物理セミナー/Physics seminar

分類物理セミナー
開始2017/11/14(火)16:00
終了2017/11/14(火)17:00
会場Room 345, Building #4, Tsukuba-campus (MCU 281)
講演タイトルProduction of tensor meson f2(1270) and tensor glueball in gamma-gamma collisions within the QCD factorisation framework
講演者Nokolay Kivel (Johannes Gutenberg University Mainz)
言語英語/English
連絡先hideki.miyake@kek.jp (4896)
ウェブサイトhttps://www2.kek.jp/physics-seminar/
食堂・売店利用予定なし/0

概要

Motivated by the first measurement of the transition form factor $\gamma^*\gamma \to f_2(1270)$ at large momentum transfers by the BELLE collaboration we present an improved QCD analysis of this reaction in the framework of collinear factorization including contributions of twist-three quark-antiquark-gluon operators and an estimate of soft end-point corrections using light-cone sum rules.
The results appear to be in a good agreement with the data, in particular the predicted scaling behavior is reproduced in all cases.

We also study tensor glueball production in the reaction $\gamma\gamma\rightarrow G_2\pi^0$. The corresponding cross section is computed at higher momentum transfer. We obtain that under some plausible assumptions this cross section could be measured in BELLE-II experiment.

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