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Measurement of the K+ → π+γγ decay

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Measurement of the K+ → π+γγ decay. / The NA62 Collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 850, 138513, 31.03.2024, p. 138513.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

The NA62 Collaboration 2024, 'Measurement of the K+ → π+γγ decay', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 850, 138513, pp. 138513. https://doi.org/10.1016/j.physletb.2024.138513

APA

The NA62 Collaboration (2024). Measurement of the K+ → π+γγ decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 850, 138513. Article 138513. https://doi.org/10.1016/j.physletb.2024.138513

Vancouver

The NA62 Collaboration. Measurement of the K+ → π+γγ decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2024 Mar 31;850:138513. 138513. Epub 2024 Feb 13. doi: 10.1016/j.physletb.2024.138513

Author

The NA62 Collaboration. / Measurement of the K+ → π+γγ decay. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2024 ; Vol. 850. pp. 138513.

Bibtex

@article{c82202462f264f6c9626c7dfd38d8e1d,
title = "Measurement of the K+ → π+γγ decay",
abstract = "A sample of 3984 candidates of the K +→π +γγ decay, with an estimated background of 291±14 events, was collected by the NA62 experiment at CERN during 2017–2018. In order to describe the observed di-photon mass spectrum, the next-to-leading order contribution in chiral perturbation theory was found to be necessary. The decay branching ratio in the full kinematic range is measured to be (9.61±0.17)×10 −7. The first search for production and prompt decay of an axion-like particle with gluon coupling in the process K +→π +a, a→γγ is also reported.",
author = "{The NA62 Collaboration} and {Cortina Gil}, E. and A. Kleimenova and E. Minucci and S. Padolski and P. Petrov and A. Shaikhiev and R. Volpe and T. Numao and Y. Petrov and B. Velghe and V.W.S. Wong and D. Bryman and J. Fu and Z. Hives and T. Husek and J. Jerhot and K. Kampf and M. Zamkovsky and {De Martino}, B. and M. Perrin-Terrin and B. D{\"o}brich and S. Lezki and A.T. Akmete and R. Aliberti and G. Khoriauli and J. Kunze and D. Lomidze and L. Peruzzo and M. Vormstein and R. Wanke and P. Dalpiaz and M. Fiorini and A. Mazzolari and I. Neri and A. Norton and F. Petrucci and M. Soldani and H. Wahl and L. Gatignon and K. Massri and J.R. Fry and C. Parkinson and R. Page and D. Britton and C. Graham and J. Carmignani and J.B. Dainton and R.W.L. Jones and G. Ruggiero and P. Cooper",
year = "2024",
month = mar,
day = "31",
doi = "10.1016/j.physletb.2024.138513",
language = "English",
volume = "850",
pages = "138513",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Measurement of the K+ → π+γγ decay

AU - The NA62 Collaboration

AU - Cortina Gil, E.

AU - Kleimenova, A.

AU - Minucci, E.

AU - Padolski, S.

AU - Petrov, P.

AU - Shaikhiev, A.

AU - Volpe, R.

AU - Numao, T.

AU - Petrov, Y.

AU - Velghe, B.

AU - Wong, V.W.S.

AU - Bryman, D.

AU - Fu, J.

AU - Hives, Z.

AU - Husek, T.

AU - Jerhot, J.

AU - Kampf, K.

AU - Zamkovsky, M.

AU - De Martino, B.

AU - Perrin-Terrin, M.

AU - Döbrich, B.

AU - Lezki, S.

AU - Akmete, A.T.

AU - Aliberti, R.

AU - Khoriauli, G.

AU - Kunze, J.

AU - Lomidze, D.

AU - Peruzzo, L.

AU - Vormstein, M.

AU - Wanke, R.

AU - Dalpiaz, P.

AU - Fiorini, M.

AU - Mazzolari, A.

AU - Neri, I.

AU - Norton, A.

AU - Petrucci, F.

AU - Soldani, M.

AU - Wahl, H.

AU - Gatignon, L.

AU - Massri, K.

AU - Fry, J.R.

AU - Parkinson, C.

AU - Page, R.

AU - Britton, D.

AU - Graham, C.

AU - Carmignani, J.

AU - Dainton, J.B.

AU - Jones, R.W.L.

AU - Ruggiero, G.

AU - Cooper, P.

PY - 2024/3/31

Y1 - 2024/3/31

N2 - A sample of 3984 candidates of the K +→π +γγ decay, with an estimated background of 291±14 events, was collected by the NA62 experiment at CERN during 2017–2018. In order to describe the observed di-photon mass spectrum, the next-to-leading order contribution in chiral perturbation theory was found to be necessary. The decay branching ratio in the full kinematic range is measured to be (9.61±0.17)×10 −7. The first search for production and prompt decay of an axion-like particle with gluon coupling in the process K +→π +a, a→γγ is also reported.

AB - A sample of 3984 candidates of the K +→π +γγ decay, with an estimated background of 291±14 events, was collected by the NA62 experiment at CERN during 2017–2018. In order to describe the observed di-photon mass spectrum, the next-to-leading order contribution in chiral perturbation theory was found to be necessary. The decay branching ratio in the full kinematic range is measured to be (9.61±0.17)×10 −7. The first search for production and prompt decay of an axion-like particle with gluon coupling in the process K +→π +a, a→γγ is also reported.

U2 - 10.1016/j.physletb.2024.138513

DO - 10.1016/j.physletb.2024.138513

M3 - Journal article

VL - 850

SP - 138513

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138513

ER -