Experimental study of the decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>K</mml:mi><mml:mi>L</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo>→</mml:mo><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mi>ν</mml:mi><mml:mover accent="true"><mml:mi>ν</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>

Ahn, J. K.; Akune, Y.; Баранов, В. А.; Chen, Kai-Feng; Comfort, J. R.; Doroshenko, M.; Fujioka, Y.; Hsiung, Y.; Inagaki, T.; Ishibashi, S.; Ishihara, N.; Ishii, H.; Iwai, E.; Iwata, T.; Kato, I.; Kobayashi, S.; Komatsu, S; Komatsubara, T. K.; Kurilin, A. S.; Kuzmin, E. S.; Lednev, A.A.; Lee, H. S.; Lee, S. Y.; Lim, G. Y.; Ma, J.; Matsumura, T.; Moisseenko, A.; Morii, H.; Morimoto, Takahiro; Nakajima, Yasuhiro; Nakano, Takashi; Nanjo, H.; Nishi, N.; Nix, J.R.; Nomura, T.; Nomachi, M.; Ogata, R.; Okuno, H.; Omata, K.; Perdue, G. N.; Perov, S. V.; Podolsky, S.; Porokhovoy, S.; Sakashita, K.; Sasaki, T.; Sasao, N.; Sato, Hitoshi; Satô, Tôru; Sekimoto, M.; Shimogawa, Tetsushi; Shinkawa, T.; Stepanenko, Yu. Yu.; Sugaya, Y.; Sugiyama, A.; Sumida, T.; Suzuki, S.; Tajima, Y.; Takita, S.; Tsamalaidze, Z.; Tsukamoto, T.; Tung, Y. C.; Wah, Y. W.; Watanabe, H.; Wu, M.; Yamaga, M.; Yamanaka, T.; Yoshida, Hiroshi; Yoshimura, Y.; Zheng, Y.

doi:10.1103/physrevd.81.072004

Cited by 105 publications

(49 citation statements)

References 27 publications

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“…As this process is highly suppressed in the SM, it is sensitive to new physics. The preset upper bound on B(K L → π 0 νν) is 2.6 × 10 −8 [74] at 90% C.L. which is about three orders of magnitude above the SM prediction.…”

Section: Real Couplingmentioning

confidence: 78%

Flavor signatures of complex anomalous tcZ couplings

Kumbhakar

Saini

2020

Eur. Phys. J. Plus

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Electronic address: suman@phy.iitb.ac.in † Electronic address: saini.1@iitj.ac.in 1 Apart from introducing new anomalies in b → s µ + µ − sector, the LHC reinforced the prevailing anomalies in the decays incuded by b → cτ ν transition. A series of experiments performed by BaBar [17, 18], Belle [19-22] indicated an excess in the values of the ratios R D ( * ) = Γ(B → D ( * ) τν)/Γ(B → D ( * ) e/µν) over their SM predictions. This was corroborated by the LHCb measurements [23, 24]. Refs. [25-30] identified new physics operators which can account for R D ( * ) measurements.

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Section: Real Couplingmentioning

confidence: 78%

Flavor signatures of complex anomalous tcZ couplings

Kumbhakar

Saini

2020

Eur. Phys. J. Plus

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“…These numbers are to be compared with the current experimental results for the charged [12][13][14][15] (measured by BNL 787 and BNL 949) and neutral [16] modes (from KEK E391a), …”

Section: Introductionmentioning

confidence: 99%

Constraints on new physics from $$K \rightarrow \pi \nu {\bar{\nu }}$$

He¹,

Valencia²,

Wong³

2018

Eur. Phys. J. C

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We study generic effects of new physics on the rare decay modes K L → π 0 νν and K + → π + νν. We discuss several cases: left-handed neutrino couplings; right handed neutrino couplings; neutrino lepton flavour violating (LFV) interactions; and I = 3/2 interactions. The first of these cases has been studied before as it covers many new physics extensions of the standard model; the second one requires the existence of a new light (sterile) right-handed neutrino and its contribution to both branching ratios is always additive to the SM. The case of neutrino LFV couplings introduces a CP conserving contribution to K L → π 0 νν which affects the rates in a similar manner as a right handed neutrino as neither one of these interferes with the standard model amplitudes. Finally, we consider new physics with I = 3/2 interactions to go beyond the Grossman-Nir bound. We find that the rare kaon rates are only sensitive to new physics scales up to a few GeV for this scenario.

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“…[79]), with a larger uncertainty in the charged mode due to the light quark contributions. On the other hand, the experimental values are [80][81][82][83][84] Br(…”

Section: Leptoquarks In Rare K Decaysmentioning

confidence: 99%

Footprints of leptoquarks: from $$ R_{K^{(*)}} $$ R K ( ∗ ) to

Fajfer¹,

Košnik²,

Silva³

2018

Eur. Phys. J. C

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Rare K → πνν decays, being dominated by short distance contributions within the standard model (SM), open a window for new physics (NP) searches at low energies. The K → πνν branching ratios are expected to be measured with ∼ 10% accuracies by NA62/CERN and KOTO/JPARC. The theoretical uncertainties of branching ratios within the SM are well under control. In the B sector, it is tentative to explain the B-meson anomalies R D ( * ) and/or R K ( * ) by effects of physics beyond the SM. Although NP seems to be present in the third fermion generation it might also manifest in the flavor changing neutral current transition s → d. Together with the anticipated good experimental sensitivities and accurate theoretical predictions for K → πνν, this motivates studies of correlated effects of NP in rare K → πνν and B → K ( * ) μ + μ − decays. Here we consider the loop induced effects in K → πνν in two leptoquark models designed to address lepton-flavor universality violation in the R K ( * ) anomalies.

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Experimental study of the decayKL0→π0νν¯

Cited by 105 publications

References 27 publications

Flavor signatures of complex anomalous tcZ couplings

Flavor signatures of complex anomalous tcZ couplings

Constraints on new physics from $$K \rightarrow \pi \nu {\bar{\nu }}$$

Footprints of leptoquarks: from $$ R_{K^{(*)}} $$ R K ( ∗ ) to

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