Research output: Contribution to journal › Article › peer-review
Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production. / The CMS collaboration.
In: Nature Physics, Vol. 18, No. 11, 11.2022, p. 1329-1334.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production
AU - The CMS collaboration
AU - Tumasyan, A.
AU - Adam, W.
AU - Andrejkovic, J. W.
AU - Bergauer, T.
AU - Chatterjee, S.
AU - Damanakis, K.
AU - Dragicevic, M.
AU - Del Valle, A. Escalante
AU - Frühwirth, R.
AU - Jeitler, M.
AU - Krammer, N.
AU - Lechner, L.
AU - Liko, D.
AU - Mikulec, I.
AU - Paulitsch, P.
AU - Pitters, F. M.
AU - Schieck, J.
AU - Schöfbeck, R.
AU - Schwarz, D.
AU - Templ, S.
AU - Waltenberger, W.
AU - Wulz, C. E.
AU - Chekhovsky, V.
AU - Litomin, A.
AU - Makarenko, V.
AU - Darwish, M. R.
AU - De Wolf, E. A.
AU - Janssen, T.
AU - Kello, T.
AU - Lelek, A.
AU - Sfar, H. Rejeb
AU - Van Mechelen, P.
AU - Van Putte, S.
AU - Van Remortel, N.
AU - Bols, E. S.
AU - D’Hondt, J.
AU - De Moor, A.
AU - Delcourt, M.
AU - El Faham, H.
AU - Lowette, S.
AU - Moortgat, S.
AU - Morton, A.
AU - Müller, D.
AU - Blinov, V.
AU - Dimova, T.
AU - Kardapoltsev, L.
AU - Kozyrev, A.
AU - Ovtin, I.
AU - Radchenko, O.
AU - Skovpen, Y.
N1 - Publisher Copyright: © CERN 2022.
PY - 2022/11
Y1 - 2022/11
N2 - Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width—related to its lifetime—is an important parameter. One way to determine this quantity is to measure its off-shell production, where the Higgs boson mass is far away from its nominal value, and relating it to its on-shell production, where the mass is close to the nominal value. Here we report evidence for such off-shell contributions to the production cross-section of two Z bosons with data from the CMS experiment at the CERN Large Hadron Collider. We constrain the total rate of the off-shell Higgs boson contribution beyond the Z boson pair production threshold, relative to its standard model expectation, to the interval [0.0061, 2.0] at the 95% confidence level. The scenario with no off-shell contribution is excluded at a p-value of 0.0003 (3.6 standard deviations). We measure the width of the Higgs boson as ΓH=3.2−1.7+2.4MeV, in agreement with the standard model expectation of 4.1 MeV. In addition, we set constraints on anomalous Higgs boson couplings to W and Z boson pairs.
AB - Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width—related to its lifetime—is an important parameter. One way to determine this quantity is to measure its off-shell production, where the Higgs boson mass is far away from its nominal value, and relating it to its on-shell production, where the mass is close to the nominal value. Here we report evidence for such off-shell contributions to the production cross-section of two Z bosons with data from the CMS experiment at the CERN Large Hadron Collider. We constrain the total rate of the off-shell Higgs boson contribution beyond the Z boson pair production threshold, relative to its standard model expectation, to the interval [0.0061, 2.0] at the 95% confidence level. The scenario with no off-shell contribution is excluded at a p-value of 0.0003 (3.6 standard deviations). We measure the width of the Higgs boson as ΓH=3.2−1.7+2.4MeV, in agreement with the standard model expectation of 4.1 MeV. In addition, we set constraints on anomalous Higgs boson couplings to W and Z boson pairs.
UR - http://www.scopus.com/inward/record.url?scp=85140310896&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/8738304b-6b5e-3903-8336-9327a3593401/
U2 - 10.1038/s41567-022-01682-0
DO - 10.1038/s41567-022-01682-0
M3 - Article
AN - SCOPUS:85140310896
VL - 18
SP - 1329
EP - 1334
JO - Nature Physics
JF - Nature Physics
SN - 1745-2473
IS - 11
ER -
ID: 38369848