Measurement of the Higgs boson total decay width using the H → W W → e ν μ ν decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The Higgs boson (H) decay width is determined from the ratio of off- and on-shell production of 𝐻 →𝑊⁢𝑊 →𝑒⁢𝜈⁢𝜇⁢𝜈 using proton–proton collision data corresponding to an integrated luminosity of 138 fb$^{−1}$ collected at √𝑠 =13 TeV by the CMS experiment at the Large Hadron Collider. The off-shell signal strength is measured as 𝜇$ -{off−shell}$ =1.2$^{+0.8}_{−0.7}$. The Higgs boson total decay width is Γ$_𝐻$ =3.9$^{+2.7}_{−2.2}$ MeV, in agreement with the standard model prediction. The uncertainty in this result represents a factor of 3 improvement over the previous CMS result in this decay channel.

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Publication Details

Journal
KITopen
Published
2026-07-27
DOI
https://doi.org/10.5445/ir/1000195701
Primary Topic
Particle physics theoretical and experimental studies
Type
article
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article

Measurement of the Higgs boson total decay width using the H → W W → e ν μ ν decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A Sharma, F Zhang, A Das, P Van Mechelen et al.
KITopen
Particle physics theoretical and experimental studies
article

Measurement of the Higgs boson total decay width using the H → W W → e ν μ ν decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A Sharma, F Zhang, A Das, P Van Mechelen, I V Makarenko, Alves GA, An Li, Schieck, C. Hensel, C Sturm for the KaoS Collaboration, K Skovpen, V Lemaître, K. Kaspar, D. Kavtaradze, M Delcourt, J D'hondt, H Kwon, M N Matthewman, G W P De lentdecker, S L Bein, J Van der linden, G P Van onsem, M G Tytgat, M G Dragicevic, T Bergauer, B Clerbaux, A Tumasyan, S R J Lowette, L Thomas, N Krammer, V Makarenko, L Favart, P Vanlaer, A Giammanco, S Van putte, S Tavernier, A Benecke, C Delaere, A F Moor, M. De Coen, C.-E. Wulz, J. Lidrych, C. Mora Herrera, P. Kashko, P. Malek, T. Van Laer, F. Heyen, S. Turkcapar, W. L. Aldá Júnior, G. Gokbulut, N. Van Den Bossche, M. Vanden Bemden, C. Vander Velde, D. Dobur, D. Marckx, P. S. Hussain, J. Bierkens, J. De Favereau De Jeneret, M. Jeitler, A. Vilela Pereira, P. Gianneios, F. Gameiro Casalinho, J. Vandenbroeck, D. Vannerom, Y. Hong, G. Bruno, H. Evard, P. Mastrapasqua, H. Aarup Petersen, M. Shooshtari, W. Waltenberger, A. Cappati, N. Breugelmans, E. Coelho, M. Barroso Ferreira Filho, A. O. Guzel, D. Liko, M. A. Shahzad, R. Schöfbeck, S. Dansana, D. Matos Figueiredo, B. Bilin, T. Menezes De Oliveira, M. Sonawane, A. Khalilzadeh, I. De Bruyn, D. Ocampo Henao, A. M. Tomaru, A. Bethani, T. Janssen, A. Hayrapetyan, P. Rebello Teles, E. J. Tonelli Manganote, W. Adam, A. Malara, L. Benato, M. Soeiro, C. Giordano, D. Müller, F. A. Khan
article en

Abstract

The Higgs boson (H) decay width is determined from the ratio of off- and on-shell production of 𝐻 →𝑊⁢𝑊 →𝑒⁢𝜈⁢𝜇⁢𝜈 using proton–proton collision data corresponding to an integrated luminosity of 138 fb$^{−1}$ collected at √𝑠 =13 TeV by the CMS experiment at the Large Hadron Collider. The off-shell signal strength is measured as 𝜇$ -{off−shell}$ =1.2$^{+0.8}_{−0.7}$. The Higgs boson total decay width is Γ$_𝐻$ =3.9$^{+2.7}_{−2.2}$ MeV, in agreement with the standard model prediction. The uncertainty in this result represents a factor of 3 improvement over the previous CMS result in this decay channel.

KITopen
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Particle physics theoretical and experimental studies
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