Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

ATLAS Collaboration; CMS Collaboration; S. Alderweireldt; J.F. Allen; T.M. Carter; P. J.  Clark; D. Duda; Karl Ehataht; S. M. Farrington; Y. Gao; J.M. Gargan; R.Y. Gonzalez Andana; C. Leonidopoulos; V. J.  Martin; L. Mijović; S. Paredes; V.A. Parrish; E.A. Pender; T. Qiu; E.P. Takeva; N. Themistokleous; E.M. Villhauer; B.M. Wynne; Z. Xu; E. Zaid

doi:10.1103/PhysRevLett.132.021803

Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

ATLAS Collaboration, CMS Collaboration, S. Alderweireldt, J.F. Allen, T.M. Carter, P. J. Clark, D. Duda, Karl Ehataht, S. M. Farrington, Y. Gao, J.M. Gargan, R.Y. Gonzalez Andana, C. Leonidopoulos, V. J. Martin, L. Mijović, S. Paredes, V.A. Parrish, E.A. Pender, T. Qiu, E.P. TakevaN. Themistokleous, E.M. Villhauer, B.M. Wynne, Z. Xu, E. Zaid

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The first evidence for the Higgs boson decay to a 𝑍 boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb−1 for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is 2.2±0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

Original language	English
Article number	021803
Pages (from-to)	1-32
Number of pages	32
Journal	Physical Review Letters
Volume	132
Issue number	2
Early online date	11 Jan 2024
DOIs	https://doi.org/10.1103/PhysRevLett.132.021803
Publication status	Published - 12 Jan 2024

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10.1103/PhysRevLett.132.021803Licence: Creative Commons: Attribution (CC-BY)

3 Finished
3 Active

Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/26
Project: Research
Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 31/03/26
Project: Research

Cite this

ATLAS Collaboration, CMS Collaboration, Alderweireldt, S., Allen, J. F., Carter, T. M., Clark, P. J., Duda, D., Ehataht, K., Farrington, S. M., Gao, Y., Gargan, J. M., Gonzalez Andana, R. Y., Leonidopoulos, C., Martin, V. J., Mijović, L., Paredes, S., Parrish, V. A., Pender, E. A., Qiu, T., ... Zaid, E. (2024). Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC. Physical Review Letters, 132(2), 1-32. Article 021803. https://doi.org/10.1103/PhysRevLett.132.021803

@article{9323a70f08994044a75ffcb4246513d1,

title = "Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC",

abstract = "The first evidence for the Higgs boson decay to a 𝑍 boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb−1 for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is 2.2±0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.",

author = "{ATLAS Collaboration} and {CMS Collaboration} and S. Alderweireldt and J.F. Allen and T.M. Carter and Clark, {P. J.} and D. Duda and Karl Ehataht and Farrington, {S. M.} and Y. Gao and J.M. Gargan and {Gonzalez Andana}, R.Y. and C. Leonidopoulos and Martin, {V. J.} and L. Mijovi{\'c} and S. Paredes and V.A. Parrish and E.A. Pender and T. Qiu and E.P. Takeva and N. Themistokleous and E.M. Villhauer and B.M. Wynne and Z. Xu and E. Zaid",

year = "2024",

month = jan,

day = "12",

doi = "10.1103/PhysRevLett.132.021803",

language = "English",

volume = "132",

pages = "1--32",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

ATLAS Collaboration, CMS Collaboration, Alderweireldt, S, Allen, JF, Carter, TM, Clark, PJ , Duda, D , Ehataht, K , Farrington, SM , Gao, Y, Gargan, JM, Gonzalez Andana, RY, Leonidopoulos, C , Martin, VJ , Mijović, L , Paredes, S, Parrish, VA, Pender, EA, Qiu, T, Takeva, EP, Themistokleous, N, Villhauer, EM, Wynne, BM , Xu, Z & Zaid, E 2024, 'Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC', Physical Review Letters, vol. 132, no. 2, 021803, pp. 1-32. https://doi.org/10.1103/PhysRevLett.132.021803

TY - JOUR

T1 - Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

AU - ATLAS Collaboration

AU - CMS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Carter, T.M.

AU - Clark, P. J.

AU - Duda, D.

AU - Ehataht, Karl

AU - Farrington, S. M.

AU - Gao, Y.

AU - Gargan, J.M.

AU - Gonzalez Andana, R.Y.

AU - Leonidopoulos, C.

AU - Martin, V. J.

AU - Mijović, L.

AU - Paredes, S.

AU - Parrish, V.A.

AU - Pender, E.A.

AU - Qiu, T.

AU - Takeva, E.P.

AU - Themistokleous, N.

AU - Villhauer, E.M.

AU - Wynne, B.M.

AU - Xu, Z.

AU - Zaid, E.

PY - 2024/1/12

Y1 - 2024/1/12

N2 - The first evidence for the Higgs boson decay to a 𝑍 boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb−1 for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is 2.2±0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

AB - The first evidence for the Higgs boson decay to a 𝑍 boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb−1 for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is 2.2±0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

U2 - 10.1103/PhysRevLett.132.021803

DO - 10.1103/PhysRevLett.132.021803

M3 - Article

SN - 0031-9007

VL - 132

SP - 1

EP - 32

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 021803

ER -

Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

Abstract

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Projects

Experimental Particle Physics at the University of Edinburgh

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Cite this