Search for the Z Boson Decay to ττμμ in Proton-Proton Collisions at √s=13 TeV

被引：1

作者：

Hayrapetyan, A. ^{[1
]}

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Andrejkovic, J. W. ^{[2
]}

Benato, L. ^{[2
]}

Bergauer, T. ^{[2
]}

Chatterjee, S. ^{[2
,64
]}

Damanakis, K. ^{[2
]}

Dragicevic, M. ^{[2
]}

Hussain, P. S. ^{[2
]}

Jeitler, M. ^{[2
,209
]}

Krammer, N. ^{[2
]}

Li, A. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Schieck, J. ^{[2
,209
]}

Schoefbeck, R. ^{[2
,209
]}

Schwarz, D. ^{[2
]}

Sonawane, M. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,209
]}

Janssen, T. ^{[3
]}

Van Laer, T. ^{[3
]}

Van Mechelen, P. ^{[3
]}

Breugelmans, N. ^{[4
]}

D'Hondt, J. ^{[4
]}

Dansana, S. ^{[4
]}

De Moor, A. ^{[4
]}

Delcourt, M. ^{[4
]}

Heyen, F. ^{[4
]}

Lowette, S. ^{[4
]}

Makarenko, I. ^{[4
]}

Mueller, D. ^{[4
]}

Tavernier, S. ^{[4
]}

Tytgat, M. ^{[4
,210
]}

Van Onsem, G. P. ^{[4
]}

Van Putte, S. ^{[4
]}

Vannerom, D. ^{[4
]}

Bilin, B. ^{[5
]}

Clerbaux, B. ^{[5
]}

Das, A. K. ^{[5
]}

De Bruyn, I. ^{[5
]}

De Lentdecker, G. ^{[5
]}

Evard, H. ^{[5
]}

Favart, L. ^{[5
]}

Gianneios, P. ^{[5
,55
]}

Jaramillo, J. ^{[5
]}

Khalilzadeh, A. ^{[5
]}

Khan, F. A. ^{[5
]}

Lee, K. ^{[5
,110
]}

机构：

[1] Yerevan Phys Inst, Yerevan, Armenia

[2] Inst Hochenergiephys, Vienna, Austria

[3] Univ Antwerp, Antwerp, Belgium

[4] Vrije Univ Brussel, Brussels, Belgium

[5] Univ Libre Bruxelles, Brussels, Belgium

[6] Univ Ghent, Ghent, Belgium

[7] Catholic Univ Louvain, Louvain La Neuve, Belgium

[8] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[9] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[10] Univ Fed ABC, Univ Estadual Paulista, Sao Paulo, Brazil

[11] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[12] Univ Sofia, Sofia, Bulgaria

[13] Univ Tarapaca, Inst Alta Invest, Casilla 7 D, Arica, Chile

[14] Beihang Univ, Beijing, Peoples R China

[15] Tsinghua Univ, Dept Phys, 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] South China Normal Univ, Guangdong Prov Key Lab Nucl Sci, Guangzhou, Peoples R China

[19] South China Normal Univ, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou, Peoples R China

[20] Sun Yat Sen Univ, Guangzhou, Peoples R China

[21] Univ Sci & Technol China, Hefei, Peoples R China

[22] Nanjing Normal Univ, Nanjing, Peoples R China

[23] Fudan Univ, Inst Modern Phys, Shanghai, Peoples R China

[24] Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai, Peoples R China

[25] Zhejiang Univ, Hangzhou, Zhejiang, Peoples R China

[26] Univ Los Andes, Bogota, Colombia

[27] Univ Antioquia, Medellin, Colombia

[28] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[29] Univ Split, Fac Sci, Split, Croatia

[30] Inst Rudjer Boskovic, Zagreb, Croatia

[31] Univ Cyprus, Nicosia, Cyprus

[32] Charles Univ Prague, Prague, Czech Republic

[33] Univ San Francisco Quito, Quito, Ecuador

[34] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, Cairo, Egypt

[35] Fayoum Univ, Ctr High Energy Phys CHEP FU, Al Fayyum, Egypt

[36] NICPB, Tallinn, Estonia

[37] Univ Helsinki, Dept Phys, Helsinki, Finland

[38] Helsinki Inst Phys, Helsinki, Finland

[39] Lappeenranta Lahti Univ Technol, Lappeenranta, Finland

[40] Univ Paris Saclay, CEA, IRFU, Gif Sur Yvette, France

[41] Ecole Polytech, Inst Polytech Paris, CNRS, Lab Leprince Ringuet,IN2P3, Palaiseau, France

[42] Univ Strasbourg, CNRS, IPHC, UMR 7178, Strasbourg, France

[43] CNRS, IN2P3, Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, Villeurbanne, France

[44] Inst Phys 2 Infinis Lyon IP2I, Villeurbanne, France

[45] Georgian Tech Univ, Tbilisi, Georgia

[46] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[47] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[48] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[49] DESY, Hamburg, Germany

[50] Univ Hamburg, Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 16期

基金：

巴西圣保罗研究基金会; 芬兰科学院;

关键词：

PAIR;

D O I：

10.1103/PhysRevLett.133.161805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first search for the Z boson decay to tau tau mu mu at the CERN LHC is presented, based on data collected by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb(-1). The data are compatible with the predicted background. For the first time, an upper limit at the 95% confidence level of 6.9 times the standard model expectation is placed on the ratio of the Z -> tau tau mu mu to Z -> 4 mu branching fractions. Limits are also placed on the six flavor-conserving four-lepton effective-field-theory operators involving two muons and two tau leptons, for the first time testing all such operators.

引用

页数：20

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Fruhwirth, R.
Jeitler, M.
Krammer, N.
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Damanakis, K.
Dragicevic, M.
Del Valle, A. Escalante
Jeitler, M.
Krammer, N.
Lechner, L.
Liko, D.
Mikulec, I.
Paulitsch, P.
Pitters, F. M.
Schieck, J.
Schoefbeck, R.
Schwarz, D.
Templ, S.
Waltenberger, W.
Wulz, C. -E.
Darwish, M. R.
De Wolf, E. A.
Janssen, T.
Kello, T.
Lelek, A.
Sfar, H. Rejeb
Van Mechelen, P.
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Bols, E. S.
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De Moor, A.
Delcourt, M.
El Faham, H.
Lowette, S.
Moortgat, S.
Morton, A.
Mueller, D.
Sahasransu, A. R.
Tavernier, S.
Van Doninck, W.
Vannerom, D.
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Adam, W.
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Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Del Valle, A. Escalante
Fruhwirth, R.
Jeitler, M.
Krammer, N.
Lechner, L.
Liko, D.
Mikulec, I
Paulitsch, P.
Pitters, F. M.
Schieck, J.
Schofbeck, R.
Schwarz, D.
Templ, S.
Waltenberger, W.
Wulz, C-E
Chekhovsky, V
Litomin, A.
Makarenko, V
Darwish, M. R.
De Wolf, E. A.
Janssen, T.
Kello, T.
Lelek, A.
Sfar, H. Rejeb
Van Mechelen, P.
Van Putte, S.
Van Remortel, N.
Bols, E. S.
D'Hondt, J.
De Moor, A.
Delcourt, M.
El Faham, H.
Lowette, S.
Moortgat, S.
Morton, A.
Muller, D.
Sahasransu, A. R.
Tavernier, S.
Van Doninck, W.
Vannerom, D.
Beghin, D.
Bilin, B.
Clerbaux, B.
PHYSICAL REVIEW D, 2022, 105 (09)

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