Radiatively generated source of flavor universal scalar soft masses

Chakraborty, Sabyasachi; Roy, T.

doi:10.1103/physrevd.100.035020

Cited by 9 publications

(11 citation statements)

References 76 publications

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“…where M 1 and M 2 are the soft SUSY-breaking masses for the U(1) Y and the SU(2) L gauginos, i.e., the bino and the wino, respectively, while the same for the singlino, appearing in the (5,5) element, is given by m S = 2κv S . The neutralino mass-eigenstates (χ 0 i , i = 1, 2, .…”

Section: The Ewino Sectormentioning

confidence: 99%

“…Furthermore, its efficient coannihilations with a sfermion and/or an JHEP04(2021)122 ewino are also not possible if we assume the latter ones to be much heavier than the LSP. Thus, for a light enough bino-like LSP (say m χ 0 1 200 GeV), the only way it could become a viable DM candidate is if it acquires some higgsino admixture and if m χ 0 5 This is true in the NMSSM as well but now with a further possibility that the SM-like Higgs funnel could get efficient if, in addition, there is some singlino admixture in the LSP. Notably, there could be additional funnels available thanks to relatively light singlet-like scalars of the NMSSM which can be either heavier than h SM or lighter than the Z-boson or could even have a mass in between m Z and m h SM .…”

Section: The Interplay Of the Scalars And The Ewinosmentioning

confidence: 99%

“…It is well-known in the context of the Minimal Supersymmetric extension of the Standard Model (MSSM) that a pure bino ( B) neutralino as the Lightest Supersymmetric Particle (LSP; χ 0 1 ) and a Weakly Interacting Massive Particle (WIMP) could be a viable cold Dark Matter (DM) candidate, which is a thermal relic, under two specific situations: (i) if it is lighter than ∼ 100 GeV and some sfermions (in particular, the right-handed sleptons with large hypercharge coupling; such light squarks being ruled out long back) are not much heavier than 100 GeV such that the so-called bulk (t-channel) annihilation of a pair JHEP04(2021)122 of DM states mediated by such sfermions are optimally efficient [1][2][3][4] and/or (ii) if there is an efficient coannihilation of such a DM state with slepton(s) ( ) with m χ 0 1 ≡ m B ∼ m 500 GeV when the sleptons are degenerate [5,6]. However, requiring such a pure bino DM (the lightest neutralino, χ 0 1 ) to be relatively light, i.e., m B ∼ 100 GeV, both the possibilities are found to be practically ruled out by the Large Hadron Collider (LHC) experiments [7,8] save for the cases with light staus with comparable mass [9].…”

Section: Introductionmentioning

confidence: 99%

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A relatively light, highly bino-like dark matter in the Z3-symmetric NMSSM and recent LHC searches

Abdallah

Datta

Roy

2021

J. High Energ. Phys.

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A highly bino-like Dark Matter (DM), which is the Lightest Supersymmetric Particle (LSP), could be motivated by the stringent upper bounds on the DM direct detection rates. This is especially so when its mass is around or below 100 GeV for which such a bound tends to get most severe. Requiring not so large a higgsino mass parameter, that would render the scenario reasonably ‘natural’, prompts such a bino-like state to be relatively light. In the Minimal Supersymmetric Standard Model (MSSM), in the absence of comparably light scalars, such an excitation, if it has to be a thermal relic, is unable to meet the stringent experimental upper bound on its abundance unless its self-annihilation hits a funnel involving either the Z-boson or the Standard Model (SM)-like Higgs boson. We demonstrate that, in such a realistic situation, a highly bino-like DM of the popular Z3-symmetric Next-to-Minimal Supersymmetric Standard Model (NMSSM) is viable over an extended range of its mass, from our targeted maximum in the vicinity of the mass of the top quark down to about 30 GeV. This is facilitated by the presence of comparably light singlet-like states that could serve as funnel (scalars) and/or coannihilating (singlino) states even as the bino-like LSP receives a minimal (but optimal) tempering triggered by suitably light higgsino states that, in the first place, evade stringent lower bounds on their masses that can be derived from the Large Hadron Collider (LHC) experiments only in the presence of a lighter singlino-like state. An involved set of blind spot conditions is derived for the DM direct detection rates by considering for the very first time the augmented system of neutralinos comprising of the bino, the higgsinos and the singlino which highlights the important roles played by the NMSSM parameters ‘λ’ and tan β in delivering a richer phenomenology.

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Section: The Ewino Sectormentioning

confidence: 99%

Section: The Interplay Of the Scalars And The Ewinosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A relatively light, highly bino-like dark matter in the Z3-symmetric NMSSM and recent LHC searches

Abdallah

Datta

Roy

2021

J. High Energ. Phys.

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“…So, it can render the parameter space to be consistent with recent DM results as well as t − b − τ YU. Further, the effects of the NH terms in Renormalization Group Equations (RGE) of the Higgs SSB masses [20,22,37] may help to satisfy the REWSB with YU. With these motivations, we probe in this work the third family (t − b − τ ) YU in NHSSM framework with fully universal boundary conditions at the GUT scale.…”

Section: Introductionmentioning

confidence: 99%

t − b − τ Yukawa unification in non-holomorphic MSSM

Hiçyılmaz

2021

J. High Energ. Phys.

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We show that in the CMSSM with the non-holomorphic soft SUSY breaking terms, the Yukawa coupling unification of the third family fermions at the GUT scale, called t − b − τ Yukawa unification (YU), is possible under the recent collider and Dark Matter results. The YU parameter can also be found Rtbτ≈ 1, called perfect unification. We find that the squark masses exceed 3 TeV while the stau can be considerably lighter. In the case of YU, the tan β is in the interval [46,55]. We obtain bino-like dark matter (DM) of mass in the range of 0.6 TeV ≲ $$ {m}_{\upchi_1^0} $$ m χ 1 0 ≲ 1.3 TeV where the recent Dark Matter direct detection limits are also satisfied. We also identify A-resonance solutions which reduce the relic abundance of LSP neutralino down to the ranges compatible with the current Planck measurements.

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“…In this backdrop, a renewed impetus for carrying out such studies can now be drawn from the recent discourses of an otherwise MSSM scenario but for the presence of additional 'nonholomorphic' soft terms in its Lagrangian which goes by the name of Nonholomorphic Supersymmetric Standard Model (NHSSM) [7][8][9][10][11][12][13][14][15][16]. It is further known that the presence of generic nonholomorphic terms like A f φ * φ could have important implications [17].…”

mentioning

confidence: 99%

Associated production of heavy Higgs bosons with a $b\bar{b}$ pair in the Nonholomorphic MSSM and LHC searches

Chattopadhyay¹,

Datta²,

Mukherjee³

et al. 2022

Preprint

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In the NonHolomorphic Supersymmetric Standard Model (NHSSM), the Yukawa couplings of the bottom quark (y b ) and the tau lepton (y τ ) might receive substantial supersymmetric (SUSY) radiative corrections which have prominent dependencies on the NHSSM-specific trilinear soft parameters, A b and A τ , respectively, in addition to their well-known dependence on tan β as is already present in the Minimal SUSY Standard Model (MSSM). We study to what extent these could affect the production cross sections of the heavy Higgs bosons (H and A) in association with a pair of b-quarks and their decay branching ratios, in particular, to a τ τ pair and compare them with those obtained in the MSSM. Requiring compliance with the recently observed upper bounds on the product of their total cross section and the branching ratio to τ τ at the 13 TeV run of the Large Hadron Collider (LHC), with data worth 139 fb −1 , results in an altered exclusion region in the customary m A −tan β plane in the framework of the NHSSM when compared to what is derived by the LHC experiments within an MSSM setup. Such alterations are estimated to be pronounced only for large tan β (≥ 40) and for large, negative A b when one finds a reinforced exclusion of the m A − tan β plane with an excluded m A value larger by ≈ 350 GeV, compared to the MSSM case, at tan β = 60. On the other hand, the maximum relaxation in m A , for a similarly large but positive A b , barely exceeds ≈ 100 GeV as a result of complementary variations in production cross sections and decay branching fractions of the heavy, neutral Higgs bosons.

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Radiatively generated source of flavor universal scalar soft masses

Cited by 9 publications

References 76 publications

A relatively light, highly bino-like dark matter in the Z3-symmetric NMSSM and recent LHC searches

A relatively light, highly bino-like dark matter in the Z3-symmetric NMSSM and recent LHC searches

t − b − τ Yukawa unification in non-holomorphic MSSM

Associated production of heavy Higgs bosons with a $b\bar{b}$ pair in the Nonholomorphic MSSM and LHC searches

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