Study of intermediate two-body decays in over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+

H. O. Kim, H. Kichimi, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, I. Bedny, U. Bitenc, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, I. S. ChoY. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, N. Gabyshev, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. J. Kim, Y. I. Kim, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, T. Lesiak, S. W. Lin, D. Liventsev, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, C. W. Park, H. Park, H. K. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, J. G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

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Abstract

We present results of a detailed study of the three-body over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+ decay. A significant enhancement of signal events is observed in the over(p, ̄) π+ invariant mass distribution near 1.5 GeV / c2 that is consistent with the presence of an intermediate baryonic resonance over(N, ̄)0, where over(N, ̄)0 is the over(N, ̄) (1440)0 P11 or over(N, ̄) (1535)0 S11 state, or an admixture of the two states. We measure the product B (over(B, ̄)0 → Σc (2455)0 over(N, ̄)0) × B (over(N, ̄)0 → over(p, ̄) π+) = (0.80 ± 0.15 (stat .) ± 0.14 (syst .) ± 0.21) × 10-4, where the last error is due to the uncertainty in B (Λc+ → p K- π+). The significance of the signal is 6.1 standard deviations. This analysis is based on a data sample of 357 fb-1, accumulated at the Υ{hooked} (4 S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider.

Original languageEnglish
Pages (from-to)287-293
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume669
Issue number5
DOIs
Publication statusPublished - 2008 Nov 27

Bibliographical note

Funding Information:
We thank the KEKB group for excellent operation of the accelerator, the KEK cryogenics group for efficient solenoid operations, and the KEK computer group and the NII for valuable computing and Super-SINET network support. We acknowledge support from MEXT and JSPS (Japan); ARC and DEST (Australia); NSFC (China); DST (India); MOEHRD, KOSEF and KRF (Korea); KBN (Poland); MES and RFAAE (Russia); ARRS (Slovenia); SNSF (Switzerland); NSC and MOE (Taiwan); and DOE (USA).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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