QCD corrections to →Xν, →ll, K→πν and K→μ+μ− in the MSSM

Bobeth, Christoph; Buras, Andrzej J.; Krüger, Frank; Urban, Jörg

doi:10.1016/s0550-3213(02)00141-4

Cited by 134 publications

(88 citation statements)

References 108 publications

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“…In the case of the MSSM, the SUSY contributions to this observable [79] are likely to exceed the recent LHCb measurement BR(B 0 s → µ + µ − )= 3.2 +1.5 −1.2 × 10 −9 [56], especially for light pseudoscalars in the large tan β regime. In the case of the NMSSM [80,81], the corresponding Wilson coefficient receives contributions from both pseudoscalar Higgs bosons through their doublet components.…”

Section: Experimental Constraints and The Choice Of Parametersmentioning

confidence: 88%

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

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In this article we propose a simultaneous collider search strategy for a pair of scalar bosons in the NMSSM through the decays of a very light pseudoscalar. The massive scalar has a mass around 126 GeV while the lighter one can have a mass in the vicinity of 98 GeV (thus explaining an apparent LEP excess) or be much lighter. The successive decay of this scalar pair into two light pseudoscalars, followed by leptonic pseudoscalar decays, produces clean multi-lepton final states with small or no missing energy. Furthermore, this analysis offers an alternate leptonic probe for the 126 GeV scalar that can be comparable with the ZZ * search channel. We emphasize that a dedicated experimental search for multi-lepton final states can be an useful probe for this scenario and, in general, for the NMSSM Higgs sector. We illustrate our analysis with two representative benchmark points and show how the LHC configuration with 8 TeV center-of-mass energy and 25 fb −1 of integrated luminosity can start testing this scenario, providing a good determination of the light pseudoscalar mass and a relatively good estimation of the lightest scalar mass. *

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Section: Experimental Constraints and The Choice Of Parametersmentioning

confidence: 88%

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Cerdeño

Ghosh

Park

2013

J. High Energ. Phys.

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“…Herec S andc P are the dimensionless Wilson coefficientsc S = M Bs c S andc P = M Bs c P with c S and c P being properly normalized (see [21]) Wilson coefficients of the operators Using the vertices in (3.5) one finds from the diagrams of fig. 3 [12,13] …”

Section: ∆M S and Bmentioning

confidence: 99%

Correlation between ΔMs and B0s,d→μ+μ− in supersymmetry at large tanβ

et al. 2002

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Considering the MSSM with the CKM matrix as the only source of flavour violation and heavy supersymmetric particles at large tan β, we analyze the correlation between the increase of the rates of the decays B 0 s,d → µ + µ − and the suppression of ∆M s , that are caused by the enhanced flavour changing neutral Higgs couplings to down-type quarks. We give analytic formulae for the neutral and charged Higgs couplings to quarks including large tan β resummed corrections in the SU (2) × U (1) limit and comment briefly on the accuracy of this approximation. For 0.8 However, we point out that in the less likely scenario in which the squark mixing is so large that the neutral Higgs contributions dominate ∆M s , the rates for B 0 s,d → µ + µ − increase with increasing ∆M s and the bounds in question are weaker. Violation of all these correlations and bounds would indicate new sources of flavour violation.

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“…The remaining input parameters are fixed as given in Tables 1 and 2 of Ref. [27]. We have analyzed more than 100,000 parameter sets, which have been produced randomly.…”

Section: Numerical Analysis a Experimental Constraintsmentioning

confidence: 99%

Enhancement ofB(Bd→μ+μ−
Bobeth
¹
,
Ewerth
²
,
Krüger
³

et al. 2002
Phys. Rev. D
107
5
80
0
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We extend our previous analysis of the decaysB d,s → µ + µ − in the Minimal Supersymmetric Standard Model (MSSM) to include gluino and neutralino contributions. We provide analytic formulae, valid at large values of tan β, for the scalar and pseudoscalar Wilson coefficients arising from neutral Higgs boson exchange diagrams with gluinos and neutralinos. Together with the remaining contributions (W ± , H ± ,χ ± ), and assuming the Cabibbo-KobayashiMaskawa (CKM) matrix to be the only source of flavour violation, we assess their implications for the branching fractions, since (i) the theoretical errors cancel to a large extent, and (ii) it offers a theoretically clean way of extracting the ratio |V td /V ts | in the Standard Model, which predicts R SM ∼ |V td /V ts | 2 ∼ O(10 −2 ). Exploring three different scenarios of modified minimal flavour violation (MFV), we find that part of the MSSM parameter space can accommodate largeB d,s → µ + µ − branching fractions, while being consistent with various experimental constraints. More importantly, we show that the ratio R can be as large as O(1), while the individual branching fractions may be amenable to detection by ongoing experiments. We conclude that within the MSSM with large tan β the decay rates ofB d → µ + µ − and B s → µ + µ − can be of comparable size even in the case where flavour violation is due solely to the CKM matrix.

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QCD corrections to →Xν, →ll, K→πν and K→μ+μ− in the MSSM

Cited by 134 publications

References 108 publications

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Correlation between ΔMs and B0s,d→μ+μ− in supersymmetry at large tanβ

Enhancement ofB(Bd→μ+μ−
Bobeth
¹
,
Ewerth
²
,
Krüger
³

et al. 2002
Phys. Rev. D
107
5
80
0
View full text Add to dashboard Cite

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QCD corrections to →Xν, →ll, K→πν and K→μ+μ− in the MSSM

Cited by 134 publications

References 108 publications

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar

Correlation between ΔMs and B0s,d→μ+μ− in supersymmetry at large tanβ

Enhancement ofB(Bd→μ+μ−Bobeth1, Ewerth2, Krüger3 et al. 2002Phys. Rev. D1075800View full textAdd to dashboardCite

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About

Enhancement ofB(Bd→μ+μ−
Bobeth
¹
,
Ewerth
²
,
Krüger
³

et al. 2002
Phys. Rev. D
107
5
80
0
View full text Add to dashboard Cite