Status of weak scale supersymmetry after LHC Run 2 and ton-scale noble liquid WIMP searches

Baer, Howard; Barger, Vernon; Sengupta, Dibyashree; Salam, Shadman; Sinha, Kuver

doi:10.1140/epjst/e2020-000020-x

Cited by 62 publications

(48 citation statements)

References 236 publications

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“…5 -we may obtain μ m 3/2 . The latter result is welcome, since it enhances the electroweak naturalness [39] of MSSM.…”

Section: Generation Of the μ Term Of Mssmmentioning

confidence: 92%

“…A solution to the μ problem of Minimal Supersymmetric SM (MSSM) may be also achieved by suitably applying the Giudice-Masiero mechanism [37] for an updated review see Refs. [38,39]. The possibly problematic, from astrophysical point of view [40][41][42][43][44], (pseudo) Nambu-Goldstone boson named R axion [33] may acquire acceptably large mass by mildly violating the R symmetry in K H without any impact either to the minimization of the SUGRA potential or to the values of the SSB parameters.…”

Section: Introductionmentioning

confidence: 99%

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SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

Pallis

2021

Eur. Phys. J. C

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New realizations of the gravity-mediated SUSY breaking are presented consistently with an R symmetry. We employ monomial superpotential terms for the hidden-sector (goldstino) superfield and Kähler potentials parameterizing compact or non-compact Kähler manifolds. Their scalar curvature may be systematically related to the R charge of the goldstino so that Minkowski solutions without fine tuning are achieved. A mild violation of the R symmetry by a higher order term in the Kähler potentials allows for phenomenologically acceptable masses for the R axion. In all cases, non-vanishing soft SUSY-breaking parameters are obtained and a solution to the $$\mu $$ μ problem of MSSM may be accommodated by conveniently applying the Giudice–Masiero mechanism.

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“…5 -we may obtain μ m 3/2 . The latter result is welcome, since it enhances the electroweak naturalness [39] of MSSM.…”

Section: Generation Of the μ Term Of Mssmmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

Pallis

2021

Eur. Phys. J. C

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“…Supersymmetric (SUSY) models of particle physics have long been the dominant paradigm for Beyond the Standard Model physics [1,2] due to their clean solution to the gauge hierarchy problem and their capacity to explain the dark matter in the universe. They are also supported by a variety of virtual effects, including 1. gauge coupling unification [3], 2. top-Yukawa induced radiative breaking of electroweak symmetry [4], 3. agreement between theory and experiment on the mass of the newly discovered Higgs boson [5] and 4. precision electroweak measurements [6] which actually favor a (heavy) TeV-scale SUSY spectrum over the Standard Model (SM).…”

Section: Introductionmentioning

confidence: 99%

“…1 The log derivative measure was typically applied assuming multiple independent soft SUSY breaking parameters in the low energy effective field theory (EFT) which leads to overestimates of finetuning [7][8][9] compared to more complete theories wherein the soft parameters are correlated. The high scale measure ∆HS = δm 2 h /m 2 h abandons some dependent contributions which lead to cancellations when fully included [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The cosmological moduli problem and naturalness

Bae

Baer

Barger

et al. 2022

J. High Energ. Phys.

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Nowadays, the cosmological moduli problem (CMP) comes in three parts: 1. potential violation of Big-Bang nucleosynthesis (BBN) constraints from late decaying moduli fields, 2. the moduli-induced gravitino problem wherein gravitinos are overproduced and their decays violate BBN or dark matter overproduction bounds and 3. the moduli-induced lightest SUSY particle (LSP) overproduction problem. Also, the CMP may be regarded as either a problem or else a solution to scenarios with dark matter over- or under-production. We examine the cosmological moduli problem and its connection to electroweak naturalness. We calculate the various two-body decay widths of a light modulus field into MSSM particles and gravitinos within general supersymmetric models. We include both phase space and mixing effects. We examine cases without and with helicity suppression of modulus decays to gravitinos (cases 1 & 2) and/or gauginos (cases A & B). For case B1, we evaluate regions of gravitino mass m3/2 vs. modulus mass mϕ parameter space constrained by BBN, by overproduction of gravitinos and by overproduction of neutralino dark matter, along with connections to naturalness. For this case, essentially all of parameter space is excluded unless mϕ ≳ 2.5 × 103 TeV with mϕ< 2m3/2. For a potentially most propitious case B2 with ϕ decay to Higgs and matter turned off, then modulus branching fractions to SUSY and to gravitinos become highly suppressed at large mϕ. But since the modulus number density increases faster than the branching fractions decrease, there is still gross overproduction of neutralino dark matter. We also show that in this scenario the thermally produced gravitino problem is fixed by huge entropy dilution, but non-thermal gravitino production from moduli decay remains a huge problem unless it is kinematically suppressed with mϕ< 2m3/2. In a pedagogical appendix, we present detailed calculations of modulus field two-body decay widths.

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“…It has then been found that the light Higgs mass distribution dP/dm h rises to a peak at m h ∼ 125 GeV whilst sparticle masses are lifted beyond present LHC search limits [17][18][19][20] (see Ref. [28] for a recent review).…”

Section: Introductionmentioning

confidence: 99%

Radiative natural supersymmetry emergent from the string landscape

Baer,

Barger,

Martinez

et al. 2022

Preprint

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In string theory with flux compactifications, anthropic selection for structure formation from a discretuum of vacuum energy values provides at present our only understanding of the tiny yet positive value of the cosmological constant. We apply similar reasoning to a toy model of the multiverse restricted to vacua with the MSSM as the low energy effective theory. Here, one expects a statistical selection favoring large soft SUSY breaking terms leading to a derived value of the weak scale in each pocket universe (with appropriate electroweak symmetry breaking) which differs from the weak scale as measured in our universe. In contrast, the SUSY preserving µ parameter is selected uniformly on a log scale as is consistent with the distribution of SM fermion masses: this favors smaller values of µ. An anthropic selection of the weak scale to within a factor of a few of our measured value-in order to produce complex nuclei as we know them (atomic principle)-provides statistical predictions for Higgs and sparticle masses in accord with LHC measurements. The statistical selection then more often leads to (radiatively-driven) natural SUSY models over the Standard Model or finely-tuned SUSY models such as mSUGRA/CMSSM, split, mini-split, spread, high scale or PeV SUSY. The predicted Higgs and superparticle spectra might be testable at HL-LHC via higgsino pair production but is certainly testable at higher energy hadron colliders with √ s ∼ 30 − 100 TeV.

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Status of weak scale supersymmetry after LHC Run 2 and ton-scale noble liquid WIMP searches

Cited by 62 publications

References 236 publications

SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

The cosmological moduli problem and naturalness

Radiative natural supersymmetry emergent from the string landscape

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