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Three-body annihilation of neutralinos below two-body thresholds

Chen, Xuelei and Kamionkowski, Marc (1998) Three-body annihilation of neutralinos below two-body thresholds. Journal of High Energy Physics, 1998 (07). 001. ISSN 1126-6708. http://resolver.caltech.edu/CaltechAUTHORS:CHEjhep98

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Abstract

We calculate the cross section for s-wave neutralino annihilation to three-body final states below the W+W- and tbar t thresholds. Such three-body channels may dominate the annihilation cross section if the neutralino mass is not too much less than mt and mW respectively. Furthermore, because neutrinos produced in these channels are much more energetic than those from the bbar b or τ+τ- channels, they can dominate the energetic-neutrino fluxes from neutralino annihilation in the Sun or Earth far below these thresholds and significantly enhance the neutrino signal in certain regions of the supersymmetric parameter space.


Item Type:Article
Additional Information:© SISSA 1998 Received 20 May 1998, accepted for publication 7 July 1998, Published 5 August 1998 We thank G. Jungman for help with the neutdriver code. This work was supported by D.O.E. Contract No. DEFG02-92-ER 40699, NASA NAG5-3091, and the Alfred P. Sloan Foundation.
Subject Keywords:Solar and Atmospheric Neutrinos, Dark Matter, Supersymmetric Standard Model, Neutrino Physics
Record Number:CaltechAUTHORS:CHEjhep98
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CHEjhep98
Alternative URL:http://dx.doi.org/10.1088/1126-6708/1998/07/001
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3238
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:23 May 2006
Last Modified:26 Dec 2012 08:53

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