Belle 实验对 gamma gamma* --> pi0 跃迁形状因子的测量
高能物理 - 实验
2012-11-15 v2
摘要
我们利用 Belle 探测器在 KEKB 非对称能量 e+e- 对撞机上记录的 759 fb^{-1} 数据样本，报告了对 gamma gamma* --> pi0 过程的测量结果。在运动学区域 4 GeV^2 <~ Q^2 <~ 40 GeV^2 内测量了 介子跃迁形状因子 ，其中 为虚光子的不变质量平方。所测得的 值在 ~= 9 GeV^2 以下与先前的测量结果吻合良好，但在更高的 区域并未表现出另一项近期测量中所看到的快速增长，该近期测量值超出渐近 QCD 预期高达 50%。
引用
@article{arxiv.1205.3249,
title = {Measurement of gamma gamma* --> pi0 transition form factor at Belle},
author = {The Belle Collaboration and S. Uehara and Y. Watanabe and H. Nakazawa and I. Adachi and H. Aihara and D. M. Asner and T. Aushev and A. M. Bakich and K. Belous and V. Bhardwaj and B. Bhuyan and M. Bischofberger and A. Bondar and G. Bonvicini and A. Bozek and M. Bracko and T. E. Browder and M. -C. Chang and A. Chen and P. Chen and B. G. Cheon and K. Chilikin and I. -S. Cho and K. Cho and Y. Choi and J. Dalseno and Z. Dolezal and Z. Drasal and S. Eidelman and D. Epifanov and J. E. Fast and M. Feindt and V. Gaur and N. Gabyshev and Y. M. Goh and B. Golob and J. Haba and K. Hayasaka and H. Hayashii and Y. Horii and Y. Hoshi and W. -S. Hou and H. J. Hyun and T. Iijima 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 H. J. Kim 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 B. R. Ko and S. Koblitz and P. Kodys and S. Korpar and R. T. Kouzes and P. Krizan and P. Krokovny 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. -L. Lim and C. Liu and Y. Liu and Z. Q. Liu and D. Liventsev and R. Louvot and D. Matvienko and K. Miyabayashi and H. Miyata and Y. Miyazaki and G. B. Mohanty and A. Moll and T. Mori and N. Muramatsu and Y. Nagasaka 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 Y. Onuki and P. Pakhlov and G. Pakhlova and H. K. Park and K. S. Park and T. K. Pedlar and R. Pestotnik and M. Petric and L. E. Piilonen and K. Prothmann and M. Rohrken and S. Ryu and H. Sahoo and K. Sakai and Y. Sakai and T. Sanuki and Y. Sato and V. Savinov and O. Schneider and C. Schwanda and R. Seidl and K. Senyo and O. Seon and M. E. Sevior and M. Shapkin and C. P. Shen and T. -A. Shibata and J. -G. Shiu and B. Shwartz and A. Sibidanov and F. Simon and J. B. Singh and P. Smerkol and Y. -S. Sohn and A. Sokolov and E. Solovieva and M. Staric and T. Sumiyoshi and Y. Teramoto and K. Trabelsi and T. Tsuboyama and M. Uchida and Y. Unno and S. Uno and Y. Usov and P. Vanhoefer and G. Varner and A. Vinokurova and V. Vorobyev and C. H. Wang and P. Wang and M. Watanabe and K. M. Williams and E. Won and Y. Yamashita and C. Z. Yuan and C. C. Zhang and Z. P. Zhang and V. Zhilich and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:1205.3249},
year = {2012}
}
备注
30 pages, 30 figures, 3 tables