Kinetic mixing and the supersymmetric gauge hierarchy

Keith R Dienes, Christopher Kolda, John March-Russell

Research output: Contribution to journalArticle

280 Citations (Scopus)

Abstract

The most general Lagrangian for a model with two U(1) gauge symmetries contains a renormalizable operator which mixes their gauge kinetic terms. Such kinetic mixing can be generated at arbitrarily high scales but will not be suppressed by large masses. In models whose supersymmetry (SUSY)-breaking hidden sectors contain U(1) gauge factors, we show that such terms will generically arise and communicate SUSY breaking to the visible sector through mixing with hypercharge. In the context of the usual supergravity- or gauge-mediated communication scenarios with D-terms of order the fundamental scale of SUSY breaking, this effect can destabilize the gauge hierarchy. Even in models for which kinetic mixing is suppressed or the D-terms are arranged to be small, this effect is a potentially large correction to the soft scalar masses and therefore introduces a new measurable low-energy parameter. We calculate the size of kinetic mixing both in field theory and in string theory, and argue that appreciable kinetic mixing is a generic feature of string models. We conclude that the possibility of kinetic mixing effects cannot be ignored in model building and in phenomenological studies of the low-energy SUSY spectra.

Original languageEnglish (US)
Pages (from-to)104-118
Number of pages15
JournalNuclear Physics B
Volume492
Issue number1-2
StatePublished - May 12 1997
Externally publishedYes

Fingerprint

hierarchies
supersymmetry
kinetics
sectors
supergravity
string theory
strings
communication
scalars
operators
energy
symmetry

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Dienes, K. R., Kolda, C., & March-Russell, J. (1997). Kinetic mixing and the supersymmetric gauge hierarchy. Nuclear Physics B, 492(1-2), 104-118.

Kinetic mixing and the supersymmetric gauge hierarchy. / Dienes, Keith R; Kolda, Christopher; March-Russell, John.

In: Nuclear Physics B, Vol. 492, No. 1-2, 12.05.1997, p. 104-118.

Research output: Contribution to journalArticle

Dienes, KR, Kolda, C & March-Russell, J 1997, 'Kinetic mixing and the supersymmetric gauge hierarchy', Nuclear Physics B, vol. 492, no. 1-2, pp. 104-118.
Dienes KR, Kolda C, March-Russell J. Kinetic mixing and the supersymmetric gauge hierarchy. Nuclear Physics B. 1997 May 12;492(1-2):104-118.
Dienes, Keith R ; Kolda, Christopher ; March-Russell, John. / Kinetic mixing and the supersymmetric gauge hierarchy. In: Nuclear Physics B. 1997 ; Vol. 492, No. 1-2. pp. 104-118.
@article{60eff745bff644eb95be9983d14bba16,
title = "Kinetic mixing and the supersymmetric gauge hierarchy",
abstract = "The most general Lagrangian for a model with two U(1) gauge symmetries contains a renormalizable operator which mixes their gauge kinetic terms. Such kinetic mixing can be generated at arbitrarily high scales but will not be suppressed by large masses. In models whose supersymmetry (SUSY)-breaking hidden sectors contain U(1) gauge factors, we show that such terms will generically arise and communicate SUSY breaking to the visible sector through mixing with hypercharge. In the context of the usual supergravity- or gauge-mediated communication scenarios with D-terms of order the fundamental scale of SUSY breaking, this effect can destabilize the gauge hierarchy. Even in models for which kinetic mixing is suppressed or the D-terms are arranged to be small, this effect is a potentially large correction to the soft scalar masses and therefore introduces a new measurable low-energy parameter. We calculate the size of kinetic mixing both in field theory and in string theory, and argue that appreciable kinetic mixing is a generic feature of string models. We conclude that the possibility of kinetic mixing effects cannot be ignored in model building and in phenomenological studies of the low-energy SUSY spectra.",
author = "Dienes, {Keith R} and Christopher Kolda and John March-Russell",
year = "1997",
month = "5",
day = "12",
language = "English (US)",
volume = "492",
pages = "104--118",
journal = "Nuclear Physics B",
issn = "0550-3213",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Kinetic mixing and the supersymmetric gauge hierarchy

AU - Dienes, Keith R

AU - Kolda, Christopher

AU - March-Russell, John

PY - 1997/5/12

Y1 - 1997/5/12

N2 - The most general Lagrangian for a model with two U(1) gauge symmetries contains a renormalizable operator which mixes their gauge kinetic terms. Such kinetic mixing can be generated at arbitrarily high scales but will not be suppressed by large masses. In models whose supersymmetry (SUSY)-breaking hidden sectors contain U(1) gauge factors, we show that such terms will generically arise and communicate SUSY breaking to the visible sector through mixing with hypercharge. In the context of the usual supergravity- or gauge-mediated communication scenarios with D-terms of order the fundamental scale of SUSY breaking, this effect can destabilize the gauge hierarchy. Even in models for which kinetic mixing is suppressed or the D-terms are arranged to be small, this effect is a potentially large correction to the soft scalar masses and therefore introduces a new measurable low-energy parameter. We calculate the size of kinetic mixing both in field theory and in string theory, and argue that appreciable kinetic mixing is a generic feature of string models. We conclude that the possibility of kinetic mixing effects cannot be ignored in model building and in phenomenological studies of the low-energy SUSY spectra.

AB - The most general Lagrangian for a model with two U(1) gauge symmetries contains a renormalizable operator which mixes their gauge kinetic terms. Such kinetic mixing can be generated at arbitrarily high scales but will not be suppressed by large masses. In models whose supersymmetry (SUSY)-breaking hidden sectors contain U(1) gauge factors, we show that such terms will generically arise and communicate SUSY breaking to the visible sector through mixing with hypercharge. In the context of the usual supergravity- or gauge-mediated communication scenarios with D-terms of order the fundamental scale of SUSY breaking, this effect can destabilize the gauge hierarchy. Even in models for which kinetic mixing is suppressed or the D-terms are arranged to be small, this effect is a potentially large correction to the soft scalar masses and therefore introduces a new measurable low-energy parameter. We calculate the size of kinetic mixing both in field theory and in string theory, and argue that appreciable kinetic mixing is a generic feature of string models. We conclude that the possibility of kinetic mixing effects cannot be ignored in model building and in phenomenological studies of the low-energy SUSY spectra.

UR - http://www.scopus.com/inward/record.url?scp=0031565506&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031565506&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031565506

VL - 492

SP - 104

EP - 118

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 1-2

ER -