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- W3113372783 abstract "A bstract Recently the RBC-UKQCD lattice QCD collaboration presented new results for the hadronic matrix elements relevant for the ratio ε′/ε in the Standard Model (SM) albeit with significant uncertainties. With the present knowledge of the Wilson coefficients and isospin breaking effects there is still a sizable room left for new physics (NP) contributions to ε′/ε which could both enhance or suppress this ratio to agree with the data. The new SM value for the K 0 − $$ {overline{K}}^0 $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mover> <mml:mi>K</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> mass difference ∆ M K from RBC-UKQCD is on the other hand by 2 σ above the data hinting for NP required to suppress ∆ M K . Simultaneously the most recent results for K + → $$ {pi}^{+}nu overline{nu} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mi>ν</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> from NA62 and for K L → $$ {pi}^0nu overline{nu} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mi>π</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mi>ν</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> from KOTO still allow for significant NP contributions. We point out that the suppression of ∆ M K by NP requires the presence of new CP-violating phases with interesting implications for K → $$ pi nu overline{nu} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>πν</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> , K S → μ + μ − and K L → π 0 ℓ + ℓ − decays. Considering a Z ′-scenario within the SMEFT we analyze the dependence of all these observables on the size of NP still allowed by the data on ε′/ε . The hinted ∆ M K anomaly together with the ε K constraint implies in the presence of only left-handed (LH) or right-handed (RH) flavour-violating Z ′ couplings strict correlation between K + → $$ {pi}^{+}nu overline{nu} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mi>ν</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> and K L → $$ {pi}^0nu overline{nu} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mi>π</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mi>ν</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> branching ratios so that they are either simultaneously enhanced or suppressed relative to SM predictions. An anticorrelation can only be obtained in the presence of both LH and RH couplings. Interestingly, the NP QCD penguin scenario for ε′/ε is excluded by SMEFT renormalization group effects in ε K so that NP effects in ε′/ε are governed by electroweak penguins. We also investigate for the first time whether the presence of a heavy Z′ with flavour violating couplings could generate through top Yukawa renormalization group effects FCNCs mediated by the SM Z -boson. The outcome turns out to be very interesting." @default.
- W3113372783 created "2020-12-21" @default.
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- W3113372783 date "2020-12-01" @default.
- W3113372783 modified "2023-10-02" @default.
- W3113372783 title "Another SMEFT story: Z′ facing new results on ε′/ε, ∆MK and K → $$ pi nu overline{nu} $$" @default.
- W3113372783 cites W1463720093 @default.
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- W3113372783 cites W1977374361 @default.
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- W3113372783 cites W2022369938 @default.
- W3113372783 cites W2047030341 @default.
- W3113372783 cites W2052441337 @default.
- W3113372783 cites W2090414703 @default.
- W3113372783 cites W2114210704 @default.
- W3113372783 cites W2128114549 @default.
- W3113372783 cites W2137284081 @default.
- W3113372783 cites W2153352941 @default.
- W3113372783 cites W2187630890 @default.
- W3113372783 cites W2188479714 @default.
- W3113372783 cites W2205874269 @default.
- W3113372783 cites W2273050966 @default.
- W3113372783 cites W2291657290 @default.
- W3113372783 cites W2523551639 @default.
- W3113372783 cites W2557050216 @default.
- W3113372783 cites W2596312222 @default.
- W3113372783 cites W2601882436 @default.
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- W3113372783 cites W2615618533 @default.
- W3113372783 cites W2666133637 @default.
- W3113372783 cites W2739145808 @default.
- W3113372783 cites W2747178068 @default.
- W3113372783 cites W2769240711 @default.
- W3113372783 cites W2769739228 @default.
- W3113372783 cites W2775630683 @default.
- W3113372783 cites W2789840413 @default.
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- W3113372783 doi "https://doi.org/10.1007/jhep12(2020)097" @default.
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