Theory vision

Salam, Gavin P.

doi:10.22323/1.321.0304

Cited by 8 publications

(10 citation statements)

References 25 publications

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“…Here, we show naive extrapolations of our limits to 300 fb −1 and 3 ab −1 of integrated luminosity (assuming either 13 and 14 TeV collisions), corresponding approximately to the end of the regular LHC operations and the ultimate end of the HL-LHC runs, respectively. Our methodology is the same as [28] (we thank A. Weiler for some clarifications in this regard). We assume that the signal cross section is controlled by a single mass scale m, and that signal efficiencies and background counts remain constant as the integrated luminosity L and/or center-of-mass (CM) energy √ s are increased.…”

Section: Summary Of Results and Further Implicationsmentioning

confidence: 99%

“…The green line is the projected improvement for limit which currently excluded a 100 GeV particle, the red line assumes a 200 GeV present limit, and the blue line assumes 500 GeV. The projection technique is as described in the text and [28]. Note the transition from linear to log scale at 300 fb −1 .…”

Section: Summary Of Results and Further Implicationsmentioning

confidence: 99%

“…We conclude by showing rough estimates of the LHC reach for sparticles through 300 fb −1 and 3 ab −1 , using an extrapolation based on the method of [28]. As will be seen, we are situated at approximately the middle of the rapid rise in the superpartner reach due to the increased LHC energy; after reaching approximately 50 fb −1 of data (tentatively expected for Moriond 2017), the LHC will have spent most of its energy boost and additional coverage will be slower and more incremental.…”

Section: Introductionmentioning

confidence: 94%

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Cornering natural SUSY at LHC Run II and beyond

Buckley

Feld

Macaluso

et al. 2017

J. High Energ. Phys.

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Abstract:We derive the latest constraints on various simplified models of natural SUSY with light higgsinos, stops and gluinos, using a detailed and comprehensive reinterpretation of the most recent 13 TeV ATLAS and CMS searches with ∼ 15 fb −1 of data. We discuss the implications of these constraints for fine-tuning of the electroweak scale. While the most "vanilla" version of SUSY (the MSSM with R-parity and flavor-degenerate sfermions) with 10% fine-tuning is ruled out by the current constraints, models with decoupled valence squarks or reduced missing energy can still be fully natural. However, in all of these models, the mediation scale must be extremely low (< 100 TeV). We conclude by considering the prospects for the high-luminosity LHC era, where we expect the current limits on particle masses to improve by up to ∼ 1 TeV, and discuss further model-building directions for natural SUSY that are motivated by this work.

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Section: Summary Of Results and Further Implicationsmentioning

confidence: 99%

Section: Summary Of Results and Further Implicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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Cornering natural SUSY at LHC Run II and beyond

Buckley

Feld

Macaluso

et al. 2017

J. High Energ. Phys.

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“…In doing so, at a given lifetime we shift the Run-1 value of the 95% CL reach for the wino mass to the higher value at which the wino cross-section times luminosity (13,300 and 3000 fb −1 ) at the 13-TeV LHC coincides with the reach achieved during Run-1. This method is often used and is known to give a reasonable estimate [51]. We find that the disappearing-track search is more sensitive in the µ > 0 case than in the µ < 0 case because, in order to accommodate the reduced 0.0 0.5 Figure 19.…”

Section: Discovery Prospects At the Lhc And Fcc-hhmentioning

confidence: 93%

Likelihood analysis of the minimal AMSB model

et al. 2017

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We perform a likelihood analysis of the minimal anomaly-mediated supersymmetry-breaking (mAMSB) model using constraints from cosmology and accelerator experiments. We find that either a wino-like or a Higgsino-like neutralino LSP, , may provide the cold dark matter (DM), both with similar likelihoods. The upper limit on the DM density from Planck and other experiments enforces after the inclusion of Sommerfeld enhancement in its annihilations. If most of the cold DM density is provided by the , the measured value of the Higgs mass favours a limited range of (and also for if ) but the scalar mass is poorly constrained. In the wino-LSP case, is constrained to about and to , whereas in the Higgsino-LSP case has just a lower limit () and is constrained to in the () scenario. In neither case can the anomalous magnetic moment of the muon, , be improved significantly relative to its Standard Model (SM) value, nor do flavour measurements constrain the model significantly, and there are poor prospects for discovering supersymmetric particles at the LHC, though there are some prospects for direct DM detection. On the other hand, if the contributes only a fraction of the cold DM density, future LHC -based searches for gluinos, squarks and heavier chargino and neutralino states as well as disappearing track searches in the wino-like LSP region will be relevant, and interference effects enable to agree with the data better than in the SM in the case of wino-like DM with .

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“…is kinematically open. Finally, one can establish a rough estimate on the future mass reach at LHC using the ColliderReach tool for extrapolations [88]. We find that by Run 3, with 300 fb −1 , this value should rise to about 5 TeV.…”

Section: E Direct Searches At Lhcmentioning

confidence: 91%

Lepton flavor non-universality in B decays from dynamical Yukawas

et al. 2017

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The basic features of quark and lepton mass matrices can be successfully explained by natural minima of a generic potential with dynamical Yukawa fields invariant under the [SU(3)] 5 × O(3) flavor symmetry. If this symmetry is gauged, in order to avoid potentially dangerous Goldstone bosons, and small perturbations are added to exactly fit the observed pattern of fermion masses, the spectrum of massive flavor gauge bosons can naturally explain the hints for new physics in b → s + − transitions, including RK . In particular, the desired pattern of the Standard Model Yukawa couplings is compatible with a gauged U(1) q in the quark sector, and U(1) µ−τ in the lepton sector spontaneously broken around the TeV scale. In order to explain the aforementioned experimental hints, the corresponding neutral gauge bosons are required to mix, yielding to potentially observable signals in dimuon resonance searches at the LHC.

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Theory vision

Cited by 8 publications

References 25 publications

Cornering natural SUSY at LHC Run II and beyond

Cornering natural SUSY at LHC Run II and beyond

Likelihood analysis of the minimal AMSB model

Lepton flavor non-universality in B decays from dynamical Yukawas

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