Sparticle spectroscopy

Faraggi, Alon E.; Hagelin, John S.; Kelley, Stephen; Nanopoulos, Dimitri V.

doi:10.1103/physrevd.45.3272

Cited by 144 publications

(501 citation statements)

References 21 publications

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“…This has been studied within supersymmetric GUT frameworks such as SO (10) and PatiSalam SU(4) × SU(2) R × SU(2) L [166,158,167,168,169]. For example, within the Pati-Salam model the D term corrections must be included because they leave an imprint in the scalar masses of the charges carried by the broken GUT generator (these charges determine the coefficients of the g 2 terms above).…”

Section: The Ubiquitous Tan βmentioning

confidence: 99%

“…For example, within the Pati-Salam model the D term corrections must be included because they leave an imprint in the scalar masses of the charges carried by the broken GUT generator (these charges determine the coefficients of the g 2 terms above). Therefore the analysis of the sparticle spectra [169] might reveal the nature of the GUT symmetry breaking pattern. In addition, they split the soft Higgs masses by 22) where g X is the gauge coupling constant defined at GUT scale.…”

Section: The Ubiquitous Tan βmentioning

confidence: 99%

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The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general minimal supersymmetric standard model (MSSM). Extensions to include neutrino masses and nonminimal theories are also discussed. Topics covered include models of supersymmetry breaking, phenomenological constraints from electroweak symmetry breaking, flavor/CP violation, collider searches, and cosmological constraints including dark matter and implications for baryogenesis and inflation.

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Section: The Ubiquitous Tan βmentioning

confidence: 99%

Section: The Ubiquitous Tan βmentioning

confidence: 99%

The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

View full text Add to dashboard Cite

show abstract

“…Since we are otherwise ignorant of the size of D 2 we will take it to be a free parameter in our subsequent analysis, although we will take it to be relatively small. For SO (10), including the D-term contributions to the sfermion and Higgs masses, we obtain the well-known GUT scale inputs for the sfermion and Higgs soft SUSY breaking masses [22,23,26,27,62]:…”

Section: So(10) Breaking and Scalar Massesmentioning

confidence: 99%

“…Additional D-term contributions to the soft mass matrices arise from the reduction of rank of the gauge group, associated with a broken U(1) generator proportional to 2I R + 3(B − L)/2 where I R is the 3rd component of weak isospin pertaining to the SU(2) R subgroup of SO (10) and (B − L) is the difference between baryon and lepton number [22,23,26,27,62]. The sfermion and Higgs soft masses squared each receive a contribution proportional to a quantity D 2 , which can be positive or negative, that parametrizes the D-term contribution from the breaking of the GUT group.…”

Section: Introductionmentioning

confidence: 99%

“…With certain simplifying assumptions it is possible to construct models of supergravity that lead to this preferred form for the soft breaking parameters. However, supergravity theories by no means inevitably predict this universality and, in any case, universality is readily violated below the supergravity scale by corrections deriving from, for example, renormalization group running between the supergravity/Planck scale and the GUT scale [19,20] or from the breaking of GUT [20,21,22,23,24,25,26,27,28,29] and/or family symmetries [30,31,32,33,34,35,36,37,38].…”

Section: Introductionmentioning

confidence: 99%

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Effects of SO(10)-inspired scalar non-universality on the MSSM parameter space at largetanβ

Ramage

2005

Nuclear Physics B

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We analyze the parameter space of the (µ > 0, A 0 = 0) CMSSM at large tan β with a small degree of non-universality originating from D-terms and Higgs-sfermion splitting inspired by SO(10) GUT models. The effects of such non-universalities on the sparticle spectrum and observables such as (g − 2) µ , B(b → X s γ), the SUSY threshold corrections to the bottom mass and Ω CDM h 2 are examined in detail and the consequences for the allowed parameter space of the model are investigated. We find that even small deviations to universality can result in large qualitative differences compared to the universal case; for certain values of the parameters, we find, even at low m 1/2 and m 16 , that radiative electroweak symmetry breaking fails as a consequence of either |µ| 2 < 0 or m 2 A 0 < 0. We find particularly large departures from the mSugra case for the neutralino relic density, which is sensitive to significant changes in the position and shape of the A 0 resonance and a substantial increase in the Higgsino component of the LSP. However, we find that the corrections to the bottom mass are not sufficient to allow for Yukawa unification.

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Connecting string/Mtheory to the electroweak scale and to LHC data

Kumar

2007

Fortschritte der Physik

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The Standard Model of particle physics explains (almost) all observed non‐gravitational microscopic phenomena but has many open theoretical questions. We are on the threshold of unravelling the mysteries of the Standard Model and discovering its extension. This could be achieved in the near future with the help of many experiments in particle physics and cosmology, the LHC in particular. Assuming that data confirming the existence of new physics beyond the Standard Model is obtained, one is left with the very important and challenging task of solving the “Inverse Problem”, viz. “How can one deduce the nature of the underlying (perhaps microscopic) theory from data?” This paper explores this question in detail, and also proposes an approach to address the problem in a meaningful way which could prove crucial to the possible solution to this problem in the future. The proposed approach has three aspects – a) To systematically study classes of microscopic (string/M theory) constructions to the extent that they could be connected to low energy physics (electroweak scale), b) To find patterns of experimental observables which are sensitive to the properties of the underlying theoretical constructions thereby allowing us to distinguish among different constructions, and c) To try to get insights about the qualitative features of the theoretical model from data in a bottom‐up approach which complements the top‐down approach and strengthens it as well. This paper studies all the above aspects in detail. The methods used and results obtained in this paper will hopefully be of great importance in solving the Inverse Problem.

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Sparticle spectroscopy

Cited by 144 publications

References 21 publications

The soft supersymmetry-breaking Lagrangian: theory and applications

The soft supersymmetry-breaking Lagrangian: theory and applications

Effects of SO(10)-inspired scalar non-universality on the MSSM parameter space at largetanβ

Connecting string/Mtheory to the electroweak scale and to LHC data

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