单标记双光子碰撞中π⁰对产生的研究
高能物理 - 实验
2016-02-24 v2
摘要
我们报告了在e⁺e⁻散射中，单标记双光子碰撞γ* γ → π⁰ π⁰的π⁰对产生微分截面的测量结果。该截面在标记光子的不变质量平方的负值Q²高达30 GeV²的范围内测量，运动学范围为：在γ* γ质心系中，总能量0.5 GeV < W < 2.1 GeV，π介子散射角|cos θ*| < 1.0。结果基于KEKB非对称能量e⁺e⁻对撞机上Belle探测器收集的759 fb⁻¹数据样本。首次分别测量了f₀(980)和f₂(1270)的螺旋度为0、-1和-2分量的跃迁形状因子，并与理论计算进行了比较。
引用
@article{arxiv.1508.06757,
title = {Study of $\pi^0$ pair production in single-tag two-photon collisions},
author = {The Belle Collaboration and M. Masuda and S. Uehara and Y. Watanabe and H. Nakazawa and A. Abdesselam and I. Adachi and H. Aihara and S. Al Said and D. M. Asner and H. Atmacan and V. Aulchenko and T. Aushev and V. Babu and I. Badhrees and A. M. Bakich and E. Barberio and P. Behera and B. Bhuyan and J. Biswal and A. Bobrov and G. Bonvicini and A. Bozek and M. Bračko and T. E. Browder and D. Červenkov and V. Chekelian and A. Chen and B. G. Cheon and K. Chilikin and R. Chistov and K. Cho and V. Chobanova and S. -K. Choi and Y. Choi and D. Cinabro and J. Dalseno and M. Danilov and N. Dash and J. Dingfelder and Z. Doležal and Z. Drásal and D. Dutta and S. Eidelman and D. Epifanov and H. Farhat and J. E. Fast and T. Ferber and B. G. Fulsom and V. Gaur and N. Gabyshev and A. Garmash and R. Gillard and R. Glattauer and Y. M. Goh and P. Goldenzweig and B. Golob and J. Haba and K. Hayasaka and H. Hayashii and X. H. He and W. -S. Hou and T. Iijima and K. Inami and A. Ishikawa and R. Itoh and Y. Iwasaki and I. Jaegle and D. Joffe and K. K. Joo and T. Julius and K. H. Kang and E. Kato and T. Kawasaki and D. Y. Kim and J. B. Kim and J. H. Kim and K. T. Kim and M. J. Kim and S. H. Kim and Y. J. Kim and B. R. Ko and S. Korpar and P. Križan and P. Krokovny and T. Kumita and A. Kuzmin and Y. -J. Kwon and J. S. Lange and D. H. Lee and I. S. Lee and C. Li and L. Li and Y. Li and J. Libby and D. Liventsev and P. Lukin and D. Matvienko and K. Miyabayashi and H. Miyata and R. Mizuk and G. B. Mohanty and S. Mohanty and A. Moll and H. K. Moon and T. Mori and R. Mussa and E. Nakano and M. Nakao and T. Nanut and Z. Natkaniec and M. Nayak and N. K. Nisar and S. Nishida and S. Ogawa and P. Pakhlov and G. Pakhlova and B. Pal and C. W. Park and H. Park and T. K. Pedlar and R. Pestotnik and M. Petrič and L. E. Piilonen and J. Rauch and E. Ribežl and M. Ritter and A. Rostomyan and S. Sandilya and L. Santelj and T. Sanuki and Y. Sato and V. Savinov and O. Schneider and G. Schnell and C. Schwanda and Y. Seino and K. Senyo and O. Seon and M. E. Sevior and V. Shebalin and C. P. Shen and T. -A. Shibata and J. -G. Shiu and B. Shwartz and F. Simon and Y. -S. Sohn and A. Sokolov and E. Solovieva and M. Starič and M. Sumihama and T. Sumiyoshi and U. Tamponi and K. Tanida and Y. Teramoto and T. Uglov and Y. Unno and S. Uno and C. Van Hulse and P. Vanhoefer and G. Varner and A. Vinokurova and V. Vorobyev and A. Vossen and M. N. Wagner and C. H. Wang and M. -Z. Wang and P. Wang and K. M. Williams and E. Won and J. Yamaoka and Y. Yamashita and S. Yashchenko and H. Ye and Y. Yusa and C. C. Zhang and Z. P. Zhang and V. Zhilich and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:1508.06757},
year = {2016}
}
备注
36 pages, 37 figures, 11 tables, Belle Preprint 2015-15, KEK Preprint 2015-24