Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at √s=13 TeV

被引：12

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
]}

Ero, J. ^{[2
]}

Flechl, M. ^{[2
]}

Friedl, M. ^{[2
]}

Fruhwirth, R. ^{[2
,200
]}

Ghete, V. M. ^{[2
]}

Grossmann, J. ^{[2
]}

Hormann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,200
]}

Konig, A. ^{[2
]}

Kratschmer, 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
,200
]}

Schofbeck, R. ^{[2
]}

Spanring, M. ^{[2
]}

Spitzbart, D. ^{[2
]}

Strauss, J. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wittmann, J. ^{[2
]}

Wulz, C. -E. ^{[2
,200
]}

Zarucki, M. ^{[2
]}

Chekhovsky, V. ^{[3
]}

Mossolov, V. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

De Wolf, E. A. ^{[4
]}

Janssen, X. ^{[4
]}

Lauwers, J. ^{[4
]}

De Klundert, M. Van ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, R. ^{[4
]}

Van Remortel, N. ^{[4
]}

Van Spilbeeck, A. ^{[4
]}

Abu Zeid, S. ^{[5
]}

Blekman, F. ^{[5
]}

D'Hondt, J. ^{[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] Univ Catholic 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] Bulgarian 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] Inst Rudjer Boskov, Zagreb, Croatia

[23] Univ Cyprus, Nicosia, Cyprus

[24] Charles Univ Prague, Prague, Czech Republic

[25] Univ San Francisco Quito, Quito, Ecuador

[26] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, 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, Lab Leprince Ringuet, Ecole polytechn, CNRS IN2P3, Palaiseau, France

[33] Univ Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France

[34] Ctr Calcul Inst Natl Phys Nucleaire & Phys Partic, CNRS IN2P3, Villeurbanne, France

[35] Univ Lyon, Univ Claude Bernard Lyon, Inst Phys Nucl Lyon, CNRS IN2P3, Villeurbanne, France

[36] Georgian Tech Univ, Tbilisi, Georgia

[37] Tbilisi State Univ, Tbilisi, Georgia

[38] RWTH Aachen Univ I, Inst Phys, Aachen, Germany

[39] RWTH Aachen Univ III, Phys Inst A, Aachen, Germany

[40] RWTH Aachen Univ III, Phys Inst B, Aachen, Germany

[41] Deutsch Elekt Synchrotron, Hamburg, Germany

[42] Univ Hamburg, Hamburg, Germany

[43] Inst Expt Kernphys, Karlsruhe, Germany

[44] Inst Nucl & Particle Phys INPP, NCSR Demokritos, Aghia Paraskevi, Greece

[45] Natl & Kapodistrian Univ Athens, Athens, Greece

[46] Univ Ioannina, Ioannina, Greece

[47] Eotvos Lorand Univ, MTA ELTE Lendulet 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：

PHYSICS LETTERS B | 2017年 / 775卷

基金：

芬兰科学院; 美国国家科学基金会; 巴西圣保罗研究基金会;

关键词：

CMS; Exotica; COLLISIONS; MODELS;

D O I：

10.1016/j.physletb.2017.11.001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for physics beyond the standard model in the final state with two same-flavour leptons (electrons or muons) and two quarks produced in proton-proton collisions at root s = 13 TeVis presented. The data were recorded by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 2.3 fb(-1). The observed data are in good agreement with the standard model background prediction. The results of the measurement are interpreted in the framework of a recently proposed model in which a heavy Majorana neutrino, N-l, stems from a composite-fermion scenario. Exclusion limits are set for the first time on the mass of the heavy composite Majorana neutrino, m(Nl), and the compositeness scale Lambda. For the case m(Nl) = Lambda, the existence of N-e (N-mu) is excluded for masses up to 4.60 (4.70) TeV at 95% confidence level. (C) 2017 The Author(s). Published by Elsevier B.V.

引用

页码：315 / 337

页数：23

共 40 条

[21] A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction
Frixione, Stefano
Ridolfi, Giovanni
Nason, Paolo
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2007, (09):
[22] COMPOSITE MODELS OF LEPTONS
GREENBERG, OW
NELSON, CA
[J]. PHYSICAL REVIEW D, 1974, 10 (08) : 2567 - 2573
[23] COMPOSITE MODELS FOR QUARKS AND LEPTONS
HARARI, H
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 104 (2-4): : 159 - 179
[24] Confidence level computation for combining searches with small statistics
Junk, T
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 434 (2-3) : 435 - 443
[25] Search for narrow resonances in dilepton mass spectra in proton-proton collisions at √s=13 TeV and combination with 8 TeV data
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Eroe, J.
Flechl, M.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hartl, C.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Koenig, A.
Kraetschmer, I.
Liko, D.
Matsushita, T.
Mikulec, I.
Rabady, D.
Rad, N.
Rahbaran, B.
Rohringer, H.
Schieck, J.
Strauss, J.
Treberer-Treberspurg, W.
Waltenberger, W.
Wulz, C. -E.
Mossolov, V.
Shumeiko, N.
Gonzalez, J. Suarez
Alderweireldt, S.
De Wolf, E. A.
Janssen, X.
Lauwers, J.
Van De Klundert, M.
Van Haevermaet, H.
Van Mechelen, P.
Van Remortel, N.
Van Spilbeeck, A.
Abu Zeid, S.
Blekman, F.
D'Hondt, J.
Daci, N.
De Bruyn, I.
Deroover, K.
[J]. PHYSICS LETTERS B, 2017, 768 : 57 - 80
[26] Khachatryan V, 2017, J HIGH ENERGY PHYS, DOI 10.1007/JHEP03(2017)077
[27] Khachatryan V, 2016, J HIGH ENERGY PHYS, DOI 10.1007/JHEP03(2016)125
[28] Event generator tunes obtained from underlying event and multiparton scattering measurements
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Eroe, J.
Flechl, M.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hartl, C.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Knuenz, V.
Koenig, A.
Krammer, M.
Kraetschmer, I.
Liko, D.
Matsushita, T.
Mikulec, I.
Rabady, D.
Rahbaran, B.
Rohringer, H.
Schieck, J.
Schoefbeck, R.
Strauss, J.
Treberer-Treberspurg, W.
Waltenberger, W.
Wulz, C. -E.
Mossolov, V.
Shumeiko, N.
Gonzalez, J. Suarez
Alderweireldt, S.
Cornelis, T.
De Wolf, E. A.
Janssen, X.
Knutsson, A.
Lauwers, J.
Luyckx, S.
De Klundert, M. Van
Van Haevermaet, H.
Van Mechelen, P.
Van Remortel, N.
Van Spilbeeck, A.
Abu Zeid, S.
[J]. EUROPEAN PHYSICAL JOURNAL C, 2016, 76 (03):
[29] Search for heavy Majorana neutrinos in μ±μ± + jets events inproton-proton collisions at √s=8TeV
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Eroe, J.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hartl, C.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Kiesenhofer, W.
Knuenz, V.
Krammer, M.
Kraetschmer, I.
Liko, D.
Mikulec, I.
Rabady, D.
Rahbaran, B.
Rohringer, H.
Schoefbeck, R.
Strauss, J.
Treberer-Treberspurg, W.
Waltenberger, W.
Wulz, C. -E.
Mossolov, V.
Shumeiko, N.
Gonzalez, J. Suarez
Alderweireldt, S.
Bansal, S.
Cornelis, T.
De Wolf, E. A.
Janssen, X.
Knutsson, A.
Lauwers, J.
Luyckx, S.
Ochesanu, S.
Rougny, R.
Van De Klundert, M.
Van Haevermaet, H.
Van Mechelen, P.
Van Remortel, N.
Van Spilbeeck, A.
Blekman, F.
Blyweert, S.
D'Hondt, J.
Daci, N.
[J]. PHYSICS LETTERS B, 2015, 748 : 144 - 166
[30] Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s=8 TeV
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Eroe, J.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hartl, C.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Kiesenhofer, W.
Knuenz, V.
Krammer, M.
Kraetschmer, I.
Liko, D.
Mikulec, I.
Rabady, D.
Rahbaran, B.
Rohringer, H.
Schoefbeck, R.
Strauss, J.
Treberer-Treberspurg, W.
Waltenberger, W.
Wulz, C. E.
Mossolov, V.
Shumeiko, N.
Gonzalez, J. Suarez
Alderweireldt, S.
Bansal, S.
Cornelis, T.
De Wolf, E. A.
Janssen, X.
Knutsson, A.
Lauwers, J.
Luyckx, S.
Ochesanu, S.
Rougny, R.
Van De Klundert, M.
Van Haevermaet, H.
Van Mechelen, P.
Van Remortel, N.
Van Spilbeeck, A.
Blekman, F.
Blyweert, S.
D'Hondt, J.
Daci, N.
[J]. JOURNAL OF INSTRUMENTATION, 2015, 10

← 1 2 3 4 →