Search for a Low Mass Particle Decaying into μ^{+}μ^{-} in B^{0}→K^{*0}X and B^{0}→ρ^{0}X at Belle
Hyun, H.; Park, H.; Kim, H.; Park, H.; Aihara, H.; Arinstein, K.; Aushev, T.; Bakich, A.; Barberio, E.; Bay, A.; Belous, K.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Chang, M.-C.; Chang, P.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Golob, B.; Ha, H.; Hara, T.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.; Inami, K.; Iwasaki, Y.; Joshi, N.; Kah, D.; Kang, J.; Kapusta, P.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, H.; Kim, J.; Kim, M.; Ko, B.; Kodyš, P.; Križan, P.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J.; Lee, S.-H.; Li, J.; Liventsev, D.; Louvot, R.; Matyja, A.; Mconie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G.; Nakano, E.; Nakazawa, H.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ohshima, T.; Okuno, S.; Olsen, S.; Palka, H.; Park, C.; Pestotnik, R.; Petrič, M.; Piilonen, L.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Sevior, M.; Shapkin, M.; Shiu, J.-G.; Shwartz, B.; Singh, J.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Suzuki, S.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K.; Vervink, K.; Wang, C.; Wang, M.-Z.; Wang, P.; Wang, X.; Wedd, R.; Won, E.; Yabsley, B.; Yamashita, Y.; Zhang, Z.; Zhilich, V.; Zyukova, O.; Belle Collaboration
2010

Abstract

We search for dimuon decays of a low mass particle in the decays B-0 -> K*X-0 and B-0 -> rho X-0 using a data sample of 657 x 10(6)B (B) over bar events collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. We find no evidence for such a particle in the mass range from 212 MeV/c(2) to 300 MeV/c(2) for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214: 3 MeV/c(2) reported by the HyperCP experiment, and obtain upper limits on the products B(B-0 -> K*X-0) x B(X mu(+)mu(-)) < 2.26(2.27) x 10(-8) and B(B-0 -> rho X-0) x B(X -> mu(+)mu(-)) < 1.73(1.73) x 10(-8) at 90% C.L. for a scalar (vector) X particle.

Details

Title Search for a Low Mass Particle Decaying into μ^{+}μ^{-} in B^{0}→K^{*0}X and B^{0}→ρ^{0}X at Belle
Author(s) Hyun, H. ; Park, H. ; Kim, H. ; Park, H. ; Aihara, H. ; Arinstein, K. ; Aushev, T. ; Bakich, A. ; Barberio, E. ; Bay, A. ; Belous, K. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Chang, M.-C. ; Chang, P. ; Chao, Y. ; Chen, A. ; Chen, P. ; Cheon, B. ; Cho, I.-S. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Drutskoy, A. ; Eidelman, S. ; Gabyshev, N. ; Golob, B. ; Ha, H. ; Hara, T. ; Horii, Y. ; Hoshi, Y. ; Hou, W.-S. ; Hsiung, Y. ; Inami, K. ; Iwasaki, Y. ; Joshi, N. ; Kah, D. ; Kang, J. ; Kapusta, P. ; Kawasaki, T. ; Kichimi, H. ; Kiesling, C. ; Kim, H. ; Kim, J. ; Kim, M. ; Ko, B. ; Kodyš, P. ; Križan, P. ; Kuzmin, A. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lange, J. ; Lee, S.-H. ; Li, J. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; Mconie, S. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mohanty, G. ; Nakano, E. ; Nakazawa, H. ; Nishida, S. ; Nishimura, K. ; Nitoh, O. ; Ohshima, T. ; Okuno, S. ; Olsen, S. ; Palka, H. ; Park, C. ; Pestotnik, R. ; Petrič, M. ; Piilonen, L. ; Ryu, S. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Sevior, M. ; Shapkin, M. ; Shiu, J.-G. ; Shwartz, B. ; Singh, J. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Suzuki, S. ; Teramoto, Y. ; Trabelsi, K. ; Uehara, S. ; Unno, Y. ; Uno, S. ; Varner, G. ; Varvell, K. ; Vervink, K. ; Wang, C. ; Wang, M.-Z. ; Wang, P. ; Wang, X. ; Wedd, R. ; Won, E. ; Yabsley, B. ; Yamashita, Y. ; Zhang, Z. ; Zhilich, V. ; Zyukova, O. ; Belle Collaboration
Published in Physical Review Letters
Volume 105
Issue 9
Pages 091801
Date 2010
ISSN 1079-7114
Keywords
DOI https://doi.org/10.1103/PhysRevLett.105.091801
Other identifier(s) View record in Web of Science
Laboratories LPHE
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2010-11-05

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