Search for leptonic decays of dark photons at NA62

NA62 Collaboration

doi:10.1103/PhysRevLett.133.111802

Search for leptonic decays of dark photons at NA62

NA62 Collaboration

Physics and Astronomy

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Abstract

The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×10¹⁷ protons on dump collected in 2021. No evidence for a dark photon signal is observed. The combined result for dark photon searches in lepton–antilepton final states is presented and a region of the parameter space is excluded at 90% confidence level, improving on previous experimental limits for dark photon mass values between 50 and 600 MeV/c² and coupling values in the range 10^-6 to 4×10^-5. An interpretation of the e⁺e^- search result in terms of the emission and decay of an axionlike particle is also presented.

Original language	English
Article number	111802
Number of pages	10
Journal	Physical Review Letters
Volume	133
Issue number	11
Early online date	11 Sept 2024
DOIs	https://doi.org/10.1103/PhysRevLett.133.111802
Publication status	Published - 13 Sept 2024

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10.1103/PhysRevLett.133.111802Licence: Creative Commons: Attribution (CC BY)

GilE2024SearchFinal published version, 1.7 MBLicence: Creative Commons: Attribution (CC BY)

KaonToALP - Search for axion-like particle production in kaon decays at CERN-NA62 experiment
Goudzovski, E. (Principal Investigator)
European Commission
4/05/21 → 11/07/23
Project: EU
H2020_IF_NEWLIGHTSCALAR
Goudzovski, E. (Principal Investigator)
European Commission
3/07/17 → 2/07/19
Project: EU
FP7_ERC_KaonLepton
Lazzeroni, C. (Co-Investigator) & Goudzovski, E. (Principal Investigator)
European Commission, European Commission - Management Costs
1/01/14 → 30/06/19
Project: Research
Ernest Rutherford Fellowship : Dr Antonio Sergi - Development of the NA62 Detector and Search for New Physics with Kaon Decays
Sergi, A. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
25/03/13 → 24/03/18
Project: Research Councils
FP7 ERC - UniversaLepto : Test of Lepton Flavour Universality with Kaon Decays
Lazzeroni, C. (Principal Investigator)
European Commission - Management Costs, European Commission
1/09/11 → 31/08/16
Project: Research

Cite this

@article{6ab04f0c24aa4c55ac2eedc20c83d71e,

title = "Search for leptonic decays of dark photons at NA62",

abstract = "The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. The combined result for dark photon searches in lepton–antilepton final states is presented and a region of the parameter space is excluded at 90\% confidence level, improving on previous experimental limits for dark photon mass values between 50 and 600 MeV/c2 and coupling values in the range 10-6 to 4×10-5. An interpretation of the e+e- search result in terms of the emission and decay of an axionlike particle is also presented.",

author = "\{NA62 Collaboration\} and Evgueni Goudzovski and Chandler Kenworthy and Cristina Lazzeroni and Angela Romano and Jack Sanders and Antonino Sergi and Adam Tomczak",

year = "2024",

month = sep,

day = "13",

doi = "10.1103/PhysRevLett.133.111802",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "11",

}

TY - JOUR

T1 - Search for leptonic decays of dark photons at NA62

AU - NA62 Collaboration

AU - Goudzovski, Evgueni

AU - Kenworthy, Chandler

AU - Lazzeroni, Cristina

AU - Romano, Angela

AU - Sanders, Jack

AU - Sergi, Antonino

AU - Tomczak, Adam

PY - 2024/9/13

Y1 - 2024/9/13

N2 - The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. The combined result for dark photon searches in lepton–antilepton final states is presented and a region of the parameter space is excluded at 90% confidence level, improving on previous experimental limits for dark photon mass values between 50 and 600 MeV/c2 and coupling values in the range 10-6 to 4×10-5. An interpretation of the e+e- search result in terms of the emission and decay of an axionlike particle is also presented.

AB - The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. The combined result for dark photon searches in lepton–antilepton final states is presented and a region of the parameter space is excluded at 90% confidence level, improving on previous experimental limits for dark photon mass values between 50 and 600 MeV/c2 and coupling values in the range 10-6 to 4×10-5. An interpretation of the e+e- search result in terms of the emission and decay of an axionlike particle is also presented.

U2 - 10.1103/PhysRevLett.133.111802

DO - 10.1103/PhysRevLett.133.111802

M3 - Article

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 111802

ER -

Search for leptonic decays of dark photons at NA62

Abstract

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Projects

KaonToALP - Search for axion-like particle production in kaon decays at CERN-NA62 experiment

H2020_IF_NEWLIGHTSCALAR

FP7_ERC_KaonLepton

Ernest Rutherford Fellowship : Dr Antonio Sergi - Development of the NA62 Detector and Search for New Physics with Kaon Decays

FP7 ERC - UniversaLepto : Test of Lepton Flavour Universality with Kaon Decays

Cite this