Unparticle self-interactions and their collider implications

Jonathan L. Feng, Arvind Rajaraman, and Huitzu Tu
Phys. Rev. D 77, 075007 – Published 17 April 2008

Abstract

In unparticle physics, operators of the conformal sector have self-interactions, and these are unsuppressed for strong coupling. The 3-point interactions are completely determined by conformal symmetry, up to a constant. We do not know of any theoretical upper bounds on this constant. Imposing current experimental constraints, we find that these interactions mediate spectacular collider signals, such as ppUUUγγγγ, γγZZ, ZZZZ, γγl+l, ZZl+l, and 4l, with cross sections of picobarns or larger at the large hadron collider. Self-interactions may therefore provide the leading discovery prospects for unparticle physics.

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  • Received 23 January 2008

DOI:https://doi.org/10.1103/PhysRevD.77.075007

©2008 American Physical Society

Authors & Affiliations

Jonathan L. Feng, Arvind Rajaraman, and Huitzu Tu

  • Department of Physics and Astronomy, University of California, Irvine, California 92697, USA

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Issue

Vol. 77, Iss. 7 — 1 April 2008

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