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Search for a Low Mass Particle Decaying into mu(+)mu(-) in B-0 -> K*X-0 and B-0 ->rho X-0 at Belle
- Authors
- Hyun, H. J.; Park, H. K.; Kim, H. O.; Park, H.; Aihara, H.; Arinstein, K.; Aushev, T.; Bakich, A. M.; Barberio, E.; Bay, A.; Belous, K.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Chang, M. -C.; Chang, P.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; 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. B.; Inami, K.; Iwasaki, Y.; Joshi, N. J.; Kah, D. H.; Kang, J. H.; Kapusta, P.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, H. J.; Kim, J. H.; Kim, M. J.; Ko, B. R.; Kodys, P.; Krizan, P.; Kuzmin, A.; Kwon, Y. -J.; Kyeong, S. -H.; Lange, J. S.; Lee, S. -H.; Li, J.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Nakano, E.; Nakazawa, H.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Palka, H.; Park, C. W.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Sevior, M. E.; Shapkin, M.; Shiu, J. -G.; Shwartz, B.; Singh, J. B.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Suzuki, S.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Zhang, Z. P.; Zhilich, V.; Zyukova, O.
- Issue Date
- 25-8월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.105, no.9
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 105
- Number
- 9
- ISSN
- 0031-9007
- 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.
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