Lepton flavor violating processes in unparticle physics

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

DOI:https://doi.org/10.1103/PHYSREVD.76.077701· OSTI ID:21032399

Caidian, Lue ^[1]; Wei, Wang; Yuming, Wang ^[1]

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1. Institute of High Energy Physics, P.O. Box 918(4) Beijing, 100049 (China)

We study the virtual effects of unparticle physics in the lepton flavor violating processes M{sup 0}{yields}l{sup +}l{sup '-} and e{sup +}e{sup -}{yields}l{sup +}l{sup '-} scattering, where M{sup 0} denotes the pseudoscalar mesons: {pi}{sup 0}, K{sub L}, D{sub 0}, B{sub 0}, B{sub s}{sup 0} and l, l{sup '} denote two different lepton flavors. For the decay of B{sup 0}{yields}l{sup +}l{sup '-}, there is no constraint from the current experimental upper bounds on the vector unparticle coupling with leptons. The constraint on the coupling constant between scalar unparticle field and leptons is sensitive to the scaling dimension of the unparticle d{sub U}. For the scattering process e{sup -}e{sup +}{yields}l{sup -}l{sup '+}, there is only constraint from experiments on the vector unparticle couplings with leptons but no constraint on the scalar unparticle. We study the {radical}(s) dependence of the cross section (1/{sigma})(d{sigma}/d{radical}(s)) of e{sup +}e{sup -}{yields}l{sup -}l{sup '+} with different values of d{sub U}. If d{sub U}=1.5, the cross section is independent on the center mass energy. For d{sub U}>1.5, the cross section increases with {radical}(s)

• OSTI ID: 21032399
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B NEUTRAL MESONS
COUPLING
COUPLING CONSTANTS
CROSS SECTIONS
ELECTRONS
FLAVOR MODEL
PARTICLE DECAY
PIONS NEUTRAL
POSITRONS
QUANTUM CHROMODYNAMICS
REST MASS
SCALING LAWS
SCATTERING