Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at root 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 ]
Dragicevic, M. [2 ]
Eroe, J. [2 ]
Del Valle, A. Escalante [2 ]
Flechl, M. [2 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ,202 ]
Ghete, V. M. [2 ]
Grossmann, J. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ,202 ]
Koenig, A. [2 ]
Krammer, N. [2 ]
Kraetschmer, I. [2 ]
Liko, D. [2 ]
Madlener, T. [2 ]
Mikulec, I. [2 ]
Pree, E. [2 ]
Rad, N. [2 ]
Rohringer, H. [2 ]
Schieck, J. [2 ,202 ]
Schoefbeck, R. [2 ]
Spanring, M. [2 ]
Spitzbart, D. [2 ]
Taurok, A. [2 ]
Waltenberger, W. [2 ]
Wittmann, J. [2 ]
Wulz, C. -E. [2 ,202 ]
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 ]
Pieters, M. [4 ]
Van de Klundert, M. [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [4 ]
Abu Zeid, S. [5 ]
Blekman, F. [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 La Neuve, Belgium
[9] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[10] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[11] Univ Estadual Paulista, Sao Paulo, Brazil
[12] Univ Fed ABC, Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, Sofia, Bulgaria
[15] Beihang Univ, Beijing, Peoples R China
[16] Inst High Energy Phys, Beijing, Peoples R China
[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[18] Tsinghua Univ, 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] Inst Rudjer Boskovic, 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, Ecole Polytech,Lab Leprince Ringuet, Palaiseau, France
[33] Univ Strasbourg, CNRS, UMR 7178, IPHC, F-67000 Strasbourg, France
[34] CNRS, IN2P3, Ctr Calcul, Inst Natl Phys Nucl & Phys Particules, Villeurbanne, France
[35] Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, Inst Phys Nucl Lyon,IN2P3, 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 Teilchenphys, Karlsruhe, Germany
[44] NCSR Demokritos, INPP, Aghia Paraskevi, Greece
[45] Natl & Kapodistrian Univ Athens, Athens, Greece
[46] Natl Tech Univ Athens, Athens, Greece
[47] Univ Ioannina, Ioannina, Greece
[48] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary
[49] Wigner Res Ctr Phys, Budapest, Hungary
[50] Inst Nucl Res ATOMKI, Debrecen, Hungary
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 06期
基金
美国国家科学基金会; 巴西圣保罗研究基金会; 新加坡国家研究基金会; 奥地利科学基金会; 英国科学技术设施理事会; 中国国家自然科学基金; 芬兰科学院; 俄罗斯基础研究基金会; 欧洲研究理事会;
关键词
Hadron-Hadron scattering (experiments); Higgs physics; BROKEN SYMMETRIES; PARTICLES;
D O I
10.1007/JHEP06(2018)127
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
A search for a new scalar resonance decaying to a pair of Z bosons is performed in the mass range from 130 GeV to 3TeV, and for various width scenarios. The analysis is based on proton-proton collisions recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb(-1) at a center-of-mass energy of 13TeV. The Z boson pair decays are reconstructed using the 4l, 2l2q, and 2l2 nu final states, where l = e or mu. Both gluon fusion and electroweak production of the scalar resonance are considered, with a free parameter describing their relative cross sections. A dedicated categorization of events, based on the kinematic properties of associated jets, and matrix element techniques are employed for an optimal signal and background separation. A description of the interference between signal and background amplitudes for a resonance of an arbitrary width is included. No significant excess of events with respect to the standard model expectation is observed and limits are set on the product of the cross section for a new scalar boson and the branching fraction for its decay to ZZ for a large range of masses and widths.
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页数:54
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