New Physics Contributions to the Lifetime Difference in D{sup 0}-D{sup 0} Mixing

Journal Article · Fri May 04 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.181801· OSTI ID:20951328

Golowich, Eugene ^[1]; Pakvasa, Sandip ^[2]; Petrov, Alexey A ^[3]

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1. Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
2. Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States)
3. Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201 (United States)

We present the first general analysis of New Physics contributions to the D{sup 0}-D{sup 0} lifetime difference (equivalently {delta}{gamma}{sub D}). We argue that New Physics (NP) contributions to |{delta}C|=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}{sub D} for realistic values of light quark masses, even if such NP contributions are undetectable in the current round of D{sup 0} decay experiments. This makes {delta}{gamma}{sub D} a viable observable for studies of indirect effects of New Physics.

• OSTI ID: 20951328
• Journal Information: Physical Review Letters, Vol. 98, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.98.181801; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
D NEUTRAL MESONS
D QUARKS
FLAVOR MODEL
LIFETIME
MASS
PARTICLE DECAY
SU-3 GROUPS
U QUARKS