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(Seminar)Covariant chiral perturbation theory: recent applications to one-baryon sector and heavy-light systems
- Title (Seminar)Covariant chiral perturbation theory: recent applications to one-baryon sector and heavy-light systems
- Speaker
- Date
- Venue
CAS Key Laboratory of Theoretical Physics | |
Institute of Theoretical Physics | |
Chinese Academy of Sciences | |
Seminar | |
Title 题目 |
Covariant chiral perturbation theory: recent applications to one-baryon sector and heavy-light systems |
Speaker 报告人 |
姚德良 博士 |
Affiliation 所在单位 |
IFIC, Valencia, Spain |
Date 日期 |
2018年1月4日(周四)下午14:30 |
Venue 地点 |
ITP conference room322 |
Abstract 摘要 |
I first give a brief review of covariant chiral perturbation theory (ChPT): the main issue - various solutions and relation to other popular methods like lattice QCD. Then a covariant baryon ChPT with explicit delta degrees of freedom will be applied to study elastic pion-nucleon scattering up to the leading one-loop order. Phase shifts given by the recent analysis of Roy-Steiner equations are well described and the involved low-energy constants are determined. Application of covariant ChPT to a heavy-light system, in particular, interactions between charmed D mesons and Goldstone bosons will be also discussed. In combination with unitarization approach proposed in previous literature we calculate the S-wave scattering lengths and compare them to the ones of lattice QCD. In the end, I conclude with some considerations on what possible new knowledge can be gained using covariant ChPT. |
Contact person 所内联系人 |
郭奉坤 |