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| 題名: | Measurement of γγ *→π0 transition form factor at Belle |
| 作者: | 陳鎰鋒;Watanabe, Y.;Nakazawa, H.;Adachi, I.;Aihara, H.;Aushev, T.;Bakich, A. M.;Belous, K.;Bhardwaj, V.;Bhuyan, B.;Bischofberger, M.;Bozek, A.;Bračko, M.;Chang, M.-C.;Chen, P.;Cheon, B. G.;Cho, I.-S.;Doležal, Z.;Drásal, Z.;Epifanov, D.;Fast, J. E.;Goh, Y. M.;Golob, B.;Hayashii, H.;Horii, Y.;Hoshi, Y.;Hou, W.-S.;Iijima, T.;Ishikawa, A.;Itoh, R.;Iwasaki, Y.;Iwashita, T.;Kang, J. H.;Kiesling, C.;Kim, H. J.;Kim, H. O.;Kim, J. B.;Kim, J. H.;Kim, K. T.;Kim, Y. J.;Koblitz, S.;Korpar, S.;Kouzes, R. T.;Križan, P.;Kuzmin, A.;Lange, J. S.;Lee, S.-H.;Li, J.;Libby, J.;Lim, C.-L.;Liu, Z. Q.;Liventsev, D.;Matvienko, D.;Mohanty, G. B.;Moll, A.;Nakano, E.;Natkaniec, Z.;Nishida, S.;Nishimura, K.;Ogawa, S.;Ohshima, T.;Okuno, S.;Olsen, S. L.;Onuki, Y.;Pakhlov, P.;Pakhlova, G.;Park, H. K.;Park, K. S.;Pedlar, T. K.;Prothmann, K.;Ryu, S.;Sahoo, H.;Sakai, K.;Sakai, Y.;Savinov, V.;Schwanda, C.;Senyo, K.;Seon, O.;Sevior, M. E.;Shapkin, M.;Shen, C. P.;Shibata, T.-A.;Shiu, J.-G.;Singh, J. B.;Sohn, Y.-S.;Solovieva, E.;Sumiyoshi, T.;Teramoto, Y.;Trabelsi, K.;Unno, Y.;Varner, G.;Wang, C. H.;Wang, P.;Watanabe, M.;Williams, K. M.;Yuan, C. Z.;Zhang, C. C.;Zhang, Z. P.;Zhilich, V.;Zhulanov, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2012-11-09 |
| 上傳時間: | 2026-04-23 12:26:18 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We report a measurement of the process gamma gamma* -> pi(0) with a 759 fb(-1) data sample recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The pion transition form factor, F(Q(2)), is measured for the kinematical region 4 GeV2 <= Q(2) <= 40 GeV2, where -Q(2) is the invariant-mass squared of a virtual photon. The measured values of Q(2)vertical bar F(Q(2))vertical bar agree well with the previous measurements below Q(2) similar or equal to 9 GeV2 but do not exhibit the rapid growth in the higher Q(2) region seen in another recent measurement, which exceeds the asymptotic QCD expectation by as much as 50%.
出版者： American Physical Society (APS)
出版日期： 2012-11-09
出處： Physical Review D, 2012-11, Vol.86 (9)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.86.092007 |
| 顯示於類別: | [物理學系] 期刊論文
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