Large<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn><mml:mn /><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mi>μ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>in SU(5) × U(1) supergravity models

López, Jorge L.; Nanopoulos, Dimitri V.; Wang, Xu

doi:10.1103/physrevd.49.366

Cited by 246 publications

(252 citation statements)

References 33 publications

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“…This effect can be seen most easily in the mass insertion approximation, where the main contribution arises from the chargino diagram in which the required chirality flip takes place via gaugino-higgsino mixing rather than by an explicit mass insertion on the external muon [285,286,287,288]. Assuming the superpartners are all approximately degenerate with masses given by m, in this case the leading chargino contribution is of the order…”

Section: Dipole Moment Constraintsmentioning

confidence: 96%

“…For large tan β, the chargino diagram dominates over the neutralino diagram over most of the parameter space [285,286,287,288], and is linear in tan β. This effect can be seen most easily in the mass insertion approximation, where the main contribution arises from the chargino diagram in which the required chirality flip takes place via gaugino-higgsino mixing rather than by an explicit mass insertion on the external muon [285,286,287,288].…”

Section: Dipole Moment Constraintsmentioning

confidence: 99%

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The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general minimal supersymmetric standard model (MSSM). Extensions to include neutrino masses and nonminimal theories are also discussed. Topics covered include models of supersymmetry breaking, phenomenological constraints from electroweak symmetry breaking, flavor/CP violation, collider searches, and cosmological constraints including dark matter and implications for baryogenesis and inflation.

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Section: Dipole Moment Constraintsmentioning

confidence: 96%

Section: Dipole Moment Constraintsmentioning

confidence: 99%

The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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show abstract

“…yields sizable contributions to the muon g − 2 [13][14][15]. The SUSY contributions to the muon g − 2 are naturally enhanced by tan β ≡ H u / H d .…”

Section: Jhep01(2014)123mentioning

confidence: 99%

Muon g − 2 vs LHC in supersymmetric models

Endo

Hamaguchi

Iwamoto

et al. 2014

J. High Energ. Phys.

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There is more than 3σ deviation between the experimental and theoretical results of the muon g − 2. When interpreted in SUSY extensions of the SM, this anomaly suggests that some of the SUSY particles have a mass of order 100 GeV. We study searches for those particles at the LHC with particular attention to the muon g − 2. In particular, the recent results on the searches for the non-colored SUSY particles are investigated in the parameter region where the muon g − 2 is explained. The analysis is independent of details of the SUSY models. Future prospects of the collider searches are also discussed.

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“…One can show that the former will become dominant, which is proportional to (m µ /m SU SY ) 2 tanβ if tanβ is large [26] where m SU SY denotes the the mass of the sneutrino or chargino. For tanβ >> 1, ∆a µ can set a lower bound on the mass of the sneutrino while the chargino is light.…”

Section: Introductionmentioning

confidence: 99%

The muon anomalous magnetic moment from a generic charged Higgs with SUSY

Chen

Geng

2001

Physics Letters B

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We study the contribution of a generic charged Higgs (H + ) to the muon anomalous magnetic moment a µ with the SUSY soft breaking parameters. We find out that the deviation between the experimental data and the predicted SM value on a µ can be explained by the two-loop charged Higgs diagrams even with m H + ∼ 400 GeV .It is believed that the muon anomalous magnetic moment, a µ ≡ (g µ −2)/2, would provide precision tests of the standard model (SM) and probe for new physics [1]. Recently, it has been measured at BNL [2] with the data a exp µ = 116 592 023(151) × 10 −11 .(1)The experimental value in Eq. (1) differs from that in the SM [2] despite of the several different theoretical predictions from hadronic contributions [3,4]. In Ref.[2], it was reported that ∆a µ ≡ a exp µ − a SM µ = 426 ± 165 × 10 −11 ,while a recent calculation [4] based on a different estimation from the hadronic part gave ∆a µ = 375 ± 170 × 10 −11 .The values in Eqs. (2) and (3) indicate a window for new physics at 2.6σ and 2.2σ levels, which are translated into 215 × 10 −11 ≤ ∆a µ ≤ 637 × 10 −11 (90% CL) ,andrespectively. It is clear that both ranges in Eqs. (4) and (5) suggest the existence of new physics beyond the SM. However, one must caution about this less than 3σ result until the experiment of E821 at BNL is completed, which should increase the statistical significance at more than 6σ level [5], and the theoretical uncertainties from the hadronic part in a SM µ are further reduced. Recently, various models, such as those with SUSY, scalar bosons, and extra dimensions, which could lead to ∆a µ = O(400 × 10 −11 ) have been explored [1,6,7,8]. In particular, it is discussed extensively to use scalar Higgs bosons in SUSY-like theories as the viable candidates. In Refs. [7,8], the possibilities of using light neutral Higgs bosons with a large tanβ to account ∆a µ at the one-and two-loop levels were studied. It is known that a large tanβ is interesting theoretically since the unification of bottom and tau Yukawa couplings and the explanation of the top to the bottom mass ratio are realized in GUTs if tanβ ∼ O(50) [9]. With this possible large tanβ, it is found that the mass for the scalar boson has to be less than 5 GeV [7] and that for the pseudoscalar 75 GeV with including the Barr-Zee type [10] of the two-loop diagrams [8]. One may conclude that ∆a µ cannot arise from either a scalar or pseudoscalar in the minimal supersymmetric model (MSSM) due to the experimental limits on the scalar and pseudoscalar masses, which are in the ranges of 85 − 95 GeV [11,12,13].In this paper, we would like to examine whether it is possible to use a charged Higgs boson in SUSY models to induce ∆a µ beyond the one loop level. It is known that the challenge with a charged Higgs in theories is how to escape the constraint from the experimental value of B(B → X s γ) = 2.85 ± 0.41 × 10 −4 [14] which is consistent with that of 3.29 ± 0.33 × 10 −4 predicted in the SM. Following the analysis of [15,16] with the next-to-leading order (NLO) QCD corrections, ...

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Large(g−2)μin SU(5) × U(1) supergravity models

Cited by 246 publications

References 33 publications

The soft supersymmetry-breaking Lagrangian: theory and applications

The soft supersymmetry-breaking Lagrangian: theory and applications

Muon g − 2 vs LHC in supersymmetric models

The muon anomalous magnetic moment from a generic charged Higgs with SUSY

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