Improved 
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 determination using precise lattice QCD form factors for 
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Chakraborty, Bipasha; Parrott, W. G.; Bouchard, C.; Davies, C. T. H.; Koponen, Jonna; Lepage, G. Peter

doi:10.1103/physrevd.104.034505

Cited by 18 publications

(9 citation statements)

References 62 publications

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“…The inputs of this CKM fit, shown in Table 4, are taken from the PDG 2020 [71] except |V cs |, for which we have adopted the more recent result of Ref. [72]. The value of |V ud | has been considerably shifted with respect to the one quoted in the PDG 2018 [73].…”

Section: Flavour Constraintsmentioning

confidence: 99%

See 1 more Smart Citation

Constraints on coloured scalars from global fits

Eberhardt,

Miralles,

Pich

2021

Preprint

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We consider a simple extension of the electroweak theory, incorporating one SU (2) L doublet of colour-octet scalars with Yukawa couplings satisfying the principle of minimal flavour violation. Using the HEPfit package, we perform a global fit to the available data, including all relevant theoretical constraints, and extract the current bounds on the model parameters. Coloured scalars with masses below 1.05 TeV are already excluded, provided they are not fermiophobic. The mass splittings among the different (charged and CP-even and CP-odd neutral) scalars are restricted to be smaller than 20 GeV. Moreover, for scalar masses smaller than 1.5 TeV, the Yukawa coupling of the coloured scalar multiplet to the top quark cannot exceed the one of the SM Higgs doublet by more than 80%. These conclusions are quite generic and apply in more general frameworks (without fine tunings). The theoretical requirements of perturbative unitarity and vacuum stability enforce relevant constraints on the quartic scalar potential parameters that are not yet experimentally tested.

show abstract

Section: Flavour Constraintsmentioning

confidence: 99%

“…Inputs[71,72] used for the CKM fit and processes from which they are obtained. The error of |V ud | has been increased by a factor 2.4.…”

mentioning

confidence: 99%

Constraints on coloured scalars from global fits

Eberhardt,

Miralles,

Pich

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The inputs of this CKM fit, shown in table 4, are taken from the PDG 2020 [75] except |V cs |, for which we have adopted the more recent result of ref. [76]. The value of |V ud | has been considerably shifted with respect to the one quoted in the PDG 2018 [77].…”

Section: Flavour Constraintsmentioning

confidence: 70%

“…Inputs[75,76] used for the CKM fit and processes from which they are obtained. The error of |V ud | has been increased by a factor 2.4.…”

mentioning

confidence: 99%

Constraints on coloured scalars from global fits

Eberhardt

Miralles

Pich

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We consider a simple extension of the electroweak theory, incorporating one SU(2)L doublet of colour-octet scalars with Yukawa couplings satisfying the principle of minimal flavour violation. Using the HEPfit package, we perform a global fit to the available data, including all relevant theoretical constraints, and extract the current bounds on the model parameters. Coloured scalars with masses below 1.05 TeV are already excluded, provided they are not fermiophobic. The mass splittings among the different (charged and CP-even and CP-odd neutral) scalars are restricted to be smaller than 20 GeV. Moreover, for scalar masses smaller than 1.5 TeV, the Yukawa coupling of the coloured scalar multiplet to the top quark cannot exceed the one of the SM Higgs doublet by more than 80%. These conclusions are quite generic and apply in more general frameworks (without fine tunings). The theoretical requirements of perturbative unitarity and vacuum stability enforce relevant constraints on the quartic scalar potential parameters that are not yet experimentally tested.

show abstract

“…[4] (that collects the original determinations from refs. [5][6][7][8][9][10][11][12][13]). The envelope JHEP02(2022)033 of constraints on g as a function of Z mass due to rare meson decays (RMD) is shown as a blue solid line in figures 1 and 2.…”

Section: Jhep02(2022)033mentioning

confidence: 99%