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Evidence for the spin-0 nature of the Higgs boson using ATLAS data

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Evidence for the spin-0 nature of the Higgs boson using ATLAS data. / ATLAS Collaboration ; Acharya, B. S.

In: Physics Letters B, Vol. 726, No. 1-3, N/A, 07.10.2013, p. 120-144.

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Harvard

ATLAS Collaboration & Acharya, BS 2013, 'Evidence for the spin-0 nature of the Higgs boson using ATLAS data', Physics Letters B, vol. 726, no. 1-3, N/A, pp. 120-144. https://doi.org/10.1016/j.physletb.2013.08.026

APA

ATLAS Collaboration, & Acharya, B. S. (2013). Evidence for the spin-0 nature of the Higgs boson using ATLAS data. Physics Letters B, 726(1-3), 120-144. [N/A]. https://doi.org/10.1016/j.physletb.2013.08.026

Vancouver

ATLAS Collaboration, Acharya BS. Evidence for the spin-0 nature of the Higgs boson using ATLAS data. Physics Letters B. 2013 Oct 7;726(1-3):120-144. N/A. https://doi.org/10.1016/j.physletb.2013.08.026

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ATLAS Collaboration ; Acharya, B. S. / Evidence for the spin-0 nature of the Higgs boson using ATLAS data. In: Physics Letters B. 2013 ; Vol. 726, No. 1-3. pp. 120-144.

Bibtex Download

@article{dcf9f8197a784239b55f0388a8c625c8,
title = "Evidence for the spin-0 nature of the Higgs boson using ATLAS data",
abstract = "Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb-1 collected at a centre-of-mass energy of s=8TeV. For the H→ZZ*→4ℓ decay mode the dataset corresponding to an integrated luminosity of 4.6 fb-1 collected at s=7TeV is included. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific JP=0-, 1+, 1-, 2+ models, are excluded at confidence levels above 97.8{\%}. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.",
author = "{ATLAS Collaboration} and Acharya, {B. S.}",
year = "2013",
month = "10",
day = "7",
doi = "10.1016/j.physletb.2013.08.026",
language = "English",
volume = "726",
pages = "120--144",
journal = "Physics Letters B",
issn = "0370-2693",
number = "1-3",

}

RIS (suitable for import to EndNote) Download

TY - JOUR

T1 - Evidence for the spin-0 nature of the Higgs boson using ATLAS data

AU - ATLAS Collaboration

AU - Acharya, B. S.

PY - 2013/10/7

Y1 - 2013/10/7

N2 - Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb-1 collected at a centre-of-mass energy of s=8TeV. For the H→ZZ*→4ℓ decay mode the dataset corresponding to an integrated luminosity of 4.6 fb-1 collected at s=7TeV is included. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific JP=0-, 1+, 1-, 2+ models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.

AB - Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb-1 collected at a centre-of-mass energy of s=8TeV. For the H→ZZ*→4ℓ decay mode the dataset corresponding to an integrated luminosity of 4.6 fb-1 collected at s=7TeV is included. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific JP=0-, 1+, 1-, 2+ models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.

U2 - 10.1016/j.physletb.2013.08.026

DO - 10.1016/j.physletb.2013.08.026

M3 - Article

VL - 726

SP - 120

EP - 144

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-3

M1 - N/A

ER -

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