New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO

Kitahara, Teppei; Okui, Takemichi; Perez, Gilad; Soreq, Yotam; Tobioka, Kohsaku

doi:10.1103/PhysRevLett.124.071801

Title: New Physics Implications of Recent Search for $K_{L} \to π^{0} ν \bar{ν}$ at KOTO

Abstract

The KOTO experiment recently reported four candidate events in the signal region of KL → π0νν¯ search, where the standard model only expects 0.10 ± 0.02 events. If confirmed, this requires physics beyond the standard model to enhance the signal. We examine various new physics interpretations of the result including these: (1) heavy new physics boosting the standard model signal, (2) reinterpretation of “νν¯” as a new light long-lived particle, or (3) reinterpretation of the whole signal as the production of a new light long-lived particle at the fixed target. We study the above explanations in the context of a generalized new physics Grossman-Nir bound coming from the Kþ → πþνν¯ decay, bounded by data from the E949 and the NA62 experiments.

Authors:

;

; Perez, Gilad;

;

Publication Date:: Wed Feb 19 00:00:00 EST 2020

Research Org.:: Florida State Univ., Tallahassee, FL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); Israel Science Foundation; United-States-Israel Binational Science Foundation (BSF); Israel Planning and Budgeting Committee; Japan Society for the Promotion of Science (JSPS)

OSTI Identifier:: 1601051

Alternate Identifier(s):: OSTI ID: 1601240; OSTI ID: 1674939

Grant/Contract Number:: SC0010102; 720/15; 2014397; 1937/12; 19K14706

Resource Type:: Published Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Name: Physical Review Letters Journal Volume: 124 Journal Issue: 7; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; rare decays; axions; hypothetical scalars; kaons; neutrinos; CP violation

Citation Formats


                    Kitahara, Teppei, Okui, Takemichi, Perez, Gilad, Soreq, Yotam, and Tobioka, Kohsaku. New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevLett.124.071801.

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                    Kitahara, Teppei, Okui, Takemichi, Perez, Gilad, Soreq, Yotam, & Tobioka, Kohsaku. New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO.  United States.  https://doi.org/10.1103/PhysRevLett.124.071801

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                    Kitahara, Teppei, Okui, Takemichi, Perez, Gilad, Soreq, Yotam, and Tobioka, Kohsaku. Wed .  
"New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO".  United States.  https://doi.org/10.1103/PhysRevLett.124.071801.

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@article{osti_1601051,

  title        = {New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO},

  author       = {Kitahara, Teppei and Okui, Takemichi and Perez, Gilad and Soreq, Yotam and Tobioka, Kohsaku},

  abstractNote = {The KOTO experiment recently reported four candidate events in the signal region of KL → π0νν¯ search, where the standard model only expects 0.10 ± 0.02 events. If confirmed, this requires physics beyond the standard model to enhance the signal. We examine various new physics interpretations of the result including these: (1) heavy new physics boosting the standard model signal, (2) reinterpretation of “νν¯” as a new light long-lived particle, or (3) reinterpretation of the whole signal as the production of a new light long-lived particle at the fixed target. We study the above explanations in the context of a generalized new physics Grossman-Nir bound coming from the Kþ → πþνν¯ decay, bounded by data from the E949 and the NA62 experiments.},

  doi          = {10.1103/PhysRevLett.124.071801},

  journal      = {Physical Review Letters},

  number       = 7,

  volume       = 124,

  place        = {United States},

  year         = {Wed Feb 19 00:00:00 EST 2020},

  month        = {Wed Feb 19 00:00:00 EST 2020}

}

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Works referenced in this record:

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Title: New Physics Implications of Recent Search for K L → π 0 ν ν ¯ at KOTO

Abstract

Citation Formats

Two-loop electroweak corrections for the K → π ν ν ¯ decays journal, February 2011

Collider probes of axion-like particles journal, December 2017

CP -violating decay K L 0 → π 0 νν¯ journal, June 1989

Loophole in K → π ν ν ¯ Search and New Weak Leptonic Forces journal, April 2015

Search for axion-like particle production in 400 GeV proton-copper interactions journal, July 1985

Physics beyond colliders at CERN: beyond the Standard Model working group report journal, December 2019

New Measurement of the K + → π + ν ν ¯ Branching Ratio journal, November 2008

Improved estimates of rare K decay matrix elements from K ℓ 3 decays journal, August 2007

Search for the Decay K L → π 0 μ + μ − journal, June 2000

Search for the Rare Decay K L → π 0 e + e − journal, July 2004

Coupling QCD-Scale Axionlike Particles to Gluons journal, July 2019

Erratum: charm quark contribution to $ {K^{+}}\to {\pi^{+}}\nu \overline{\nu} $ at next-to-next-to-leading order journal, November 2012

Manifesting the invisible axion at low energies journal, March 1986

Final results from the KTeV experiment on the decay K L → π 0 γ γ journal, June 2008

Photoproduction of Axionlike Particles journal, August 2019

K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ and K L → π 0 ν ν ¯ $$ {K}_L\to {\pi}^0\nu \overline{\nu} $$ in the Standard Model: status and perspectives journal, November 2015

Search for K L → π 0 ν ν ¯ and K L → π 0 X 0 Decays at the J-PARC KOTO Experiment journal, January 2019

beyond the standard model journal, April 1997

Review of Particle Physics journal, August 2018

Weak Interactions with Lepton-Hadron Symmetry journal, October 1970

Charm quark contribution to K + →π + νbar nu at next-to-next-to-leading order journal, November 2006

Limits on neutral light scalar and pseudoscalar particles in a proton beam dump experiment journal, September 1991

Study of the decay K + → π + ν ν ¯ in the momentum region 140 < P π < 199 MeV / c journal, May 2009

First search for K + → π + ν ν ¯ using the decay-in-flight technique journal, April 2019

New probes for axionlike particles at hadron colliders journal, July 2019

Title: New Physics Implications of Recent Search for $K_{L} \to π^{0} ν \bar{ν}$ at KOTO

Two-loop electroweak corrections for the $K \to π ν \bar{ν}$ decays
journal, February 2011

Collider probes of axion-like particles
journal, December 2017

CP -violating decay $K_{L}^{0}$ → $π^{0}$ νν¯
journal, June 1989

Loophole in $K \to π ν \bar{ν}$ Search and New Weak Leptonic Forces
journal, April 2015

Search for axion-like particle production in 400 GeV proton-copper interactions
journal, July 1985

Physics beyond colliders at CERN: beyond the Standard Model working group report
journal, December 2019

New Measurement of the $K^{+} \to π^{+} ν \bar{ν}$ Branching Ratio
journal, November 2008

Improved estimates of rare $K$ decay matrix elements from $K_{ℓ 3}$ decays
journal, August 2007

Search for the Decay $K_{L} \to π^{0} μ^{+} μ^{-}$
journal, June 2000

Search for the Rare Decay $K_{L} \to π^{0} e^{+} e^{-}$
journal, July 2004

Coupling QCD-Scale Axionlike Particles to Gluons
journal, July 2019

Erratum: charm quark contribution to $ {K^{+}}\to {\pi^{+}}\nu \overline{\nu} $ at next-to-next-to-leading order
journal, November 2012

Manifesting the invisible axion at low energies
journal, March 1986

Final results from the KTeV experiment on the decay $K_{L} \to π^{0} γ γ$
journal, June 2008

Photoproduction of Axionlike Particles
journal, August 2019

K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ and K L → π 0 ν ν ¯ $$ {K}_L\to {\pi}^0\nu \overline{\nu} $$ in the Standard Model: status and perspectives
journal, November 2015

Search for $K_{L} \to π^{0} ν \bar{ν}$ and $K_{L} \to π^{0} X^{0}$ Decays at the J-PARC KOTO Experiment
journal, January 2019

beyond the standard model
journal, April 1997

Review of Particle Physics
journal, August 2018

Weak Interactions with Lepton-Hadron Symmetry
journal, October 1970

Charm quark contribution to K ⁺ →π ⁺ νbar nu at next-to-next-to-leading order
journal, November 2006

Limits on neutral light scalar and pseudoscalar particles in a proton beam dump experiment
journal, September 1991

Study of the decay $K^{+} \to π^{+} ν \bar{ν}$ in the momentum region $140 < P_{π} < 199 MeV / c$
journal, May 2009

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