Extra Dimensions and the Muon Anomalous Magnetic Moment.pdfVIP

下载本文档

1
0
约4.29万字
约 18页
2017-04-11 发布于江苏
举报
版权申诉

Extra Dimensions and the Muon Anomalous Magnetic Moment.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

Extra Dimensions and the Muon Anomalous Magnetic Moment

a r X i v : h e p - p h / 9 9 0 2 3 1 0 v 3 1 S e p 1 9 9 9 February 1, 2008 LBNL-42812 UCB-PTH-99/03 Extra Dimensions and the Muon Anomalous Magnetic Moment 1 M. L. Graesser 2 Theoretical Physics Group, Lawrence Berkeley National Laboratory and Department of Physics, University of California Berkeley, California 94720 Abstract It has been proposed recently that the scale of strong gravity can be very close to the weak scale. Dimensions of sizes anywhere from ～mm to ～TeV?1 can be populated by bulk gravitons, vector bosons and fermions. In this paper the one-loop correction of these bulk particles to the muon magnetic moment (MMM) are investigated. In all the scenarios considered here it is found that the natural value for the MMM is O(10?8?10?9). One main result is that the contribution of each Kaluza?Klein graviton to the MMM is remarkably finite. The bulk graviton loop implies a limit of ～ 400 GeV on the scale of strong gravity. This could be pushed up to ～ 1 ? 2 TeV, even in the case of six extra dimensions, if the BNL E821 experiment reaches an expected sensitivity of ～ 10?9. Limits on a bulk B ? L gauge boson are interesting, but still allow for forces 106 ? 107 times stronger than gravity at mm?1 distances. The correction of a bulk right-handed neutrino to the MMM in one recent proposal for generating small Dirac neutrino masses is considered in the context of a two Higgs doublet model, and is found to be close to 10?9. The contributions of all these bulk particles to the MMM are (roughly) independent of both the total number of extra dimensions and the dimension of the subspace occupied by the bulk states. Finally, limits on the size of “small” compact dimensions gotten from the MMM and atomic parity violation are determined and compared. 1This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under Contract DE-AC03- 76SF00098.