Implications of D0-(D)over-bar0 mixing for new physics

被引：166

作者：

Golowich, Eugene ^{[1
]}

Hewett, JoAnne

Pakvasa, Sandip

Petrov, Alexey A.

机构：

[1] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[2] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[3] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

[4] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA

[5] Fermilab Natl Accelerator Lab, Theoret Phys Grp, Batavia, IL 60510 USA

[6] Univ Hawaii, High Energy Phys Grp, Honolulu, HI 96822 USA

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.76.095009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We provide a comprehensive, up-to-date analysis of possible new physics contributions to the mass difference Delta M-D in D-0-(D) over bar (0) mixing. We consider the most general low-energy effective Hamiltonian and include leading-order QCD running of effective operators. We then explore an extensive list of possible new physics models that can generate these operators, which we organize as including extra fermions, extra gauge bosons, extra scalars, extra space dimensions and extra symmetries. For each model we place restrictions on the allowed parameter space using the recent evidence for observation of D meson mixing. In many scenarios, we find strong constraints that surpass those from other search techniques and provide an important test of flavor-changing neutral currents in the up-quark sector. We also review the recent BABAR and Belle findings, and describe the current status of the standard model predictions of D-0-(D) over bar (0) mixing.

引用

页数：41

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