时间：2017年11月7日（周二）下午4:00
地点：三教301
报告人：Prof. Alexander Khodjamirian
报告题目：CP-symmetry violation in charm decays: QCD-based estimate
摘要：We present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in D0→π−π+ and D0→K−K+ nonleptonic decays. The method is based on the QCD light-cone sum rules and does not rely on any model-inspired amplitude decomposition, instead leaning heavily on quark-hadron duality. We provide a Standard Model estimate of the direct CP-violating asymmetries in both pion and kaon modes and their difference and comment on further improvements of the presented computation.
报告人简介：Prof. Alexander Khodjamirian is a world famous expert on QCD applications to flavour physics, in particular on the development of both SVZ sum rules and light-cone QCD sum rules. He has published more than 100 scientific papers on the leading international journals, with the average citations per paper more than 60 and with approximately 20 very well-known" papers (cited more than 100 times) according to the inSPIRE. His review paper on QCD sum rules, written in collaboration withPietro Colangelo, has been evolved into a classical article for any researcher who are interested in THE modern applications of QCD sum rules, and has collected more than 500 citations.
邀请人：王玉明
