University Utsunomiya 321, Japan), EF(Utsunomiya University Utsunomiya 321, Japan), EG(Utsunomiya University Utsunomiya 321, Japan), EH(Utsunomiya University Utsunomiya 321, Japan), EI(Wonkwang University Iri 570-749, South Korea), EJ(Wonkwang University Iri 570-749, South Korea)
Publication:
Physics Letters B, v. 345, p. 85-92
Publication Date:
02/1995
Origin:
ELSEVIER
Abstract Copyright:
(c) 1995 Elsevier Science B.V. All rights reserved.
Bibliographic Code:
1995PhLB..345...85K

Abstract

A search for charm hadron decays into two muons plus one or more hadrons has been carried out using a hybrid emulsion spectrometer. This technique is sensitive to modes with missing neutrals, e.g. π0μ+μ- and ρ+/-μ+μ-, as well as to constrained modes having visible invariant masses equal to those of charm states. No evidence for any such decays has been found, which allows upper limits at the 90% confidence level as low as 1.8 × 10-4 to be placed on the branching fractions for charm-changing neutral-current and lepton-number violating decay modes.
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