A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV

The ATLAS Collaboration; Y.  Abulaiti; A. C. Abusleme Hoffman; B. S. Acharya; C. Adam Bourdarios; L. Adamczyk; L. Adamek; S. V. Addepalli; M. J. Addison; J. Adelman; A. Adiguzel; T. Adye; A. A. Affolder; Y. Afik; M. N. Agaras; J. Agarwala; A. Aggarwal; C. Agheorghiesei; A. Ahmad; F. Ahmadov; W. S. Ahmed; S. Ahuja; X. Ai; G. Aielli; M. Ait Tamlihat

doi:10.48550/arXiv.2309.12986

A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV

The ATLAS Collaboration, Y. Abulaiti, A. C. Abusleme Hoffman, B. S. Acharya, C. Adam Bourdarios, L. Adamczyk, L. Adamek, S. V. Addepalli, M. J. Addison, J. Adelman, A. Adiguzel, T. Adye, A. A. Affolder, Y. Afik, M. N. Agaras, J. Agarwala, A. Aggarwal, C. Agheorghiesei, A. Ahmad, F. AhmadovW. S. Ahmed, S. Ahuja, X. Ai, G. Aielli, M. Ait Tamlihat

Research output: Working paper › Preprint

Abstract

The coupling constant of the strong force is determined from the transverse-momentum distribution of Z bosons produced in 8 TeV proton-proton collisions at the LHC and recorded by the ATLAS experiment. The Z-boson cross sections are measured in the full phase space of the decay leptons using 15.3 million electron and muon pairs, in a dataset collected in 2012 and corresponding to an integrated luminosity of 20.2 fb⁻¹. The analysis is based on predictions evaluated at third order in perturbative QCD, supplemented by the resummation of logarithmically enhanced contributions in the low transverse-momentum region of the lepton pairs. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is α_s(m_Z)=0.1183±0.0009. This is the most precise experimental determination of α_s(m_Z) achieved so far.

Original language	English
Pages	1-43
Number of pages	43
DOIs	https://doi.org/10.48550/arXiv.2309.12986
Publication status	Submitted - 22 Sept 2023
Externally published	Yes

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Name	arXiv

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The ATLAS Collaboration, Abulaiti, Y., Hoffman, A. C. A., Acharya, B. S., Bourdarios, C. A., Adamczyk, L., Adamek, L., Addepalli, S. V., Addison, M. J., Adelman, J., Adiguzel, A., Adye, T., Affolder, A. A., Afik, Y., Agaras, M. N., Agarwala, J., Aggarwal, A., Agheorghiesei, C., Ahmad, A., ... Ait Tamlihat, M. (2023). A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV. (pp. 1-43). (arXiv). https://doi.org/10.48550/arXiv.2309.12986

@techreport{0d800e83b60e42278d3c6e6e8901f2c3,

title = "A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV",

abstract = "The coupling constant of the strong force is determined from the transverse-momentum distribution of Z bosons produced in 8 TeV proton-proton collisions at the LHC and recorded by the ATLAS experiment. The Z-boson cross sections are measured in the full phase space of the decay leptons using 15.3 million electron and muon pairs, in a dataset collected in 2012 and corresponding to an integrated luminosity of 20.2 fb−1. The analysis is based on predictions evaluated at third order in perturbative QCD, supplemented by the resummation of logarithmically enhanced contributions in the low transverse-momentum region of the lepton pairs. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is αs(mZ)=0.1183±0.0009. This is the most precise experimental determination of αs(mZ) achieved so far. ",

author = "{The ATLAS Collaboration} and G. Aad and B. Abbott and K. Abeling and Abicht, {N. J.} and Abidi, {S. H.} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Hoffman, {A. C. Abusleme} and Acharya, {B. S.} and Bourdarios, {C. Adam} and L. Adamczyk and L. Adamek and Addepalli, {S. V.} and Addison, {M. J.} and J. Adelman and A. Adiguzel and T. Adye and Affolder, {A. A.} and Y. Afik and Agaras, {M. N.} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and S. Ahuja and X. Ai and G. Aielli and {Ait Tamlihat}, M. and J. Shojaii",

year = "2023",

month = sep,

day = "22",

doi = "10.48550/arXiv.2309.12986",

language = "English",

series = "arXiv",

pages = "1--43",

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The ATLAS Collaboration, Abulaiti, Y, Hoffman, ACA, Acharya, BS, Bourdarios, CA, Adamczyk, L, Adamek, L, Addepalli, SV, Addison, MJ, Adelman, J, Adiguzel, A, Adye, T, Affolder, AA, Afik, Y, Agaras, MN, Agarwala, J, Aggarwal, A, Agheorghiesei, C, Ahmad, A, Ahmadov, F, Ahmed, WS, Ahuja, S, Ai, X, Aielli, G & Ait Tamlihat, M 2023 'A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV' arXiv, pp. 1-43. https://doi.org/10.48550/arXiv.2309.12986

TY - UNPB

T1 - A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV

AU - The ATLAS Collaboration

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AU - Abbott, B.

AU - Abeling, K.

AU - Abicht, N. J.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Hoffman, A. C. Abusleme

AU - Acharya, B. S.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Addepalli, S. V.

AU - Addison, M. J.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Ait Tamlihat, M.

AU - Shojaii, J.

PY - 2023/9/22

Y1 - 2023/9/22

N2 - The coupling constant of the strong force is determined from the transverse-momentum distribution of Z bosons produced in 8 TeV proton-proton collisions at the LHC and recorded by the ATLAS experiment. The Z-boson cross sections are measured in the full phase space of the decay leptons using 15.3 million electron and muon pairs, in a dataset collected in 2012 and corresponding to an integrated luminosity of 20.2 fb−1. The analysis is based on predictions evaluated at third order in perturbative QCD, supplemented by the resummation of logarithmically enhanced contributions in the low transverse-momentum region of the lepton pairs. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is αs(mZ)=0.1183±0.0009. This is the most precise experimental determination of αs(mZ) achieved so far.

AB - The coupling constant of the strong force is determined from the transverse-momentum distribution of Z bosons produced in 8 TeV proton-proton collisions at the LHC and recorded by the ATLAS experiment. The Z-boson cross sections are measured in the full phase space of the decay leptons using 15.3 million electron and muon pairs, in a dataset collected in 2012 and corresponding to an integrated luminosity of 20.2 fb−1. The analysis is based on predictions evaluated at third order in perturbative QCD, supplemented by the resummation of logarithmically enhanced contributions in the low transverse-momentum region of the lepton pairs. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is αs(mZ)=0.1183±0.0009. This is the most precise experimental determination of αs(mZ) achieved so far.

UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-85176008231&partnerID=MN8TOARS

U2 - 10.48550/arXiv.2309.12986

DO - 10.48550/arXiv.2309.12986

M3 - Preprint

T3 - arXiv

SP - 1

EP - 43

BT - A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV

ER -

A precise determination of the strong-coupling constant from the recoil of Z bosons with the ATLAS experiment at √s = 8 TeV

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