Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector

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

doi:10.1016/j.physletb.2024.138705

Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector

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

School of Physics and Astronomy

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

Abstract

A measurement of the invisible width of the 𝑍 boson using events with jets and missing transverse momentum is presented using 37 fb−1 of 13 TeV proton–proton data collected by the ATLAS detector in 2015 and 2016. The ratio of 𝑍 → inv to 𝑍 → 𝓁𝓁 events, where inv refers to non-detected particles and 𝓁 is either an electron or a muon, is measured and corrected for detector effects. Events with at least one energetic central jet with 𝑝T ≥ 110 GeV are selected for both the 𝑍 → inv and 𝑍 → 𝓁𝓁 final states to obtain a similar phase space in the ratio. The invisible width is measured to be 506 ± 2 (stat.) ± 12 (syst.) MeV and is the single most precise recoil-based measurement. The result is in agreement with the most precise determination from LEP and the Standard Model prediction based on three neutrino generations.

Original language	English
Article number	138705
Pages (from-to)	1-25
Number of pages	25
Journal	Physics Letters B
Volume	854
Early online date	10 May 2024
DOIs	https://doi.org/10.1016/j.physletb.2024.138705
Publication status	Published - 17 May 2024

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3 Finished
3 Active

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/27
Project: Research
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
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, Alderweireldt, S., Allen, J. F., Carter, T. M., Clark, P. J., Duda, D., Farrington, S. M., Gargan, J. M., Gonzalez Andana, R. Y., Leonidopoulos, C., Mijović, L., Parrish, V. A., Pender, E. A., Qiu, T., Takeva, E. P., Themistokleous, N., Villhauer, E. M., Wynne, B. M., Xu, Z., & Zaid, E. (2024). Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector. Physics Letters B, 854, 1-25. Article 138705. https://doi.org/10.1016/j.physletb.2024.138705

@article{772496eb72a24a08a50c175354ecd108,

title = "Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector",

abstract = "A measurement of the invisible width of the 𝑍 boson using events with jets and missing transverse momentum is presented using 37 fb−1 of 13 TeV proton–proton data collected by the ATLAS detector in 2015 and 2016. The ratio of 𝑍 → inv to 𝑍 → 𝓁𝓁 events, where inv refers to non-detected particles and 𝓁 is either an electron or a muon, is measured and corrected for detector effects. Events with at least one energetic central jet with 𝑝T ≥ 110 GeV are selected for both the 𝑍 → inv and 𝑍 → 𝓁𝓁 final states to obtain a similar phase space in the ratio. The invisible width is measured to be 506 ± 2 (stat.) ± 12 (syst.) MeV and is the single most precise recoil-based measurement. The result is in agreement with the most precise determination from LEP and the Standard Model prediction based on three neutrino generations.",

author = "{ATLAS Collaboration} and S. Alderweireldt and J.F. Allen and T.M. Carter and Clark, {P. J.} and D. Duda and Farrington, {S. M.} and J.M. Gargan and {Gonzalez Andana}, R.Y. and C. Leonidopoulos and L. Mijovi{\'c} 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 = may,

day = "17",

doi = "10.1016/j.physletb.2024.138705",

language = "English",

volume = "854",

pages = "1--25",

journal = "Physics Letters B",

issn = "0370-2693",

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ATLAS Collaboration, Alderweireldt, S, Allen, JF, Carter, TM, Clark, PJ , Duda, D , Farrington, SM, Gargan, JM, Gonzalez Andana, RY, Leonidopoulos, C , Mijović, L, Parrish, VA, Pender, EA, Qiu, T, Takeva, EP, Themistokleous, N, Villhauer, EM, Wynne, BM , Xu, Z & Zaid, E 2024, 'Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector', Physics Letters B, vol. 854, 138705, pp. 1-25. https://doi.org/10.1016/j.physletb.2024.138705

TY - JOUR

T1 - Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Carter, T.M.

AU - Clark, P. J.

AU - Duda, D.

AU - Farrington, S. M.

AU - Gargan, J.M.

AU - Gonzalez Andana, R.Y.

AU - Leonidopoulos, C.

AU - Mijović, L.

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 - 2024/5/17

Y1 - 2024/5/17

N2 - A measurement of the invisible width of the 𝑍 boson using events with jets and missing transverse momentum is presented using 37 fb−1 of 13 TeV proton–proton data collected by the ATLAS detector in 2015 and 2016. The ratio of 𝑍 → inv to 𝑍 → 𝓁𝓁 events, where inv refers to non-detected particles and 𝓁 is either an electron or a muon, is measured and corrected for detector effects. Events with at least one energetic central jet with 𝑝T ≥ 110 GeV are selected for both the 𝑍 → inv and 𝑍 → 𝓁𝓁 final states to obtain a similar phase space in the ratio. The invisible width is measured to be 506 ± 2 (stat.) ± 12 (syst.) MeV and is the single most precise recoil-based measurement. The result is in agreement with the most precise determination from LEP and the Standard Model prediction based on three neutrino generations.

AB - A measurement of the invisible width of the 𝑍 boson using events with jets and missing transverse momentum is presented using 37 fb−1 of 13 TeV proton–proton data collected by the ATLAS detector in 2015 and 2016. The ratio of 𝑍 → inv to 𝑍 → 𝓁𝓁 events, where inv refers to non-detected particles and 𝓁 is either an electron or a muon, is measured and corrected for detector effects. Events with at least one energetic central jet with 𝑝T ≥ 110 GeV are selected for both the 𝑍 → inv and 𝑍 → 𝓁𝓁 final states to obtain a similar phase space in the ratio. The invisible width is measured to be 506 ± 2 (stat.) ± 12 (syst.) MeV and is the single most precise recoil-based measurement. The result is in agreement with the most precise determination from LEP and the Standard Model prediction based on three neutrino generations.

U2 - 10.1016/j.physletb.2024.138705

DO - 10.1016/j.physletb.2024.138705

M3 - Letter

SN - 0370-2693

VL - 854

SP - 1

EP - 25

JO - Physics Letters B

JF - Physics Letters B

M1 - 138705

ER -

Measurement of the Z boson invisible width at s=13 TeV with the ATLAS detector

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Projects

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

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Cite this