Unparticle phase effects

Journal Article · Wed Aug 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.036007· OSTI ID:21027538

Chen, C -H ^[1]; Geng, C -Q ^[2]

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1. Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan (China)
2. Department of Physics, National Tsing-Hua University, Hsinchu 300, Taiwan (China)

Unparticles proposed by Georgi carry CP conserving phases in their propagators. We demonstrate that these peculiar phases have an important impact on CP violation. Without including the strong QCD phases, we study the unparticle phase effects on the direct CP asymmetries in the exclusive decays of B{sub d}{yields}{pi}{sup +}{pi}{sup -} and B{yields}{pi}K, in which the flavor changing neutral currents are forbidden at tree level but induced by one-loop diagrams. Interesting and consistent results comparing to the data are obtained. In addition, we find that unparticles will significantly enhance the differential branching ratio of b{yields}sl{sup +}l{sup -} at the small invariant mass of l{sup +}l{sup -}. The forward-backward asymmetries for b{yields}sl{sup +}l{sup -} due to unparticles are also explored.

• OSTI ID: 21027538
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B QUARKS
BRANCHING RATIO
CP INVARIANCE
FLAVOR MODEL
LEPTONS
NEUTRAL CURRENTS
PARTICLE DECAY
PIONS MINUS
PROPAGATOR
QUANTUM CHROMODYNAMICS
REST MASS
S QUARKS