Revisiting mGMSB in light of a 125 GeV Higgs

Ajaib, Muhammad Adeel; Gogoladze, Ilia; Nasir, Fariha; Shafi, Qaisar

doi:10.1016/j.physletb.2012.06.036

Cited by 58 publications

(10 citation statements)

References 40 publications

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“…We define the physical masses of the charginos and neutralinosχ i according to the real part of the complex pole 20) where Γχ i is the width of particleχ i . The physical mass at the one-loop level, Mχ i , in general differs from the tree-level mass, mχ i , by a finite amount, ∆mχ i , which is obtained…”

Section: Jhep05(2013)053mentioning

confidence: 99%

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Bharucha

Fowler

Moortgat‐Pick

et al. 2013

J. High Energ. Phys.

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Abstract:We extend the formalism developed in ref. [53] for the renormalisation of the chargino-neutralino sector to the most general case of the MSSM with complex parameters. We show that products of imaginary parts arising from MSSM parameters and from absorptive parts of loop integrals can already contribute to predictions for physical observables at the one-loop level, and demonstrate that the consistent treatment of such contributions gives rise to non-trivial structure, either in the field renormalisation constants or the corrections associated with the external legs of the considered diagrams. We furthermore point out that the phases of the parameters in the chargino-neutralino sector do not need to be renormalised at the one-loop level, and demonstrate that the appropriate choice for the mass parameters used as input for the on-shell conditions depends both on the process and the region of MSSM parameter space under consideration. As an application, we compute the complete one-loop results in the MSSM with complex parameters for the process h a →χ + iχ − j (Higgs-propagator corrections have been incorporated up to the two-loop level), which may be of interest for SUSY Higgs searches at the LHC, and for chargino pair-production at an e + e − Linear Collider, e + e − →χ + iχ − j . We investigate the dependence of the theoretical predictions on the phases of the MSSM parameters, analysing in particular the numerical relevance of the absorptive parts of loop integrals.

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Section: Jhep05(2013)053mentioning

confidence: 99%

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Bharucha

Fowler

Moortgat‐Pick

et al. 2013

J. High Energ. Phys.

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“…For recent studies of 2011 Tevatron and LHC results within the context of a supersymmetric Higgs sector, see Refs. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Are there hints of light stops in recent Higgs search results?

Buckley

2012

Phys. Rev. D

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The recent discovery at the LHC by the CMS and ATLAS collaborations of the Higgs boson presents, at long last, direct probes of the mechanism for electroweak symmetry breaking. While it is clear from the observations that the new particle plays some role in this process, it is not yet apparent whether the couplings and widths of the observed particle match those predicted by the Standard Model. In this paper, we perform a global fit of the Higgs results from the LHC and Tevatron. While these results could be subject to as-yet-unknown systematics, we find that the data are significantly better fit by a Higgs with a suppressed width to gluon-gluon and an enhanced width to , relative to the predictions of the Standard Model. After considering a variety of new physics scenarios which could potentially modify these widths, we find that the most promising possibility is the addition of a new colored, charged particle, with a large coupling to the Higgs. Of particular interest is a light, and highly mixed, stop, which we show can provide the required alterations to the combination of gg and widths.

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“…Both the ATLAS and CMS collaborations have studied these signal regions for a hint of GMSB-like scenarios [41][42][43][44][45][46][47][48]. Note that, a pure GMSB like scenario is now under tension after the discovery of the 125 GeV Higgs boson [49][50][51]. It is very difficult to fit a light Higgs boson within this minimal framework, mostly because of small mixing in the scalar sector.…”

Section: Compressed Spectrum With a Gravitino Lspmentioning

confidence: 99%

Search for a compressed supersymmetric spectrum with a light gravitino

Dutta

Konar

Mondal

et al. 2017

J. High Energ. Phys.

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Presence of the light gravitino as dark matter candidate in a supersymmetric (SUSY) model opens up interesting collider signatures consisting of one or more hard photons together with multiple jets and missing transverse energy from the cascade decay. We investigate such signals at the 13 TeV LHC in presence of compressed SUSY spectra, consistent with the Higgs mass as well as collider and dark matter constraints. We analyse and compare the discovery potential in different benchmark scenarios consisting of both compressed and uncompressed SUSY spectra, considering different levels of compression and intermediate decay modes. Our conclusion is that compressed spectra upto 2.5 TeV are likely to be probed even before the high luminosity run of LHC. Kinematic variables are also suggested, which offer distinction between compressed and uncompressed spectra yielding similar event rates for photons + multi-jets + E / T .

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Revisiting mGMSB in light of a 125 GeV Higgs

Cited by 58 publications

References 40 publications

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Are there hints of light stops in recent Higgs search results?

Search for a compressed supersymmetric spectrum with a light gravitino

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