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物理学院学术论坛(第十七讲) Flavour physics: seeking new order beyond the Standard Model
发布日期:2022-10-07浏览次数:
主讲人: Vincenzo Vagnoni(INFN)
地点: 北京大学物理学院思源多功能厅(西301)
时间: 2022年10月14日(星期五)15:00—16:00

线下参会:物理学院思源多功能厅(西301)

线上参会:蔻享学术平台直播(https://www.koushare.com/lives/room/074854

现场参会报名方式:因受场地限制,现场参会仅面向北京大学校内师生,限额50人,请在10月13日(星期四)17:00前提交报名信息https://jinshuju.net/f/UYYCg0),最终报名结果将以短信和邮件通知为准。特别提示:请参加活动的老师注意遵守北京大学各项疫情防控规定,全程佩戴口罩,行程码无京外行程,核酸72小时之内。


报告摘要:

The Standard Model of Particle Physics has been extremely successful in describing the behaviour of all known fundamental particles so far. However, several crucial questions are still unanswered, and the structure of the Standard Model remains mysterious in many aspects. Amongst these, the reason why from an initially matter-antimatter symmetric universe right after the Big Bang, a matter-dominated universe had evolved leading to the disappearance of all antimatter, is one of the most fascinating question marks of modern physics. Flavour physics, with both its theoretical and experimental developments, aims at finding a solution to this conundrum. After a brief introduction on some of the open questions of the Standard Model, the approach to study matter-antimatter asymmetries at particle accelerators, involving measurements of the violation of the so-called CP symmetry, will be presented and discussed. A particle detector operating at the Large Hadron Collider in Geneva, namely LHCb, dedicated to such a study, will be described in some detail, along with a selection of flagship measurements. The LHCb experiment, that comprises nowadays about 1500 researchers from 90 institutes in 20 countries, is not only capable of providing measurements of CP symmetry violation, but also precision measurements necessary to understand QCD in the low transverse-momentum regime, notably including heavy-quark spectroscopy. Hence the most relevant LHCb measurements in the sector of heavy-quark spectroscopy will be presented too. The colloquium will be concluded with an overview of present and future opportunities, depicting the path towards the end of the Large Hadron Collider lifetime in the 2040’s.

报告人简介:

Vincenzo Vagnoni, Director of Research of the National Institute for Nuclear Physics (INFN), Italy, has been leading author of several CP violation measurements, notably including the first observation of CP violation in the decays of Bs mesons and the first observation of CP violation in the charm sector. In particular, the latter is considered to be amongst the most important findings of Large Hadron Collider experiments so far. He has been covering several management roles throughout his career, amongst which the responsibility of the High Energy Physics sector at INFN Bologna (ATLAS, CDF, CMS, LHCb and other experiments), the responsibility of all LHCb physics activities (LHCb Physics Coordination), and at present the responsibility for the management of the Italian effort in LHCb (research groups from 14 different institutes with about 150 researchers). Vincenzo Vagnoni is author of more than 700 physics papers and other products, and has been invited speaker at all major conferences, notably including a plenary talk at ICHEP, and summary talks at Beauty and Moriond QCD. Finally, he carries out colourful outreach activities to orient students to scientific and technological matters, with focus on particle physics, but not limited to, and has a strong commitment in the development of international cooperation in science, that is today, more than ever, a fundamental tool to unite humankind, in the respect of cultures and histories of all people in the world.


北京大学物理学院学术论坛创办于2020年9月,邀请国内外高校和研究机构高层次科技创新领军学者就物理学及相关领域的基础前沿探索、关键技术突破和热点问题等做学术演讲,旨在推进高质量学术交流,促进学科交叉融合和开拓新兴特色方向研究,培养具有科学精神、全球视野、创新能力、批判性思维的优秀青年人才。