Abstract
We report the observation of B0 decays to the K+π-π0 final state using a data sample of 78 fb-1 collected by the Belle detector at the KEKB e+e- collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6-4.3+4.2±3.0)×10-6. We also search for B decays to intermediate two-body states with the same K+π-π0 final state. Significant B signals are observed in the ρ(770)-K+ and K*(892)+π- channels, with branching fractions of (15.1-3.3-1.5-2.1+3.4+1.4+2.0)×10-6 and (14.8-4.4-1.0-0.9+4.6+1.5+2.4) ×10-6, respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No CP asymmetry is found in the inclusive K+π-π0 or ρ-K+ modes, and we set 90% confidence level bounds on the asymmetry of -0.12<ACP<0.26 and -0.18<ACP<0.64, respectively.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 148-158 |
| Number of pages | 11 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 599 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Oct 14 2004 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Observation of the decays B0 → K+π -π0 and B0 → ρ-K +. / Chang, P.; Abe, K.; Abe, K.; Abe, T.; Aihara, H.; Asano, Y.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bahinipati, S.; Bakich, A. M.; Ban, Y.; Bay, A.; Bedny, I.; Bitenc, U.; Bizjak, I.; Bondar, A.; Bozek, A.; Bracko, M.; Brodzicka, J.; Browder, T. E.; Chang, M. C.; Chao, Y.; Cheon, B. G.; Chistov, R.; Choi, S. K.; Choi, Y.; Cole, S.; Danilov, M.; Dash, M.; Dong, L. Y.; Drutskoy, A.; Eidelman, S.; Eiges, V.; Enari, Y.; Fang, F.; Fratina, S.; Gabyshev, N.; Garmash, A.; Gershon, T.; Gokhroo, G.; Golob, B.; Guo, R.; Hastings, N. C.; Hayashii, H.; Hazumi, M.; Higuchi, T.; Hinz, L.; Hokuue, T.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Huang, H. C.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, H.; Iwasaki, M.; Iwasaki, Y.; Kang, J. H.; Kang, J. S.; Kataoka, S. U.; Katayama, N.; Kawai, H.; Kawasaki, T.; Khan, H. R.; Kichimi, H.; Kim, H. J.; Kim, J. H.; Kim, S. K.; Kim, T. H.; Koppenburg, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuzmin, A.; Kwon, Y. J.; Lee, S. E.; Lesiak, T.; Li, J.; Lin, S. W.; MacNaughton, J.; Majumder, G.; Mandl, F.; Marlow, D.; Matsumoto, T.; Matyja, A.; Mitaroff, W.; Miyake, H.; Miyata, H.; Mizuk, R.; Mohapatra, D.; Mori, T.; Nagamine, T.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Okabe, T.; Okuno, S.; Olsen, S. L.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Park, H.; Parslow, N.; Peak, L. S.; Piilonen, L. E.; Poluektov, A.; Root, N.; Rozanska, M.; Sagawa, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Semenov, S.; Senyo, K.; Sevior, M. E.; Shibuya, H.; Sidorov, V.; Somov, A.; Stamen, R.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Tajima, O.; Takasaki, F.; Tamai, K.; Tamura, N.; Tanaka, M.; Teramoto, Y.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K. E.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Watanabe, M.; Yabsley, B. D.; Yamada, Y.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Ying, J.; Zhang, C. C.; Zhang, J.; Zhang, Z. P.; Žontar, D.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 599, No. 3-4, 14.10.2004, p. 148-158.Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Observation of the decays B0 → K+π -π0 and B0 → ρ-K +
AU - Chang, P.
AU - Abe, K.
AU - Abe, K.
AU - Abe, T.
AU - Aihara, H.
AU - Asano, Y.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Aziz, T.
AU - Bahinipati, S.
AU - Bakich, A. M.
AU - Ban, Y.
AU - Bay, A.
AU - Bedny, I.
AU - Bitenc, U.
AU - Bizjak, I.
AU - Bondar, A.
AU - Bozek, A.
AU - Bracko, M.
AU - Brodzicka, J.
AU - Browder, T. E.
AU - Chang, M. C.
AU - Chao, Y.
AU - Cheon, B. G.
AU - Chistov, R.
AU - Choi, S. K.
AU - Choi, Y.
AU - Cole, S.
AU - Danilov, M.
AU - Dash, M.
AU - Dong, L. Y.
AU - Drutskoy, A.
AU - Eidelman, S.
AU - Eiges, V.
AU - Enari, Y.
AU - Fang, F.
AU - Fratina, S.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Gershon, T.
AU - Gokhroo, G.
AU - Golob, B.
AU - Guo, R.
AU - Hastings, N. C.
AU - Hayashii, H.
AU - Hazumi, M.
AU - Higuchi, T.
AU - Hinz, L.
AU - Hokuue, T.
AU - Hoshi, Y.
AU - Hou, W. S.
AU - Hsiung, Y. B.
AU - Huang, H. C.
AU - Inami, K.
AU - Ishikawa, A.
AU - Itoh, R.
AU - Iwasaki, H.
AU - Iwasaki, M.
AU - Iwasaki, Y.
AU - Kang, J. H.
AU - Kang, J. S.
AU - Kataoka, S. U.
AU - Katayama, N.
AU - Kawai, H.
AU - Kawasaki, T.
AU - Khan, H. R.
AU - Kichimi, H.
AU - Kim, H. J.
AU - Kim, J. H.
AU - Kim, S. K.
AU - Kim, T. H.
AU - Koppenburg, P.
AU - Korpar, S.
AU - Križan, P.
AU - Krokovny, P.
AU - Kuzmin, A.
AU - Kwon, Y. J.
AU - Lee, S. E.
AU - Lesiak, T.
AU - Li, J.
AU - Lin, S. W.
AU - MacNaughton, J.
AU - Majumder, G.
AU - Mandl, F.
AU - Marlow, D.
AU - Matsumoto, T.
AU - Matyja, A.
AU - Mitaroff, W.
AU - Miyake, H.
AU - Miyata, H.
AU - Mizuk, R.
AU - Mohapatra, D.
AU - Mori, T.
AU - Nagamine, T.
AU - Nagasaka, Y.
AU - Nakano, E.
AU - Nakao, M.
AU - Nakazawa, H.
AU - Natkaniec, Z.
AU - Nishida, S.
AU - Nitoh, O.
AU - Ogawa, S.
AU - Okabe, T.
AU - Okuno, S.
AU - Olsen, S. L.
AU - Ostrowicz, W.
AU - Ozaki, H.
AU - Pakhlov, P.
AU - Park, H.
AU - Parslow, N.
AU - Peak, L. S.
AU - Piilonen, L. E.
AU - Poluektov, A.
AU - Root, N.
AU - Rozanska, M.
AU - Sagawa, H.
AU - Sakai, Y.
AU - Schneider, O.
AU - Schümann, J.
AU - Semenov, S.
AU - Senyo, K.
AU - Sevior, M. E.
AU - Shibuya, H.
AU - Sidorov, V.
AU - Somov, A.
AU - Stamen, R.
AU - Stanič, S.
AU - Starič, M.
AU - Sumisawa, K.
AU - Sumiyoshi, T.
AU - Suzuki, S.
AU - Tajima, O.
AU - Takasaki, F.
AU - Tamai, K.
AU - Tamura, N.
AU - Tanaka, M.
AU - Teramoto, Y.
AU - Tsukamoto, T.
AU - Uehara, S.
AU - Ueno, K.
AU - Uglov, T.
AU - Unno, Y.
AU - Uno, S.
AU - Varner, G.
AU - Varvell, K. E.
AU - Villa, S.
AU - Wang, C. C.
AU - Wang, C. H.
AU - Wang, M. Z.
AU - Watanabe, M.
AU - Yabsley, B. D.
AU - Yamada, Y.
AU - Yamaguchi, A.
AU - Yamashita, Y.
AU - Yamauchi, M.
AU - Ying, J.
AU - Zhang, C. C.
AU - Zhang, J.
AU - Zhang, Z. P.
AU - Žontar, D.
N1 - Funding Information: We wish to thank the KEKB accelerator group for the excellent operation of the KEKB accelerator. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.
PY - 2004/10/14
Y1 - 2004/10/14
N2 - We report the observation of B0 decays to the K+π-π0 final state using a data sample of 78 fb-1 collected by the Belle detector at the KEKB e+e- collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6-4.3+4.2±3.0)×10-6. We also search for B decays to intermediate two-body states with the same K+π-π0 final state. Significant B signals are observed in the ρ(770)-K+ and K*(892)+π- channels, with branching fractions of (15.1-3.3-1.5-2.1+3.4+1.4+2.0)×10-6 and (14.8-4.4-1.0-0.9+4.6+1.5+2.4) ×10-6, respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No CP asymmetry is found in the inclusive K+π-π0 or ρ-K+ modes, and we set 90% confidence level bounds on the asymmetry of -0.12<ACP<0.26 and -0.18<ACP<0.64, respectively.
AB - We report the observation of B0 decays to the K+π-π0 final state using a data sample of 78 fb-1 collected by the Belle detector at the KEKB e+e- collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6-4.3+4.2±3.0)×10-6. We also search for B decays to intermediate two-body states with the same K+π-π0 final state. Significant B signals are observed in the ρ(770)-K+ and K*(892)+π- channels, with branching fractions of (15.1-3.3-1.5-2.1+3.4+1.4+2.0)×10-6 and (14.8-4.4-1.0-0.9+4.6+1.5+2.4) ×10-6, respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No CP asymmetry is found in the inclusive K+π-π0 or ρ-K+ modes, and we set 90% confidence level bounds on the asymmetry of -0.12<ACP<0.26 and -0.18<ACP<0.64, respectively.
UR - http://www.scopus.com/inward/record.url?scp=4544376081&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4544376081&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2004.07.063
DO - 10.1016/j.physletb.2004.07.063
M3 - Article
AN - SCOPUS:4544376081
VL - 599
SP - 148
EP - 158
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3-4
ER -