首次观测到$\Upsilon(1S)$和$\Upsilon(2S)$遍举衰变到轻强子
高能物理 - 实验
2012-08-16 v2 高能物理 - 唯象学
摘要
利用Belle探测器收集的1.02亿个和1.58亿个事件样本，我们研究了这两个底偶素共振态到三体末态、和，以及到两体矢量-张量（、、和）和轴矢量-赝标量（、和）对的遍举强子衰变。在、、、和、衰变模式中首次观测到信号。确定了所有过程的分支比，同时对统计显著性小于的模式建立了分支比的90%置信水平上限。利用和衰变到相同末态的分支比之比来检验OZI抑制的底偶素衰变的微扰QCD预言。
引用
@article{arxiv.1205.1246,
title = {First observation of exclusive $\Upsilon(1S)$ and $\Upsilon(2S)$ decays into light hadrons},
author = {Belle Collaboration and C. P. Shen and C. Z. Yuan and T. Iijima and I. Adachi and H. Aihara and D. M. Asner and T. Aushev and A. M. Bakich and A. Bay and K. Belous and B. Bhuyan and M. Bischofberger and G. Bonvicini and A. Bozek and M. Bračko and T. E. Browder and M. -C. Chang and P. Chang and A. Chen and P. Chen and B. G. Cheon and K. Chilikin and R. Chistov and I. -S. Cho and K. Cho and S. -K. Choi and Y. Choi and J. Dalseno and Z. Doležal and Z. Drásal and S. Eidelman and J. E. Fast and V. Gaur and N. Gabyshev and Y. M. Goh and B. Golob and J. Haba and H. Hayashii and Y. Horii and Y. Hoshi and W. -S. Hou and Y. B. Hsiung and H. J. Hyun and K. Inami and A. Ishikawa and R. Itoh and M. Iwabuchi and Y. Iwasaki and T. Iwashita and T. Julius and J. H. Kang and T. Kawasaki and C. Kiesling and B. H. Kim and H. O. Kim and J. B. Kim and J. H. Kim and M. J. Kim and Y. J. Kim and K. Kinoshita and B. R. Ko and S. Koblitz and P. Kodyš and S. Korpar and R. T. Kouzes and P. Križan and P. Krokovny and R. Kumar and T. Kumita and A. Kuzmin and Y. -J. Kwon and S. -H. Lee and J. Li and Y. Li and J. Libby and C. Liu and Y. Liu and Z. Q. Liu and R. Louvot and S. McOnie and K. Miyabayashi and H. Miyata and G. B. Mohanty and D. Mohapatra and A. Moll and N. Muramatsu and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and K. Nishimura and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and S. L. Olsen and P. Pakhlov and G. Pakhlova and C. W. Park and H. Park and H. K. Park and T. K. Pedlar and R. Pestotnik and M. Petrič and L. E. Piilonen and M. Ritter and H. Sahoo and Y. Sakai and D. Santel and T. Sanuki and Y. Sato and O. Schneider and C. Schwanda and K. Senyo and O. Seon and M. E. Sevior and M. Shapkin and V. Shebalin and T. -A. Shibata and J. -G. Shiu and B. Shwartz and A. Sibidanov and F. Simon and P. Smerkol and Y. -S. Sohn and A. Sokolov and E. Solovieva and M. Starič and M. Sumihama and T. Sumiyoshi and G. Tatishvili and Y. Teramoto and M. Uchida and S. Uehara and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and P. Vanhoefer and G. Varner and C. H. Wang and P. Wang and X. L. Wang and M. Watanabe and Y. Watanabe and K. M. Williams and E. Won and B. D. Yabsley and Y. Yamashita and C. C. Zhang and Z. P. Zhang and V. Zhilich and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:1205.1246},
year = {2012}
}
备注
7 pages, 5 figures, 1 table, accepted for publication as a Rapid Communication in Physical Review D