LHC benchmarks from flavored gauge mediation

Ierushalmi, Niv; Iwamoto, Sho; Lee, G.; Nepomnyashy, V.; Shadmi, Yael

doi:10.1007/jhep07(2016)058

Cited by 7 publications

(1 citation statement)

References 111 publications

(201 reference statements)

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“…With mass splittings between the squarks, the fermion Cabibbo mixing will typically translate into up-charm mixing of the left-handed squarks; for concrete spectra, see, e.g., Ref. [27]. Measuring the charm fraction will yield information on the squark flavor composition.…”

Section: Discussionmentioning

confidence: 99%

Tagging new physics with charm

Iwamoto

Lee

Shadmi

et al. 2017

J. High Energ. Phys.

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We propose a new variable, the charm fraction, for collider searches for new physics. We analyze this variable in the context of searches for simplified supersymmetry models with squarks, the gluino, and the bino, assuming that only the lightest massdegenerate squarks can be produced at the high-luminosity LHC. The charm fraction complements event counting and kinematic information, increasing the sensitivity of the searches for models with heavy gluinos, for which squark production is flavor-blind. If squarks are discovered at the LHC, this variable can help discriminate between different underlying models. In particular, with improved charm tagging, the charm fraction can provide information on the gluino mass, and in some scenarios, on whether this mass is within the reach of a future 100 TeV hadron collider.

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Section: Discussionmentioning

confidence: 99%

Tagging new physics with charm

Iwamoto

Lee

Shadmi

et al. 2017

J. High Energ. Phys.

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Gauge mediation at the LHC: status and prospects

Knapen

Redigolo

2017

J. High Energ. Phys.

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We show that the predictivity of general gauge mediation (GGM) with TeVscale stops is greatly increased once the Higgs mass constraint is imposed. The most notable results are a strong lower bound on the mass of the gluino and right-handed squarks, and an upper bound on the Higgsino mass. If the µ-parameter is positive, the wino mass is also bounded from above. These constraints relax significantly for high messenger scales and as such long-lived NLSPs are favored in GGM. We identify a small set of most promising topologies for the neutralino/sneutrino NLSP scenarios and estimate the impact of the current bounds and the sensitivity of the high luminosity LHC. The stau, stop and sbottom NLSP scenarios can be robustly excluded at the high luminosity LHC.

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Sizable stop mixing in flavored gauge mediation models with discrete non-Abelian symmetries

2019

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We analyze a minimal flavored gauge mediation model in which the electroweak Higgs and messenger doublets are embedded in multiplets of a discrete non-Abelian symmetry. In this scenario, the minimal Higgs-messenger sector that is consistent with the 125 GeV Higgs mass has two vectorlike pairs of messenger fields. This scenario is obtained in a specific limit of the superpotential interactions of the Higgs-messenger fields and the matter fields. Due to the structure of the messenger-matter Yukawa couplings in this limit, sizable stop mixing and flavor-diagonal soft supersymmetry breaking parameters are achieved. In most of the parameter space, the masses of the colored superpartners are at most in the 5 − 6 TeV range. I. INTRODUCTIONThe 2012 discovery of the 125 GeV Higgs particle [1,2] and subsequent detailed measurements of its properties at the Large Hadron Collider (LHC) has provided significant limits on the allowed possibilities for extensions of the Standard Model (SM). In the context of theories with softly broken supersymmetry at the TeV scale (for reviews, see e.g. [3,4]), the Higgs mass is known to be within the theoretically allowed range for perturbative theories, but its relatively high value either requires large radiative corrections in the minimal supersymmetric standard model (MSSM), or an enlarged Higgs sector to boost the tree-level contributions. As such, it has long been known in the MSSM that large stop mixing or very heavy stops are needed (see e.g. [5]). This can place stringent constraints on specific models of the soft supersymmetry breaking terms, and also has important implications for the potential observability of superpartners at the LHC.The model-building constraints imposed by the Higgs measurements are particularly striking in the context of gauge mediation. In its minimal implementation, gauge-mediated supersymmetry breaking [6-9] predicts highly suppressed scalar trilinear couplings (A terms) at the messenger *

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LHC benchmarks from flavored gauge mediation

Cited by 7 publications

References 111 publications

Tagging new physics with charm

Tagging new physics with charm

Gauge mediation at the LHC: status and prospects

Sizable stop mixing in flavored gauge mediation models with discrete non-Abelian symmetries

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