Abstract
We report a measurement of the process γγ *→π0 with a 759fb -1 data sample recorded with the Belle detector at the KEKB asymmetric-energy e +e - collider. The pion transition form factor, F(Q2), is measured for the kinematical region 4GeV2Q240GeV2, where -Q2 is the invariant-mass squared of a virtual photon. The measured values of Q2|F(Q2)| agree well with the previous measurements below Q29GeV2 but do not exhibit the rapid growth in the higher Q2 region seen in another recent measurement, which exceeds the asymptotic QCD expectation by as much as 50%.
| Original language | English |
|---|---|
| Article number | 092007 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 86 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 Nov 9 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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Measurement of γγ *→π0 transition form factor at Belle. / Uehara, S.; Watanabe, Y.; Nakazawa, H.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Belous, K.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M. C.; Chen, A.; Chen, P.; Cheon, B. G.; Chilikin, K.; Cho, I. S.; Cho, K.; Choi, Y.; Dalseno, J.; Doleal, Z.; Drásal, Z.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Feindt, M.; Gaur, V.; Gabyshev, N.; Goh, Y. M.; Golob, B.; Haba, J.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W. S.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Ko, B. R.; Koblitz, S.; Kody, P.; Korpar, S.; Kouzes, R. T.; Krian, P.; Krokovny, P.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Lee, S. H.; Li, J.; Li, Y.; Libby, J.; Lim, C. L.; Liu, C.; Liu, Y.; Liu, Z. Q.; Liventsev, D.; Louvot, R.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Moll, A.; Mori, T.; Muramatsu, N.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, H. K.; Park, K. S.; Pedlar, T. K.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Prothmann, K.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, K.; Sakai, Y.; Sanuki, T.; Sato, Y.; Savinov, V.; Schneider, O.; Schwanda, C.; Seidl, R.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Singh, J. B.; Smerkol, P.; Sohn, Y. S.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Tsuboyama, T.; Uchida, M.; Unno, Y.; Uno, S.; Usov, Y.; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Wang, C. H.; Wang, P.; Watanabe, M.; Williams, K. M.; Won, E.; Yamashita, Y.; Yuan, C. Z.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 86, No. 9, 092007, 09.11.2012.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Measurement of γγ *→π0 transition form factor at Belle
AU - Uehara, S.
AU - Watanabe, Y.
AU - Nakazawa, H.
AU - Adachi, I.
AU - Aihara, H.
AU - Asner, D. M.
AU - Aushev, T.
AU - Bakich, A. M.
AU - Belous, K.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bischofberger, M.
AU - Bondar, A.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Chang, M. C.
AU - Chen, A.
AU - Chen, P.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, I. S.
AU - Cho, K.
AU - Choi, Y.
AU - Dalseno, J.
AU - Doleal, Z.
AU - Drásal, Z.
AU - Eidelman, S.
AU - Epifanov, D.
AU - Fast, J. E.
AU - Feindt, M.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Goh, Y. M.
AU - Golob, B.
AU - Haba, J.
AU - Hayasaka, K.
AU - Hayashii, H.
AU - Horii, Y.
AU - Hoshi, Y.
AU - Hou, W. S.
AU - Hyun, H. J.
AU - Iijima, T.
AU - Ishikawa, A.
AU - Itoh, R.
AU - Iwabuchi, M.
AU - Iwasaki, Y.
AU - Iwashita, T.
AU - Julius, T.
AU - Kang, J. H.
AU - Kawasaki, T.
AU - Kiesling, C.
AU - Kim, H. J.
AU - Kim, H. O.
AU - Kim, J. B.
AU - Kim, J. H.
AU - Kim, K. T.
AU - Kim, M. J.
AU - Kim, Y. J.
AU - Ko, B. R.
AU - Koblitz, S.
AU - Kody, P.
AU - Korpar, S.
AU - Kouzes, R. T.
AU - Krian, P.
AU - Krokovny, P.
AU - Kuzmin, A.
AU - Kwon, Y. J.
AU - Lange, J. S.
AU - Lee, S. H.
AU - Li, J.
AU - Li, Y.
AU - Libby, J.
AU - Lim, C. L.
AU - Liu, C.
AU - Liu, Y.
AU - Liu, Z. Q.
AU - Liventsev, D.
AU - Louvot, R.
AU - Matvienko, D.
AU - Miyabayashi, K.
AU - Miyata, H.
AU - Miyazaki, Y.
AU - Mohanty, G. B.
AU - Moll, A.
AU - Mori, T.
AU - Muramatsu, N.
AU - Nagasaka, Y.
AU - Nakano, E.
AU - Nakao, M.
AU - Natkaniec, Z.
AU - Nishida, S.
AU - Nishimura, K.
AU - Nitoh, O.
AU - Ogawa, S.
AU - Ohshima, T.
AU - Okuno, S.
AU - Olsen, S. L.
AU - Onuki, Y.
AU - Pakhlov, P.
AU - Pakhlova, G.
AU - Park, H. K.
AU - Park, K. S.
AU - Pedlar, T. K.
AU - Pestotnik, R.
AU - Petrič, M.
AU - Piilonen, L. E.
AU - Prothmann, K.
AU - Röhrken, M.
AU - Ryu, S.
AU - Sahoo, H.
AU - Sakai, K.
AU - Sakai, Y.
AU - Sanuki, T.
AU - Sato, Y.
AU - Savinov, V.
AU - Schneider, O.
AU - Schwanda, C.
AU - Seidl, R.
AU - Senyo, K.
AU - Seon, O.
AU - Sevior, M. E.
AU - Shapkin, M.
AU - Shen, C. P.
AU - Shibata, T. A.
AU - Shiu, J. G.
AU - Shwartz, B.
AU - Sibidanov, A.
AU - Simon, F.
AU - Singh, J. B.
AU - Smerkol, P.
AU - Sohn, Y. S.
AU - Sokolov, A.
AU - Solovieva, E.
AU - Starič, M.
AU - Sumiyoshi, T.
AU - Teramoto, Y.
AU - Trabelsi, K.
AU - Tsuboyama, T.
AU - Uchida, M.
AU - Unno, Y.
AU - Uno, S.
AU - Usov, Y.
AU - Vanhoefer, P.
AU - Varner, G.
AU - Vinokurova, A.
AU - Vorobyev, V.
AU - Wang, C. H.
AU - Wang, P.
AU - Watanabe, M.
AU - Williams, K. M.
AU - Won, E.
AU - Yamashita, Y.
AU - Yuan, C. Z.
AU - Zhang, C. C.
AU - Zhang, Z. P.
AU - Zhilich, V.
AU - Zhulanov, V.
AU - Zupanc, A.
PY - 2012/11/9
Y1 - 2012/11/9
N2 - We report a measurement of the process γγ *→π0 with a 759fb -1 data sample recorded with the Belle detector at the KEKB asymmetric-energy e +e - collider. The pion transition form factor, F(Q2), is measured for the kinematical region 4GeV2Q240GeV2, where -Q2 is the invariant-mass squared of a virtual photon. The measured values of Q2|F(Q2)| agree well with the previous measurements below Q29GeV2 but do not exhibit the rapid growth in the higher Q2 region seen in another recent measurement, which exceeds the asymptotic QCD expectation by as much as 50%.
AB - We report a measurement of the process γγ *→π0 with a 759fb -1 data sample recorded with the Belle detector at the KEKB asymmetric-energy e +e - collider. The pion transition form factor, F(Q2), is measured for the kinematical region 4GeV2Q240GeV2, where -Q2 is the invariant-mass squared of a virtual photon. The measured values of Q2|F(Q2)| agree well with the previous measurements below Q29GeV2 but do not exhibit the rapid growth in the higher Q2 region seen in another recent measurement, which exceeds the asymptotic QCD expectation by as much as 50%.
UR - http://www.scopus.com/inward/record.url?scp=84869013210&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869013210&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.86.092007
DO - 10.1103/PhysRevD.86.092007
M3 - Article
AN - SCOPUS:84869013210
VL - 86
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 9
M1 - 092007
ER -