Status of the Standard Model of Particle Phenomenology.pdf

下载文档

1
0
约8.51千字
约 7页
2017-04-06 发布于江苏
举报
版权申诉
保障服务

Status of the Standard Model of Particle Phenomenology.pdf

1、本文档共7页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

Status of the Standard Model of Particle Phenomenology

a r X i v : h e p - p h / 0 3 1 0 2 1 7 v 1 1 7 O c t 2 0 0 3 Status of the Standard Model Paul H. Frampton University of North Carolina at Chapel Hill October 2003 1 Introduction The standard model is healthy is all respects except for the non-zero neutrino masses which require an extension of the minimal version. This talk was in three parts: (I) Rise and Fall of the Zee Model 1998-2001. (II) Classification of Two-Zero Textures. (III) FGY Model relating Cosmological B to Neutrino CP violation. For parts (I) and (II) references are provided. Part (III) is included in this write-up. 2 Rise and Fall of the Zee Model 1998-2001 This first part was based on: P.H. Frampton and S.L. Glashow, Phys. Lett. 461, 95 (1999). hep-ph/9906375. 3 Classification of Two-Zero Textures The second part was based on: P.H. Frampton, S.L. Glashow and D. Marfatia, Phys. Lett. B536, 79 (2002). hep-ph/0201008 4 FGY Model relating Cosmological B with Neu- trino CP Violation One of the most profound ideas is[1] that baryon number asymmetry arises in the early universe because of processes which violate CP symmetry and 1 that terrestrial experiments on CP violation could therefore inform us of the details of such cosmological baryogenesis. The early discussions of baryogenesis focused on the violation of baryon number and its possible relation to proton decay. In the light of present evidence for neutrino masses and oscillations it is more fruitful to associate the baryon number of the universe with violation of lepton number[2]. In the present Letter we shall show how, in one class of models, the sign of the baryon number of the universe correlates with the results of CP violation in neutrino oscillation experiments which will be performed in the forseeable future. Present data on atmospheric and solar neutrinos suggest that there are respective squared mass differences ?a ? 3×10?3eV 2 and ?s ? 5×10?5eV 2. The corresponding mixing angles θ1 and θ3 satisfy tan 2θ1 ? 1 and 0.6 ≤ sin22θ3 ≤ 0.