Further search for the decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>→</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>ν</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow><

Adler, S. S.; Aoki, M.; Ardebili, M.; Atiya, M. S.; Bazarko, A. O.; Bergbusch, P. C.; Bhuyan, B.; Blackmore, E. W.; Bryman, D. A.; Chiang, I. H.; Convery, M. R.; Diwan, M. V.; Frank, James S.; Haggerty, J. S.; Inagaki, T.; Ito, M.; Jain, V.; Jaffe, D. E.; Kabe, S.; Kazumori, M.; Kettell, S. H.; Kitching, P.; Kobayashi, M.; Komatsubara, T. K.; Konaka, A.; Kuno, Y.; Kuriki, M.; Kycia, T. F.; Li, K. K.; Littenberg, L.; Macdonald, J. A.; McPherson, R. A.; Meyers, P. D.; Mildenberger, J.; Muramatsu, N.; Nakano, Takashi; Ng, C.; Ng, Sam Yanwing; Numao, T.; Otomo, Akira; Poutissou, J. M.; Poutissou, R.; Redlinger, G.; Sasaki, T.; Sato, Takahiro; Shinkawa, T.; Shoemaker, F. C.; Smith, A. J. S.; Soluk, R.; Stone, J. R.; Strand, R. C.; Sugimoto, S.; Witzig, C.; Yoshimura, Y.

doi:10.1103/physrevd.70.037102

Cited by 74 publications

(40 citation statements)

References 13 publications

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“…When both c aΦ and c W are simultaneously considered, an interesting pattern of destructive interference can take place, [58] (green) and B(B → K + inv) [59] (blue) by fixing fa = 1 TeV and by setting the other couplings to zero. Projections for NA62 [47] and Belle-II [67] experiments are illustrated by dashed lines.…”

Section: The Invisible Alpmentioning

confidence: 99%

Flavor constraints on electroweak ALP couplings

et al. 2019

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We explore the signals of axion-like particles (ALPs) in flavor-changing neutral current (FCNC) processes. The most general effective linear Lagrangian for ALP couplings to the electroweak bosonic sector is considered, and its contribution to FCNC decays is computed up to one-loop order. The interplay between the different couplings opens new territory for experimental exploration, as analyzed here in the ALP mass range 0 < ma < ∼ 5 GeV. When kinematically allowed, K → πνν decays provide the most stringent constraints for channels with invisible final states, while B-meson decays are more constraining for visible decay channels, such as displaced vertices in B → K ( * ) µ + µ − data. The complementarity with collider constraints is discussed as well.

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Section: The Invisible Alpmentioning

confidence: 99%

Flavor constraints on electroweak ALP couplings

et al. 2019

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“…[61], based on Refs. [58,79,80]). These decays probe the quantity tr(M D log(M R /m W )M † D ), but to simplify comparison with the other limits we set log(M R /m W ) = 1 1 to obtain a limit on tr(K).…”

Section: A Light Majoronsmentioning

confidence: 99%

Majoron at two loops

Heeck

Patel

2019

Phys. Rev. D

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We present singlet-Majoron couplings to Standard Model particles through two loops at leading order in the seesaw expansion, including couplings to gauge bosons as well as flavor-changing quark interactions. We discuss and compare the relevant phenomenological constraints on Majoron production as well as decaying Majoron dark matter. A comparison with standard seesaw observables in low-scale settings highlights the importance of searches for lepton-flavor-violating two-body decays → +Majoron in both the muon and tau sectors.

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“…A different approach for the study of the ultra-rare K → π νν decay and the search for lepton-flavor violating transitions was taken by the E787 [194][195][196] and E949 [197] experiments at the Alternating Gradient Synchrotron (AGS) of the Brookhaven National Laboratory. Charged Kaons were produced by 24 GeV protons interacting on a fixed target.…”

Section: Kaon Experimentsmentioning

confidence: 99%

Flavor physics in the quark sector

et al. 2010

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In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor. In this time frame, measurements and the theoretical interpretation of their results have advanced tremendously. A much broader understanding of flavor particles has been achieved; apart from their masses and quantum numbers, there now exist detailed measurements of the characteristics of their interactions allowing stringent tests of Standard Model predictions. Among the most interesting phenomena of flavor physics is the violation of the CP symmetry that has been subtle and difficult to explore. In the past, observations of CP violation were confined to neutral K mesons, but since the early 1990s, a large number of CP-violating processes have been studied in detail in neutral B mesons. In parallel, measurements of the couplings of the heavy quarks and the dynamics for their decays in large samples of K, D, and B mesons have been greatly improved in accuracy and the results are being used as probes in the search for deviations from the Standard Model. In the near future, there will be a transition from the current to a new generation of experiments; thus a review of the status of quark flavor physics is timely. This report is the result of the work of physicists attending the 5th CKM workshop, hosted by the University of Rome "La Sapienza", September 9-13, 2008. It summarizes the results of the current generation of experiments that are about to be completed and it confronts these results with the theoretical understanding of the field which has greatly improved in the past decade. (C) 2010 Elsevier B.V. All rights reserved

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Further search for the decayK+→π+νν¯<

Cited by 74 publications

References 13 publications

Flavor constraints on electroweak ALP couplings

Flavor constraints on electroweak ALP couplings

Majoron at two loops

Flavor physics in the quark sector

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