Observation of B- to pbar Lambda D0 at Belle
High Energy Physics - Experiment
2015-05-30 v1
Abstract
We study B- meson decays to pbar Lambda D(*)0 final states using a sample of 657 * 10^6 B Bbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The observed branching fraction for B- to pbar Lambda D0 is (1.43^ +0.28_-0.25 +- 0.18)*10^-5. with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. Most of the signal events have the pbarLambda mass peaking near threshold. No significant signal is observed for B- to pbar Lambda D*0 and the corresponding upper limit on the branching fraction is 4.8 * 10^-5 at the 90% confidence level.
Cite
@article{arxiv.1108.4271,
title = {Observation of B- to pbar Lambda D0 at Belle},
author = {P. Chen and M. -Z. Wang and I. Adachi and H. Aihara and D. M. Asner and V. Aulchenko and T. Aushev and A. M. Bakich and E. Barberio and K. Belous and B. Bhuyan and A. Bozek and M. Bračko and T. E. Browder and M. -C. Chang and P. Chang and Y. Chao and A. Chen and B. G. Cheon and I. -S. Cho and K. Cho and Y. Choi and J. Dalseno and M. Danilov and Z. Doležal and Z. Drásal and S. Eidelman and J. E. Fast and M. Feindt and V. Gaur and Y. M. Goh and J. Haba and T. Hara and K. Hayasaka and H. Hayashii and Y. Hoshi and W. -S. Hou and Y. B. Hsiung and H. J. Hyun and A. Ishikawa and R. Itoh and M. Iwabuchi and Y. Iwasaki and T. Iwashita and T. Julius and J. H. Kang and P. Kapusta and N. Katayama and T. Kawasaki and H. Kichimi and C. Kiesling and H. O. Kim and J. B. Kim and J. H. Kim and K. T. Kim and M. J. Kim and Y. J. Kim and K. Kinoshita and B. R. Ko and N. Kobayashi and S. Koblitz and P. Križan and T. Kuhr and A. Kuzmin and Y. -J. Kwon and J. S. Lange and S. -H. Lee and J. Li and Y. Li and J. Libby and C. Liu and Y. Liu and D. Liventsev and R. Louvot and D. Matvienko and S. McOnie and H. Miyata and Y. Miyazaki and G. B. Mohanty and Y. Nagasaka and E. Nakano and M. Nakao and Z. Natkaniec and S. Neubauer and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. L. Olsen and Y. Onuki and P. Pakhlov and G. Pakhlova and H. Park and H. K. Park and T. K. Pedlar and R. Pestotnik and M. Peters and M. Petrič and L. E. Piilonen and M. Ritter and M. Röhrken and S. Ryu and H. Sahoo and Y. Sakai and T. Sanuki and O. Schneider and C. Schwanda and K. Senyo and M. E. Sevior and M. Shapkin and C. P. Shen and T. -A. Shibata and J. -G. Shiu and B. Shwartz and F. Simon and J. B. Singh and P. Smerkol and Y. -S. Sohn and E. Solovieva and S. Stanič and M. Starič and M. Sumihama and T. Sumiyoshi and G. Tatishvili and Y. Teramoto and M. Uchida and S. Uehara and Y. Unno and S. Uno and G. Varner and K. E. Varvell and C. H. Wang and X. L. Wang and Y. Watanabe and K. M. Williams and E. Won and B. D. Yabsley and Y. Yamashita and M. Yamauchi and Z. P. Zhang},
journal= {arXiv preprint arXiv:1108.4271},
year = {2015}
}
Comments
6 pages, 4 figures (6 figure files), submitted to Phys.Rev.D