Signatures of massive sgoldstinos at hadron colliders

Perazzi, Elena; Ridolfi, Giovanni; Zwirner, Fabio

doi:10.1016/s0550-3213(00)00504-6

Cited by 44 publications

(50 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dominating production mechanism of sgoldstino at high energy pp collisions is gluon-gluon fusion [11,12] for typical hierarchy of soft supersymmetry breaking parameters: gluino is the heaviest gaugino while the soft trilinear couplings are of the same size as M i . The production cross section σ S is related to the decay of sgoldstino to gluons Γ(S → gg) = M 2 3 m 3 S 4πF 2 which is typically the main decay channel for √ F at TeV scale and m S < √ F which we will assume in what follows.…”

Section: Exploring the Modelmentioning

confidence: 99%

See 1 more Smart Citation

On the sgoldstino interpretation of the diphoton excess

Demidov

Gorbunov

2016

Jetp Lett.

View full text Add to dashboard Cite

show abstract

Section: Exploring the Modelmentioning

confidence: 99%

“…Interactions of the latter with the Standard Model particles are determined by soft supersymmetry breaking parameters and suppressed by the supersymmetry breaking scale √ F . Collider phenomenology of sgoldstinos with masses of order electroweak scale have been discussed for instance in [10,11,12,13,14,15,16,17,18]. In Refs.…”

Section: Introductionmentioning

confidence: 99%

On the sgoldstino interpretation of the diphoton excess

Demidov

Gorbunov

2016

Jetp Lett.

View full text Add to dashboard Cite

show abstract

“…• The sgoldstino masses are of order the electroweak scale, while √ F ∼ 1 TeV -sgoldstinos may then be produced at high-energy colliders [198,199] (see section 3 of Ref. [200] for a sketch of the sgoldstino collider phenomenology).…”

Section: Phenomenology Of the Modelmentioning

confidence: 99%

The Beyond the Standard Model Working Group: Summary Report

Azuelos¹,

Gunion²,

Hewett³

et al. 2002

View full text Add to dashboard Cite

“…If sgoldstino masses are of the order of electroweak scale and √ F ∼ 1 TeV -sgoldstino may be detected in collisions of high energy particles at supercolliders [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…In this letter we consider A ab = A and Yukawas y ab ∝ δ ab as in SM. At hadron colliders sgoldstinos will be produced mostly by gluon resonant scattering gg → S(P ) [5]. The associated production gg → S(P )g has several times smaller cross section than resonant production and the corresponding discovery potential (in analogy with SM Higgs boson case) is expected to be weaker than the discovery potential for the resonant mode gg → S(P ).…”

mentioning

confidence: 99%

Prospects for sgoldstino search at the LHC

Gorbunov

Krasnikov

2002

J. High Energy Phys.

View full text Add to dashboard Cite

In this paper we estimate the LHC sgoldstino discovery potential for the signatures with γγ and ZZ in a final state.It is well known, that exist models of supergravity breaking with relatively light sgoldstinos (scalar S and pseudoscalar P particles -superpartners of goldstino ψ). Such pattern emerges in a number of non-minimal supergravity models [1] and also in gauge mediation models if supersymmetry is broken via non-trivial superpotential (see, Ref.[2] and references therein). To the leading order in 1/F , where F is the parameter of supersymmetry breaking, and to zero order in MSSM gauge and Yukawa coupling constants, the interactions between the component fields of goldstino supermultiplet and MSSM fields have been derived in Ref. [3]. They correspond to the most attractive for collider studies processes where only one of these new particles appears in a final state. In this case light gravitino behaves exactly as goldstino. For sgoldstinos, as they are R-even, only sgoldstino couplings to goldstino and sgoldstino couplings to SM fields have been included as the most interesting phenomenologically.All relevant sgoldstino coupling constants presented in Ref.[3] are completely determined by the MSSM soft terms and the parameter of supersymmetry breaking F , but sgoldstino masses (m S , m P ) remain free. If sgoldstino masses are of the order of electroweak scale and √ F ∼ 1 TeV -sgoldstino may be detected in collisions of high energy particles at supercolliders [4,5].There are flavor-conserving and flavor-violating interactions of sgoldstino fields. As concerns flavor-conserving interactions, the strongest bounds arise from astrophysics and cosmology, that is √ F 10 6 GeV [6,7], or m 3/2 > 600 eV, for models with m S(P ) < 10 keV and MSSM soft flavor-conserving terms being of the order of electroweak scale. For the intermediate sgoldstino masses (up to a few MeV) constraints from the study of SN explosions and reactor experiments lead to √ F 300 TeV [7]. For heavier sgoldstinos, low energy processes (such as rare decays of mesons) provide limits at the level of √ F 500 GeV [7]. The collider experiments exhibit the same level of sensitivity to light sgoldstinos as rare meson decays. Indeed the studies [8,9,10,11] of the light sgoldstino (m S,P a f ew MeV) phenomenology based on the effective low-energy Lagrangian derived from N=1 linear supergravity yield the bounds: √ F 500 GeV (combined bound on Z → Sf f, Pf f [10]; combined bound on e + e − → γS, γP [9]) at M sof t ∼ 100 GeV, √ F 1 TeV [11] (combined bound on pp → gS, gP ) at gluino mass M 3 ≃ 500 GeV. Searches for heavier sgoldstinos at colliders, though exploiting another technique, results in similar bounds on the scale of supersymmetry breaking. Most powerful among the operating machines, LEP and Tevatron, give a constraint of the order of 1 TeV on supersymmetry breaking scale in models with light sgoldstinos. Indeed, the analysis carried out by DELPHI Collaboration [12] yields the limit 1

show abstract

Signatures of massive sgoldstinos at hadron colliders

Cited by 44 publications

References 50 publications

On the sgoldstino interpretation of the diphoton excess

On the sgoldstino interpretation of the diphoton excess

The Beyond the Standard Model Working Group: Summary Report

Prospects for sgoldstino search at the LHC

Contact Info

Product

Resources

About