The Light Sgoldstino Phenomenology: Explanations for the Muon $(g-2)$ Deviation and KOTO Anomaly

Liu, Xuewen; Li, Ying; Li, Tianjun; Zhu, Bin

doi:10.48550/arxiv.2006.08869

Cited by 6 publications

(6 citation statements)

References 49 publications

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“…Even though higher-order operators are suppressed when the new physics scale is above the electroweak scale, this is a place where the Standard Model contribution is so suppressed that they can play an important role. In addition, there are models with light new particles (e.g., [45][46][47][48][49][50]). In this case, our classification can be straightforwardly expanded to include new light degrees of freedom in the Hilbert series.…”

Section: Discussionmentioning

confidence: 99%

2, 12, 117, 1959, 45171, 1170086, …: a Hilbert series for the QCD chiral Lagrangian

Gráf

Henning

et al. 2021

J. High Energ. Phys.

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We apply Hilbert series techniques to the enumeration of operators in the mesonic QCD chiral Lagrangian. Existing Hilbert series technologies for non-linear realizations are extended to incorporate the external fields. The action of charge conjugation is addressed by folding the $$ \mathfrak{su}(n) $$ su n Dynkin diagrams, which we detail in an appendix that can be read separately as it has potential broader applications. New results include the enumeration of anomalous operators appearing in the chiral Lagrangian at order p8, as well as enumeration of CP-even, CP-odd, C-odd, and P-odd terms beginning from order p6. The method is extendable to very high orders, and we present results up to order p16.(The title sequence is the number of independent C-even and P-even operators in the mesonic QCD chiral Lagrangian with three light flavors of quarks, at chiral dimensions p2, p4, p6, …)

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Section: Discussionmentioning

confidence: 99%

2, 12, 117, 1959, 45171, 1170086, …: a Hilbert series for the QCD chiral Lagrangian

Gráf

Henning

et al. 2021

J. High Energ. Phys.

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“…The three-track signature is particularly interesting and is in general always present whenever the five-track process is possible. It also provides a direct test of dark-neutrino explanations to the Mini-BooNE excess [180,181,183,222,223,[261][262][263], where HNLs are produced in muon neutrino interactions inside the detector due to the exchange of a new force. A slice of the dark sector parameter space is shown in Fig.…”

Section: Dark Fermionsmentioning

confidence: 99%

New Physics Searches at Kaon and Hyperon Factories

Goudzovski¹,

Redigolo²,

Tobioka³

et al. 2022

Preprint

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Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths and the availability of very large datasets. On the other hand, useful complementary information is provided by hyperon decay measurements. We summarize the relevant phenomenological models and the status of the searches in a comprehensive list of kaon and hyperon decay channels. We identify new search strategies for under-explored signatures, and demonstrate that the improved sensitivities from current and nextgeneration experiments could lead to a qualitative leap in the exploration of light dark sectors.

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“…( 4), depending on how possible impact of new physics is taken into account [2]. A number of BSM scenarios have been proposed to explain this discrepancy [2,[14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Among them, a prominent role is played by models predicting the existence of a new LLP with the mass m X ∼ 100 MeV, which can be produced in rare kaon decays, K L → π 0 X [2].…”

Section: Koto Experiments and The Anomalymentioning

confidence: 99%

Looking forward to test the KOTO anomaly with FASER

Kling,

Trojanowski

2020

Preprint

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The search for light and long-lived particles at the LHC will be intensified in the upcoming years with a prominent role of the new FASER experiment. In this study, we discuss how FASER could independently probe such scenarios relevant for new physics searches at kaon factories. We put an emphasis on the proposed explanations for the recently observed three anomalous events in the KOTO experiment. The baseline of FASER precisely corresponds to the proposed lifetime solution to the anomaly that avoids the NA62 bounds on charged kaons. As a result, the experiment can start constraining relevant models within the first few weeks of its operation. In some cases, it can confirm a possible discovery with up to 10 4 spectacular high-energy events in FASER during LHC Run 3. Further complementarities between FASER and kaon factories, which employ FASER capability to study γγ signature, are illustrated for the model with axion-like particles dominantly coupled to SU (2)W gauge bosons.

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The Light Sgoldstino Phenomenology: Explanations for the Muon $(g-2)$ Deviation and KOTO Anomaly

Cited by 6 publications

References 49 publications

2, 12, 117, 1959, 45171, 1170086, …: a Hilbert series for the QCD chiral Lagrangian

2, 12, 117, 1959, 45171, 1170086, …: a Hilbert series for the QCD chiral Lagrangian

New Physics Searches at Kaon and Hyperon Factories

Looking forward to test the KOTO anomaly with FASER

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