Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at √s=13 TeV

被引:0
|
作者
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Ambrogi, F. [2 ]
Asilar, E. [2 ]
Bergauer, T. [2 ]
Brandstetter, J. [2 ]
Brondolin, E. [2 ]
Eroe, J. [2 ]
Flechl, M. [2 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ,201 ]
Ghete, V. M. [2 ]
Grossmann, J. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ,201 ]
Koenig, A. [2 ]
Krammer, N. [2 ]
Kraetschmer, I. [2 ]
Liko, D. [2 ]
Madlener, T. [2 ]
Mikulec, I. [2 ]
Pree, E. [2 ]
Rabady, D. [2 ]
Rad, N. [2 ]
Rohringer, H. [2 ]
Schieck, J. [2 ,201 ]
Schoefbeck, R. [2 ]
Spanring, M. [2 ]
Spitzbart, D. [2 ]
Waltenberger, W. [2 ]
Wittmann, J. [2 ]
Wulzi, C. -E. [2 ,201 ]
Zarucki, M. [2 ]
Chekhovsky, V. [3 ]
Mossolov, V. [3 ]
Gonzalez, J. Suarez [3 ]
De Wolf, E. A. [4 ]
Di Croce, D. [4 ]
Janssen, X. [4 ]
Lauwers, J. [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [4 ]
Abu Zeid, S. [5 ]
Blekman, F. [5 ]
D'Hondt, J. [5 ]
De Bruyn, I. [5 ]
De Clercq, J. [5 ]
Deroover, K. [5 ]
机构
[1] Yerevan Phys Inst, Yerevan, Armenia
[2] Inst Hochenergiephys, Vienna, Austria
[3] Inst Nucl Problems, Minsk, BELARUS
[4] Univ Antwerp, Antwerp, Belgium
[5] Vrije Univ Brussel, Brussels, Belgium
[6] Univ Libre Bruxelles, Brussels, Belgium
[7] Univ Ghent, Ghent, Belgium
[8] Catholic Univ Louvain, Louvain, Belgium
[9] Univ Mons, Mons, Belgium
[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[11] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[12] Univ Estadual Paulista, Sao Paulo, Brazil
[13] Univ Fed ABC, Sao Paulo, Brazil
[14] Bulgaria Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[15] Univ Sofia, Sofia, Bulgaria
[16] Beihang Univ, Beijing, Peoples R China
[17] Inst High Energy Phys, Beijing, Peoples R China
[18] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[19] Univ Los Andes, Bogota, Colombia
[20] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[21] Univ Split, Fac Sci, Split, Croatia
[22] Rudjer Boskovic Inst, Zagreb, Croatia
[23] Univ Cyprus, Nicosia, Cyprus
[24] Charles Univ Prague, Prague, Czech Republic
[25] Univ San Francisco Quito, Quito, Ecuador
[26] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
[27] NICPB, Tallinn, Estonia
[28] Univ Helsinki, Dept Phys, Helsinki, Finland
[29] Helsinki Inst Phys, Helsinki, Finland
[30] Lappeenranta Univ Technol, Lappeenranta, Finland
[31] Univ Paris Saclay, IRFU, CEA, Gif Sur Yvette, France
[32] Univ Paris Saclay, CNRS IN2P3, Lab Leprince Ringuet, Ecole Polytech, Palaiseau, France
[33] Univ Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
[34] CNRS, IN2P3, Inst Natl Phys Nucl & Phys, Ctr Calcul, Villeurbanne, France
[35] Univ Claude Bernard Lyon 1, CNRS IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France
[36] Georgian Tech Univ, Tbilisi, Georgia
[37] Tbilisi State Univ, Tbilisi, Georgia
[38] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[39] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[40] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[41] DESY, Hamburg, Germany
[42] Univ Hamburg, Hamburg, Germany
[43] Inst Expt Kernphys, Karlsruhe, Germany
[44] NCSR Demokritos, Inst Nucl & Particle Phys, Aghia Paraskevi, Greece
[45] Natl & Kapodistrian Univ Athens, Athens, Greece
[46] Univ Ioannina, Ioannina, Greece
[47] Eotvos Lorand Univ, MTA ELTE Lendiilet CMS Particle & Nucl Phys Grp, Budapest, Hungary
[48] Wigner Res Ctr Phys, Budapest, Hungary
[49] Inst Nucl Res ATOMKI, Debrecen, Hungary
[50] Univ Debrecen, Inst Phys, Debrecen, Hungary
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 11期
基金
英国科学技术设施理事会; 美国国家科学基金会; 欧洲研究理事会; 新加坡国家研究基金会; 俄罗斯基础研究基金会; 芬兰科学院; 奥地利科学基金会; 中国国家自然科学基金; 巴西圣保罗研究基金会;
关键词
Hadron-Hadron scattering (experiments); Higgs physics; BROKEN SYMMETRIES; GAUGE; PARTICLES;
D O I
10.1007/JHEP11(2017)047
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Properties of the Higgs boson are measured in the H -> ZZ -> 4l (l = e, mu) decay channel. A data sample of proton-proton collisions at root s = 13 TeV, collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 35.9 fb(-1) is used. The signal strength modifier mu, defined as the ratio of the observed Higgs boson rate in the H -> ZZ -> 4l decay channel to the standard model expectation, is measured to be mu = 1.05(-0.17)(+0.19) at m(H) = 125.09 GeV, the combined ATLAS and CMS measurement of the Higgs boson mass. The signal strength modifiers for the individual Higgs boson production modes are also measured. The cross section in the fiducial phase space defined by the requirements on lepton kinematics and event topology is measured to be 2.92(-0.44)(+0.48)(stat) (+0.28)(-0.24)(syst) fb, which is compatible with the standard model prediction of 2.76 +/- 0.14 fb. Differential cross sections are reported as a function of the transverse momentum of the Higgs boson, the number of associated jets, and the transverse momentum of the leading associated jet. The Higgs boson mass is measured to be m(H) = 125.26 +/- 0.21 GeV and the width is constrained using the on-shell invariant mass distribution to be Gamma(H) < 1.10 GeV, at 95% confidence level.
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