pith. sign in

arxiv: 1205.3249 · v2 · pith:E53PQPKTnew · submitted 2012-05-15 · ✦ hep-ex

Measurement of gamma gamma* --> pi0 transition form factor at Belle

The Belle Collaboration: S. Uehara , Y. Watanabe , H. Nakazawa , I. Adachi , H. Aihara , D. M. Asner , T. Aushev , A. M. Bakich
show 152 more authors
K. Belous V. Bhardwaj B. Bhuyan M. Bischofberger A. Bondar G. Bonvicini A. Bozek M. Bracko T. E. Browder M.-C. Chang A. Chen P. Chen B. G. Cheon K. Chilikin I.-S. Cho K. Cho Y. Choi J. Dalseno Z. Dolezal Z. Drasal S. Eidelman D. Epifanov J. E. Fast M. Feindt V. Gaur N. Gabyshev Y. M. Goh B. Golob J. Haba K. Hayasaka H. Hayashii Y. Horii Y. Hoshi W.-S. Hou H. J. Hyun T. Iijima A. Ishikawa R. Itoh M. Iwabuchi Y. Iwasaki T. Iwashita T. Julius J. H. Kang T. Kawasaki C. Kiesling H. J. Kim H. O. Kim J. B. Kim J. H. Kim K. T. Kim M. J. Kim Y. J. Kim B. R. Ko S. Koblitz P. Kodys S. Korpar R. T. Kouzes P. Krizan P. Krokovny A. Kuzmin Y.-J. Kwon J. S. Lange S.-H. Lee J. Li Y. Li J. Libby C.-L. Lim C. Liu Y. Liu Z. Q. Liu D. Liventsev R. Louvot D. Matvienko K. Miyabayashi H. Miyata Y. Miyazaki G. B. Mohanty A. Moll T. Mori N. Muramatsu Y. Nagasaka E. Nakano M. Nakao Z. Natkaniec S. Nishida K. Nishimura O. Nitoh S. Ogawa T. Ohshima S. Okuno S. L. Olsen Y. Onuki P. Pakhlov G. Pakhlova H. K. Park K. S. Park T. K. Pedlar R. Pestotnik M. Petric L. E. Piilonen K. Prothmann M. Rohrken S. Ryu H. Sahoo K. Sakai Y. Sakai T. Sanuki Y. Sato V. Savinov O. Schneider C. Schwanda R. Seidl K. Senyo O. Seon M. E. Sevior M. Shapkin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz A. Sibidanov F. Simon J. B. Singh P. Smerkol Y.-S. Sohn A. Sokolov E. Solovieva M. Staric T. Sumiyoshi Y. Teramoto K. Trabelsi T. Tsuboyama M. Uchida Y. Unno S. Uno Y. Usov P. Vanhoefer G. Varner A. Vinokurova V. Vorobyev C. H. Wang P. Wang M. Watanabe K. M. Williams E. Won Y. Yamashita C. Z. Yuan C. C. Zhang Z. P. Zhang V. Zhilich V. Zhulanov A. Zupanc
This is my paper
classification ✦ hep-ex
keywords gammameasurementbellefactorformmeasuredregiontransition
0
0 comments X
read the original abstract

We report a measurement of the process gamma gamma* --> pi0 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 GeV^2 <~ Q^2 <~ 40 GeV^2, where -Q^2 is the invariant mass squared of a virtual photon. The measured values of Q^2|F(Q^2)| agree well with the previous measurements below Q^2 ~= 9 GeV^2 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%.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Combined Analysis of Lattice QCD and Experimental Data on the Pion Transition Form Factor

    hep-lat 2026-06 unverdicted novelty 5.0

    Feasibility study of combined LQCD and experimental data on pion TFF via modified z-expansion fit reports up to 3x uncertainty reduction in singly-virtual limit but only 1.5x improvement for the pion-pole g-2 contribution.

  2. Neutral and charged pion Form Factors in the intermediate-energy region from double-dilaton HQCD model

    hep-ph 2025-12 unverdicted novelty 5.0

    Pion form factors in the intermediate-energy regime are computed via double-dilaton HQCD, indicating non-perturbative strong-interaction effects remain relevant at scales traditionally viewed as perturbative.

  3. The anomalous magnetic moment of the muon in the Standard Model

    hep-ph 2020-06 accept novelty 2.0

    The Standard Model value for the muon anomalous magnetic moment is 116591810(43)×10^{-11}, 3.7σ below the Brookhaven experimental measurement.