Comments on Gaugino Screening

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Gauge mediated models of supersymmetry breaking often exhibit 'gaugino screening,' where to leading order in F, gaugino masses are unaffected by higher dimensional Kahler potential interactions between the supersymmetry breaking spurion and the messengers. We provide a derivation of this phenomenon which utilizes the gaugino counterterm originally proposed in the context of anomaly mediation by Dine and Seiberg. We argue that this counterterm is present when there are non-zero messenger F-terms, and can cancel the leading order Feynman diagram contribution to the gaugino mass. We provide a nontrivial check of the regulator independence of our results by performing the computation ... continued below

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6 pages

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Cohen, Timothy; Hook, Anson & Wecht, Brian February 15, 2012.

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Gauge mediated models of supersymmetry breaking often exhibit 'gaugino screening,' where to leading order in F, gaugino masses are unaffected by higher dimensional Kahler potential interactions between the supersymmetry breaking spurion and the messengers. We provide a derivation of this phenomenon which utilizes the gaugino counterterm originally proposed in the context of anomaly mediation by Dine and Seiberg. We argue that this counterterm is present when there are non-zero messenger F-terms, and can cancel the leading order Feynman diagram contribution to the gaugino mass. We provide a nontrivial check of the regulator independence of our results by performing the computation using both dimensional reduction and Pauli-Villars. This analysis reconciles an apparent contradiction between diagrammatics and analytic continuation into superspace.

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6 pages

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  • Journal Name: Submitted to Physical Review D

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  • Report No.: SLAC-PUB-14834
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1035081
  • Archival Resource Key: ark:/67531/metadc829927

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  • February 15, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Nov. 22, 2016, 10:49 p.m.

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Cohen, Timothy; Hook, Anson & Wecht, Brian. Comments on Gaugino Screening, article, February 15, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc829927/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.