(Seminar) HQET Renormalization Group improved Lagrangian at O(1/m^3) with LL accuracy--Institute of Theoretical Physics，Chinese Academy of Sciences

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(Seminar) HQET Renormalization Group improved Lagrangian at O(1/m^3) with LL accuracy

11/02 2018

Title (Seminar) HQET Renormalization Group improved Lagrangian at O(1/m^3) with LL accuracy
Speaker
Date
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Abstract

CAS Key Laboratory of Theoretical Physics
Institute of Theoretical Physics
Chinese Academy of Sciences
Seminar
Title 题目	HQET Renormalization Group improved Lagrangian at O(1/m^3) with LL accuracy
Speaker 报告人	Daniel Moreno
Affiliation 所在单位	IFAE, Autonomous University of Barcelona
Date 日期	2018年11月2日（周五）上午10:00
Venue 地点	Conference Room 322, ITP main building
Abstract 摘要	We explain how to obtain the renormalization group improved expressions of the Wilson coefficients of the HQET Lagrangian with leading logarithmic approximation to O(1/m^3), which includes the heavy quark chromopolarizabilites. Our analysis includes the effects induced by spectator quarks. We observe that the numerical impact of these logarithms is very large in most cases. The Wilson coefficients we compute are necessary ingredients to obtain the pNRQCD Lagrangian with NNNLL accuracy, which in turn, is the necessary precision to obtain the complete heavy quarkonium spectrum with NNNLL accuracy, and also necessary for the computation of the production and annihilation of heavy quarkonium with NNLL precision.
Contact person 所内联系人	郭奉坤

　