Observation of B^{+}→pΛ[over ¯]π^{+}π^{-} at Belle
Chen, P.; Wang, M.-Z.; Aihara, H.; Bakich, A. M.; Balagura, V.; Bhardwaj, V.; Bischofberger, M.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M.-C.; Chang, P.; Chen, A.; Cheon, B. G.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Han, B.-Y.; Hara, T.; Hayashii, H.; Hoshi, Y.; Hou, W.-S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwasaki, Y.; Kang, J. H.; Katayama, N.; Kawai, H.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, Y. I.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Križan, P.; Krokovny, P.; Kwon, Y.-J.; Kyeong, S.-H.; Lee, M. J.; Lee, S.-H.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; Matyja, A.; Mconie, S.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nakano, E.; Nakao, M.; Nishida, S.; Ogawa, S.; Ohshima, T.; Okuno, S.; Pakhlova, G.; Park, C. W.; Park, H. K.; Peak, L. S.; Pestotnik, R.; Peters, M.; Petrič, M.; Piilonen, L. E.; Poluektov, A.; Reisert, B.; Sahoo, H.; Sakai, Y.; Schneider, O.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shen, C. P.; Shiu, J.-G.; Simon, F.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Tsuboyama, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Wei, J.-T.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.
2009

Abstract

We study charmless B+ meson decays to the p Lambda pi(+)pi(-) final state using a 605 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. There are significant signals found with the p Lambda mass peaking near threshold. The observed branching fraction for nonresonant B+-> p Lambda pi(+)pi(-) is (5.92(-0.84)(+0.88)(stat)+/- 0.69(syst))x10(-6) with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+-> p Lambda rho(0) with a branching fraction of (4.78(-0.64)(+0.67)(stat)+/- 0.60(syst))x10(-6) and a significance of 9.5 standard deviations, and find a hint of a B+-> p Lambda f(2)(1270) signal. No other intermediate three-body decay is found in this study.

Details

Title Observation of B^{+}→pΛ[over ¯]π^{+}π^{-} at Belle
Author(s) Chen, P. ; Wang, M.-Z. ; Aihara, H. ; Bakich, A. M. ; Balagura, V. ; Bhardwaj, V. ; Bischofberger, M. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, M.-C. ; Chang, P. ; Chen, A. ; Cheon, B. G. ; Cho, I.-S. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Eidelman, S. ; Gabyshev, N. ; Goldenzweig, P. ; Golob, B. ; Han, B.-Y. ; Hara, T. ; Hayashii, H. ; Hoshi, Y. ; Hou, W.-S. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Itoh, R. ; Iwasaki, Y. ; Kang, J. H. ; Katayama, N. ; Kawai, H. ; Kichimi, H. ; Kim, H. J. ; Kim, H. O. ; Kim, Y. I. ; Kim, Y. J. ; Ko, B. R. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lee, M. J. ; Lee, S.-H. ; Liu, C. ; Liu, Y. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; Mconie, S. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Nakano, E. ; Nakao, M. ; Nishida, S. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Pakhlova, G. ; Park, C. W. ; Park, H. K. ; Peak, L. S. ; Pestotnik, R. ; Peters, M. ; Petrič, M. ; Piilonen, L. E. ; Poluektov, A. ; Reisert, B. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shebalin, V. ; Shen, C. P. ; Shiu, J.-G. ; Simon, F. ; Smerkol, P. ; Sokolov, A. ; Solovieva, E. ; Starič, M. ; Sumiyoshi, T. ; Teramoto, Y. ; Trabelsi, K. ; Tsuboyama, T. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Varner, G. ; Varvell, K. E. ; Vinokurova, A. ; Wang, C. H. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Wei, J.-T. ; Won, E. ; Yabsley, B. D. ; Yamashita, Y. ; Yuan, C. Z. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A.
Published in Physical Review D
Volume 80
Issue 11
Pages 111103(R)
Date 2009
ISSN 1550-2368
Keywords
DOI https://doi.org/10.1103/PhysRevD.80.111103
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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