Unparticle physics at the photon collider

Journal Article · Thu May 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.094012· OSTI ID:21250118

Kikuchi, Tatsuru ^[1]; Okada, Nobuchika ^[1]; Takeuchi, Michihisa ^[1]

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1. Theory Division, KEK, Oho 1-1, Tsukuba, Ibaraki, 305-0801 (Japan)

Recently, a conceptually new physics beyond the standard model (SM), unparticle, has been proposed, where a hidden conformal sector is coupled to the SM sector through higher dimensional operators. In this setup, we investigate unparticle physics at the photon collider, in particular, unparticle effects on the {gamma}{gamma}{yields}{gamma}{gamma} process. Since this process occurs at loop level in the SM, the unparticle effects can be significant even if the cutoff scale is very high. In fact, we find that the unparticle effects cause sizable deviations from the SM results. The scaling dimension of the unparticle d{sub U} reflects the dependence of the cross section on the final state photon invariant mass, so that precision measurements of this dependence may reveal the scaling dimension of the unparticle.

• OSTI ID: 21250118
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
MASS
PHOTON-PHOTON INTERACTIONS
PHOTONS
SCALING
SCATTERING
STANDARD MODEL