A minimal model with large extra dimensions to fit the neutrino data.pdfVIP

下载本文档

3
0
约1.66万字
约 8页
2017-04-11 发布于江苏
举报
版权申诉

A minimal model with large extra dimensions to fit the neutrino data.pdf

1、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。。
2、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。
3、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)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

A minimal model with large extra dimensions to fit the neutrino data

a r X i v : h e p - p h / 0 1 0 5 1 8 6 v 1 1 8 M a y 2 0 0 1 A MINIMAL MODEL WITH LARGE EXTRA DIMENSIONS TO FIT THE NEUTRINO DATA LING FU-SIN Service de Physique The?orique Universite? Libre de Bruxelles Campus de la Plaine CP225 Bvd du Triomphe, 1050 Brussels, Belgium The existence of large extra dimensions enables to explain very simply the various neutrino suppression data. The flavour neutrinos, confined on the brane, are coupled to a ”bulk” neutrino state, which is seen as an infinite tower of Kaluza-Klein states from the 4-dimensional point of view. The oscillation of flavour neutrinos into these states can lead to a global and sizable energy-independent suppression at large distances, which can be related to the solar neutrino puzzle. 1 1 Introduction The possibility of ”large extra dimensions”, i.e. with (at least) one compactification radius close to the current validity limit of Newton’s law of gravitation (～ 1mm), raises considerable interest. One reason is that it could solve the ”so-called” hierarchy problem 2 by providing us with a new fundamental energy scale M? around 1 TeV. The discrepancy between the apparent huge value of the Planck scale and the weak scale then results from the fact that extra dimensions remain ”hidden” at low energies for all interactions except gravitation. From the relation M2P lanck = Vn ·Mn+2? we see that at least 2 extra dimensions are needed (n ≥ 2) to avoid deviations from Newton’s law. Another reason is that it can bring some new physics just ”around the corner”, at energies as low as 1 TeV. In particular, neutrino physics is a ideal area to study new theories. While particles belonging to the Standard Model (SM) are required to be confined on the usual four dimensional spacetime (the 3-brane with thickness ～ 1 TeV ?1), sterile neutrinos, which do not experience any of the gauge interactions, can propagate in the 4+n dimensional spacetime as well as gravitons, and turn to be an efficient tool to probe the ”bulk” of