New physics contributions to the lifetime difference in D0-(D)over-bar0 mixing

被引：43
作者：
Golowich, Eugene [1 ]
Pakvasa, Sandip
Petrov, Alexey A.
机构：
[1] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[2] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA
[3] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA
[4] USAUniv Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 18期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.98.181801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present the first general analysis of New Physics contributions to the D-0-(D) over bar (0) lifetime difference (equivalently Delta Gamma(D)). We argue that New Physics (NP) contributions to vertical bar Delta C vertical bar=1 processes can dominate the lifetime difference in the flavor SU(3) limit. We provide several specific examples of models that produce sizable effects in Delta Gamma(D) for realistic values of light quark masses, even if such NP contributions are undetectable in the current round of D-0 decay experiments. This makes Delta Gamma(D) a viable observable for studies of indirect effects of New Physics.
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页数：4
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