Minimal anomalous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msup><mml:mo stretchy="false">)</mml:mo><mml:mo>′</mml:mo></mml:msup></mml:math>extension of the MSSM

Anastasopoulos, Pascal; Fucito, F.; Lionetto, Andrea; Pradisi, Gianfranco; Racioppi, Antonio; Stanev, Yassen S.

doi:10.1103/physrevd.78.085014

Cited by 84 publications

(120 citation statements)

References 91 publications

(49 reference statements)

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“…The generalization to the supersymmetric case of these theories is interesting on several grounds. For instance, it allows to study an entire new class of extensions of the MSSM in the presence of a gauging of the axionic symmetries [10] and, at the same time, represents an intermediate step toward the unification with gravity of the same models, within certain formulations of supergravity [11,12]. The formulation of [10], which is specific for a MSSM superpotential parallels a previous general study of the same topic contained in [11].…”

Section: Introductionmentioning

confidence: 68%

“…We briefly describe the class of models that we are going to investigate, outlining their basic structure, together with their supersymmetric generalizations. Along the way, we will underline the differences between our construction and the previous construction of [10]. We show how a physical axion is bound to appear in the spectrum and describe all the sectors of this theory.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, an extension of the MSSM containing an anomalous U (1), made massive by a Stückelberg supermultiplet [14] has been introduced in [10]. This has been based on the superpotential of the MSSM with an extra abelian symmetry.…”

Section: Introductionmentioning

confidence: 99%

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Light supersymmetric axion in an anomalous Abelian extension of the standard model

et al. 2009

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We present a supersymmetric extension of the Standard Model (USSM-A) with an anomalous U (1) and Stückelberg axions for anomaly cancellation, generalizing similar non-supersymmetric constructions. The model, built by a bottom-up approach, is expected to capture the low-energy supersymmetric description of axionic symmetries in theories with gauged anomalous abelian interactions, previously explored in the non-supersymmetric case for scenarios with intersecting branes. The choice of a USSM-like superpotential, with one extra singlet superfield and an extra abelian symmetry, allows a physical axion-like particle in the spectrum. We describe some general features of this construction and in particular the modification of the dark-matter sector which involves both the axion and several neutralinos with an axino component. The axion is expected to be very light in the absence of phases in the superpotential but could acquire a mass which can also be in the few GeV range or larger. In particular, the gauging of the anomalous symmetry allows independent mass/coupling interaction to the gauge fields of this particle, a feature which is absent in traditional (invisible) axion models. We comment on the general implications of our study for the signature of moduli from string theory due to the presence of these anomalous symmetries.

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Section: Introductionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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Light supersymmetric axion in an anomalous Abelian extension of the standard model

et al. 2009

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“…[10][11][12][13][14][15][16][17][18][19][20][21][22][23]), Kaluza Klein states (see, e.g. [24][25][26][27][28][29][30]), or purely stringy signatures (see, e.g.…”

Section: Jhep12(2014)059mentioning

confidence: 99%

Production of light stringy states

Anastasopoulos¹,

Richter

2014

J. High Energ. Phys.

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Abstract:We discuss the direct production of light stringy states. Those states correspond to the lightest stringy excitations localized at the intersection of two D-brane stacks and their mass can be parametrically smaller than the string scale. Thus in a low string scale scenario one may observe stringy signatures at LHC even in the absence of the usual string resonances. We compute the tree level string scattering amplitude involving two gauge bosons and two such light stringy states. We give the squared amplitude summed over all polarization and gauge configuration and eventually apply the result to the quark sector of a D-brane realization of the Standard Model.

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“…The B − L models are among the most popular example, and satisfy these requirements by considering a very heavy Z . On the other hand, string inspired models propose an anomaly cancellation a la Green-Schwarz [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] where a very light U(1) X mediator is generated with the use of axionic couplings and generalized ChernSimons terms, or via Stueckelberg realization of the Z boson [8,[42][43][44]. Another option is to consider neutral Standard Model fermions under the new gauge group U(1) X [11].…”

Section: Introductionmentioning

confidence: 99%

LHC signatures of a Z ′ mediator between dark matter and the SU(3) sector

Ducu

Heurtier

Maurer

2016

J. High Energ. Phys.

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Abstract:In this paper, we study the experimental signatures of a gluophilic Z at the LHC, in particular through the analysis of three jets or four tops events. The Z couples to gluons through dimension six operators and the parameter space is constrained with experimental searches released at 7 and 8 TeV by CMS along these two different channels. Existing constraints coming from the study of dark matter where the Z represents a possible mediator between the latter and the Standard Model are also included for comparison. Prospects at √ s = 13 TeV allow us to evaluate for which values of the parameter space a gluophilic Z could be discovered during the next run of the LHC. In particular, we show that the analysis of the three jets invariant mass could provide a clear signal (> 5σ) for masses of the Z above 300 GeV. Four tops events bring in addition further discovery potential for heavy Z (above ∼ 2 TeV). A combination of both signals in four top channels and three jets analyses during the next run of the LHC could thus provide a clear signal of the presence of a heavy gluophilic Z .

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Minimal anomalousU(1)′extension of the MSSM

Cited by 84 publications

References 91 publications

Light supersymmetric axion in an anomalous Abelian extension of the standard model

Light supersymmetric axion in an anomalous Abelian extension of the standard model

Production of light stringy states

LHC signatures of a Z ′ mediator between dark matter and the SU(3) sector

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