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| 題名: | Study of π0 pair production in single-tag two-photon collisions |
| 作者: | 陳鎰鋒;Uehara, S.;Abdesselam, A.;Adachi, I.;Aihara, H.;Asner, D. M.;Atmacan, H.;Aushev, T.;Babu, V.;Biswal, J.;Bonvicini, G.;Browder, T. E.;Cheon, B. G.;Chilikin, K.;Cho, K.;Chobanova, V.;Dalseno, J.;Danilov, M.;Doležal, Z.;Farhat, H.;Gabyshev, N.;Giordano, F.;Glattauer, R.;Goh, Y. M.;Hayasaka, K.;He, X. H.;Hou, W.-S.;Inami, K.;Ishikawa, A.;Itoh, R.;Iwasaki, Y.;Jaegle, I.;Joffe, D.;Joo, K. K.;Julius, T.;Kato, E.;Kawasaki, T.;Kim, D. Y.;Kim, J. B.;Kim, J. H.;Ko, B. R.;Krokovny, P.;Kumita, T.;Kwon, Y.-J.;Lange, J. S.;Lee, I. S.;Li, C.;Li, L.;Libby, J.;Liventsev, D.;Lukin, P.;Mizuk, R.;Mohanty, S.;Moll, A.;Moon, H. K.;Mori, T.;Nakano, E.;Ogawa, S.;Pakhlova, G.;Pal, B.;Park, H.;Pestotnik, R.;Petrič, M.;Piilonen, L. E.;Rostomyan, A.;Santelj, L.;Sanuki, T.;Sato, Y.;Schneider, O.;Schnell, G.;Schwanda, C.;Seino, Y.;Senyo, K.;Seon, O.;Shen, C. P.;Shibata, T.-A.;Shiu, J.-G.;Sohn, Y.-S.;Sokolov, A.;Solovieva, E.;Sumihama, M.;Tamponi, U.;Teramoto, Y.;Uglov, T.;Unno, Y.;Uno, S.;Vanhoefer, P.;Varner, G.;Vinokurova, A.;Vossen, A.;Wagner, M. N.;Wang, C. H.;Wang, P.;Williams, K. M.;Yamashita, Y.;Ye, H.;Zhang, C. C.;Zhang, Z. P.;Zhilich, V.;Zhulanov, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | BELLE;cross section: measured;ddc:530;differential cross section;form factor: transition;FOS: Physical sciences;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);info:eu-repo/classification/ddc/530;KEK-B;kinematics;pair production;photon;Physics;pi: scattering;two-photon |
| 日期: | 2016-02-18 |
| 上傳時間: | 2026-04-23 14:37:04 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We report a measurement of the differential cross section of $ ^0$ pair production in single-tag two-photon collisions, $ ^* \to ^0 ^0$, in $e^+ e^-$ scattering. The cross section is measured for $Q^2$ up to 30 GeV$^2$, where $Q^2$ is the negative of the invariant mass squared of the tagged photon, in the kinematic range 0.5 GeV < W < 2.1 GeV and $|\cos ^*|$ < 1.0 for the total energy and pion scattering angle, respectively, in the $ ^* $ center-of-mass system. The results are based on a data sample of 759 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The transition form factor of the $f_0(980)$ and that of the $f_2(1270)$ with the helicity-0, -1, and -2 components separately are measured for the first time and are compared with theoretical calculations. 36 pages, 37 figures, 11 tables, Belle Preprint 2015-15, KEK Preprint 2015-24
出版者： American Physical Society (APS)
出版日期： 2016-02-18
出處： Physical Review D, 2016-02, Vol.93 (3)
識別號： ISSN: 2470-0010
識別號： DOI: 10.48550/arxiv.1508.06757
識別號： DOI: 10.1103/physrevd.93.032003 |
| 顯示於類別: | [物理學系] 期刊論文
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